Switch to python3 style 'except X as Y' notation

Which also works with python2.7

56 files changed, 217 insertions, 217 deletions

diff --git a/tests/clitest.py b/tests/clitest.py
index 5824a9c2..1277a13a 100644
--- a/tests/clitest.py
+++ b/tests/clitest.py
@@ -162,7 +162,7 @@ class Command(object):
                     ret = virtconvert.main(conn=conn)
                 elif app.count("virt-xml"):
                     ret = virtxml.main(conn=conn)
-            except SystemExit, sys_e:
+            except SystemExit as sys_e:
                 ret = sys_e.code
             except Exception:
                 ret = -1
@@ -193,7 +193,7 @@ class Command(object):
 
             logging.debug(output + "\n")
             return code, output
-        except Exception, e:
+        except Exception as e:
             return (-1, "".join(traceback.format_exc()) + str(e))
 
     def _check_support(self, tests, conn, check, skipmsg):
@@ -264,7 +264,7 @@ class Command(object):
 
                 utils.diff_compare(output, filename)
 
-        except AssertionError, e:
+        except AssertionError as e:
             err = self.cmdstr + "\n" + str(e)
 
         if err:
diff --git a/tests/clonetest.py b/tests/clonetest.py
index b9f0dd4a..f22b7f80 100644
--- a/tests/clonetest.py
+++ b/tests/clonetest.py
@@ -134,7 +134,7 @@ class TestClone(unittest.TestCase):
                 # We shouldn't succeed, so test fails
                 raise AssertionError("Remote clone with storage passed "
                                      "when it shouldn't.")
-            except (ValueError, RuntimeError), e:
+            except (ValueError, RuntimeError) as e:
                 # Exception expected
                 logging.debug("Received expected exception: %s", str(e))
 
diff --git a/tests/test_inject.py b/tests/test_inject.py
index 370584fd..d263ce39 100755
--- a/tests/test_inject.py
+++ b/tests/test_inject.py
@@ -90,7 +90,7 @@ def _fetch_distro(distro):
         cleanup.append(initrd)
         distro.kernel = kernel
         distro.initrd = initrd
-    except Exception, e:
+    except Exception as e:
         print "fetching distro=%s failed: %s" % (distro.name, e)
     finally:
         fetcher.cleanupLocation()
diff --git a/tests/test_urls.py b/tests/test_urls.py
index bf59df2c..11f855a7 100644
--- a/tests/test_urls.py
+++ b/tests/test_urls.py
@@ -200,7 +200,7 @@ def _storeForDistro(fetcher, guest):
     for ignore in range(0, 10):
         try:
             return urlfetcher.getDistroStore(guest, fetcher)
-        except Exception, e:
+        except Exception as e:
             if str(e).count("502"):
                 logging.debug("Caught proxy error: %s", str(e))
                 time.sleep(.5)
diff --git a/tests/uitests/utils.py b/tests/uitests/utils.py
index 2f8a95cb..394f5eca 100644
--- a/tests/uitests/utils.py
+++ b/tests/uitests/utils.py
@@ -41,7 +41,7 @@ class _FuzzyPredicate(dogtail.predicate.Predicate):
                 if not self._labeller_pattern.match(node.labeller.text):
                     return
             return True
-        except Exception, e:
+        except Exception as e:
             print "got predicate exception: %s" % e
 
 
@@ -159,7 +159,7 @@ def print_nodes(root):
     def _walk(node):
         try:
             print node_string(node)
-        except Exception, e:
+        except Exception as e:
             print "got exception: %s" % e
 
     root.findChildren(_walk, isLambda=True)
@@ -173,7 +173,7 @@ def focused_nodes(root):
         try:
             if node.focused:
                 return node
-        except Exception, e:
+        except Exception as e:
             print "got exception: %s" % e
 
     return root.findChildren(_walk, isLambda=True)
diff --git a/tests/utils.py b/tests/utils.py
index bab9612e..df044970 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -146,7 +146,7 @@ def test_create(testconn, xml, define_func="defineXML"):
     try:
         func = getattr(testconn, define_func)
         obj = func(xml)
-    except Exception, e:
+    except Exception as e:
         raise RuntimeError(str(e) + "\n" + xml)
 
     try:
diff --git a/virt-clone b/virt-clone
index 572977a9..12f0d062 100755
--- a/virt-clone
+++ b/virt-clone
@@ -52,7 +52,7 @@ def get_original_guest(guest_name, origfile, design):
         try:
             design.original_xml = origxml
             return
-        except (ValueError, RuntimeError), e:
+        except (ValueError, RuntimeError) as e:
             fail(e)
 
     if not guest_name:
@@ -219,9 +219,9 @@ def main(conn=None):
 if __name__ == "__main__":
     try:
         sys.exit(main())
-    except SystemExit, sys_e:
+    except SystemExit as sys_e:
         sys.exit(sys_e.code)
     except KeyboardInterrupt:
         print_stderr(_("Installation aborted at user request"))
-    except Exception, main_e:
+    except Exception as main_e:
         fail(main_e)
diff --git a/virt-convert b/virt-convert
index dd964f51..9a44d5f5 100755
--- a/virt-convert
+++ b/virt-convert
@@ -133,9 +133,9 @@ def main(conn=None):
 if __name__ == "__main__":
     try:
         sys.exit(main())
-    except SystemExit, sys_e:
+    except SystemExit as sys_e:
         sys.exit(sys_e.code)
     except KeyboardInterrupt:
         print_stderr(_("Aborted at user request"))
-    except Exception, main_e:
+    except Exception as main_e:
         fail(main_e)
diff --git a/virt-install b/virt-install
index f1da1000..4c2358c2 100755
--- a/virt-install
+++ b/virt-install
@@ -367,7 +367,7 @@ def get_guest(conn, options):
             arch=arch,
             typ=req_hv_type,
             machine=options.machine)
-    except Exception, e:
+    except Exception as e:
         fail(e)
 
     if (not req_virt_type and
@@ -400,7 +400,7 @@ def set_install_media(guest, location, cdpath, distro_variant):
             guest.os_variant = guest.installer.detect_distro(guest)
         elif distro_variant != "none":
             guest.os_variant = distro_variant
-    except ValueError, e:
+    except ValueError as e:
         fail(_("Error validating install location: %s") % str(e))
 
 
@@ -627,7 +627,7 @@ def build_guest_instance(conn, options):
         guest.os.nvram is None):
         try:
             guest.set_uefi_default()
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error setting UEFI default for aarch64",
                 exc_info=True)
             logging.warn("Couldn't configure UEFI: %s", e)
@@ -713,7 +713,7 @@ def start_install(guest, options):
         logging.debug("", exc_info=True)
         print_stderr(_("Domain install interrupted."))
         raise
-    except Exception, e:
+    except Exception as e:
         fail(e, do_exit=False)
         if guest.domain is None:
             guest.cleanup_created_disks(meter)
@@ -736,7 +736,7 @@ def check_domain(guest, conscb, transient,
                 fail(_("Domain has crashed."))
 
             return not guest.domain.isActive()
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             if transient and e.get_error_code() == libvirt.VIR_ERR_NO_DOMAIN:
                 logging.debug("transient VM shutdown and disappeared.")
                 return True
@@ -995,10 +995,10 @@ def main(conn=None):
 if __name__ == "__main__":
     try:
         sys.exit(main())
-    except SystemExit, sys_e:
+    except SystemExit as sys_e:
         sys.exit(sys_e.code)
     except KeyboardInterrupt:
         logging.debug("", exc_info=True)
         print_stderr(_("Installation aborted at user request"))
-    except Exception, main_e:
+    except Exception as main_e:
         fail(main_e)
diff --git a/virt-manager b/virt-manager
index b3a8f691..cf535714 100755
--- a/virt-manager
+++ b/virt-manager
@@ -85,7 +85,7 @@ def _import_gtk(leftovers):
         globals()["Gtk"] = Gtk
         import virtManager.config
         ignore = virtManager.config
-    except Exception, e:
+    except Exception as e:
         # Don't just let the exception raise here. abrt reports bugs
         # when users mess up su/sudo and DISPLAY isn't set. Printing
         # it avoids the issue
@@ -282,7 +282,7 @@ if __name__ == "__main__":
         logging.debug("Received KeyboardInterrupt. Exiting application.")
     except SystemExit:
         raise
-    except Exception, run_e:
+    except Exception as run_e:
         if "Gtk" not in globals():
             raise
         _show_startup_error(str(run_e), "".join(traceback.format_exc()))
diff --git a/virt-xml b/virt-xml
index cfe37965..4c6ade4e 100755
--- a/virt-xml
+++ b/virt-xml
@@ -94,7 +94,7 @@ def get_domain_and_guest(conn, domstr):
             domain = conn.lookupByUUIDString(domstr)
         else:
             domain = conn.lookupByName(domstr)
-    except libvirt.libvirtError, e:
+    except libvirt.libvirtError as e:
         fail(_("Could not find domain '%s': %s") % (domstr, e))
 
     state = domain.info()[0]
@@ -295,7 +295,7 @@ def update_changes(domain, devs, action, confirm):
                 domain.detachDeviceFlags(xml, libvirt.VIR_DOMAIN_AFFECT_LIVE)
             elif action == "update":
                 domain.updateDeviceFlags(xml, libvirt.VIR_DOMAIN_AFFECT_LIVE)
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             fail(_("Error attempting device %s: %s") % (action, e))
 
         print_stdout(_("Device %s successful.") % action)
@@ -476,10 +476,10 @@ def main(conn=None):
 if __name__ == "__main__":
     try:
         sys.exit(main())
-    except SystemExit, sys_e:
+    except SystemExit as sys_e:
         sys.exit(sys_e.code)
     except KeyboardInterrupt:
         logging.debug("", exc_info=True)
         print_stderr(_("Aborted at user request"))
-    except Exception, main_e:
+    except Exception as main_e:
         fail(main_e)
diff --git a/virtManager/addhardware.py b/virtManager/addhardware.py
index 345e388c..3857c259 100644
--- a/virtManager/addhardware.py
+++ b/virtManager/addhardware.py
@@ -779,7 +779,7 @@ class vmmAddHardware(vmmGObjectUI):
             else:
                 # Guest XML editing
                 define_func(**define_args)
-        except Exception, e:
+        except Exception as e:
             err.show_err((_("Error changing VM configuration: %s") %
                               str(e)))
             return False
@@ -797,7 +797,7 @@ class vmmAddHardware(vmmGObjectUI):
             elif hotplug_args:
                 did_hotplug = True
                 vm.hotplug(**hotplug_args)
-        except Exception, e:
+        except Exception as e:
             did_hotplug = True
             logging.debug("Hotplug failed: %s", str(e))
             hotplug_err = ((str(e), "".join(traceback.format_exc())))
@@ -1311,7 +1311,7 @@ class vmmAddHardware(vmmGObjectUI):
             if controller is not None:
                 self.vm.attach_device(controller)
             self.vm.attach_device(self._dev)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Device could not be hotplugged: %s", str(e))
             attach_err = (str(e), "".join(traceback.format_exc()))
 
@@ -1335,7 +1335,7 @@ class vmmAddHardware(vmmGObjectUI):
             if controller is not None:
                 self.vm.add_device(controller)
             self.vm.add_device(self._dev)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error adding device: %s") % str(e))
             return True
 
@@ -1346,7 +1346,7 @@ class vmmAddHardware(vmmGObjectUI):
         if not error:
             try:
                 failure = self._add_device()
-            except Exception, e:
+            except Exception as e:
                 failure = True
                 error = _("Unable to add device: %s") % str(e)
                 details = "".join(traceback.format_exc())
@@ -1364,7 +1364,7 @@ class vmmAddHardware(vmmGObjectUI):
         try:
             if self._validate() is False:
                 return
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Uncaught error validating hardware "
                                 "input: %s") % str(e))
             return
@@ -1485,7 +1485,7 @@ class vmmAddHardware(vmmGObjectUI):
         try:
             disk = self.addstorage.validate_storage(self.vm.get_name(),
                 collidelist=collidelist, device=device)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Storage parameter error."), e)
 
         if disk is False:
@@ -1508,7 +1508,7 @@ class vmmAddHardware(vmmGObjectUI):
                 disk, controller_model, disks)
 
             disk.generate_target(used, prefer_ctrl)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Storage parameter error."), e)
 
         if self.addstorage.validate_disk_object(disk) is False:
@@ -1568,7 +1568,7 @@ class vmmAddHardware(vmmGObjectUI):
                 raise ValueError(_("invalid listen type"))
             if keymap:
                 self._dev.keymap = keymap
-        except ValueError, e:
+        except ValueError as e:
             self.err.val_err(_("Graphics device parameter error"), e)
 
     def _validate_page_sound(self):
@@ -1577,7 +1577,7 @@ class vmmAddHardware(vmmGObjectUI):
         try:
             self._dev = virtinst.VirtualAudio(self.conn.get_backend())
             self._dev.model = smodel
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Sound device parameter error"), e)
 
     def _validate_page_hostdev(self):
@@ -1603,7 +1603,7 @@ class vmmAddHardware(vmmGObjectUI):
                     return False
             dev.set_from_nodedev(nodedev)
             self._dev = dev
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Host device parameter error"), e)
 
     def _validate_page_char(self):
@@ -1668,7 +1668,7 @@ class vmmAddHardware(vmmGObjectUI):
 
             # Dump XML for sanity checking
             self._dev.get_xml_config()
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(
                     _("%s device parameter error") %
                     char_class.virtual_device_type.capitalize(), e)
@@ -1680,7 +1680,7 @@ class vmmAddHardware(vmmGObjectUI):
         try:
             self._dev = VirtualVideoDevice(conn)
             self._dev.model = model
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Video device parameter error"), e)
 
     def _validate_page_watchdog(self):
@@ -1692,7 +1692,7 @@ class vmmAddHardware(vmmGObjectUI):
             self._dev = VirtualWatchdog(conn)
             self._dev.model = model
             self._dev.action = action
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Watchdog parameter error"), e)
 
     def _validate_page_filesystem(self):
@@ -1707,7 +1707,7 @@ class vmmAddHardware(vmmGObjectUI):
         try:
             self._dev = VirtualSmartCardDevice(conn)
             self._dev.mode = mode
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Smartcard device parameter error"), e)
 
     def _validate_page_usbredir(self):
@@ -1726,7 +1726,7 @@ class vmmAddHardware(vmmGObjectUI):
                 self._dev.host = host
             if service:
                 self._dev.service = service
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("USB redirected device parameter error"),
                                     str(e))
 
@@ -1746,7 +1746,7 @@ class vmmAddHardware(vmmGObjectUI):
             for param_name, val in value_mappings.items():
                 if self._dev.supports_property(param_name):
                     setattr(self._dev, param_name, val)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("TPM device parameter error"), e)
 
     def _validate_page_panic(self):
@@ -1764,7 +1764,7 @@ class vmmAddHardware(vmmGObjectUI):
                 iobase = self._dev.IOBASE_DEFAULT
             for param_name, val in value_mappings.items():
                 setattr(self._dev, param_name, val)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Panic device parameter error"), e)
 
     def _validate_page_controller(self):
@@ -1857,7 +1857,7 @@ class vmmAddHardware(vmmGObjectUI):
             for param_name, val in value_mappings.items():
                 if self._dev.supports_property(param_name):
                     setattr(self._dev, param_name, val)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("RNG device parameter error"), e)
 
 
diff --git a/virtManager/addstorage.py b/virtManager/addstorage.py
index 8c58344e..1f827ddc 100644
--- a/virtManager/addstorage.py
+++ b/virtManager/addstorage.py
@@ -117,7 +117,7 @@ class vmmAddStorage(vmmGObjectUI):
             try:
                 default_pool.start()
                 logging.info("Started pool '%s'", default_pool.get_name())
-            except Exception, e:
+            except Exception as e:
                 return self.err.show_err(_("Could not start storage_pool "
                                       "'%s': %s") %
                                     (default_pool.get_name(), str(e)))
diff --git a/virtManager/asyncjob.py b/virtManager/asyncjob.py
index cbc872c4..53862968 100644
--- a/virtManager/asyncjob.py
+++ b/virtManager/asyncjob.py
@@ -86,7 +86,7 @@ class vmmMeter(virtinst.progress.BaseMeter):
 def cb_wrapper(callback, asyncjob, *args, **kwargs):
     try:
         callback(asyncjob, *args, **kwargs)
-    except Exception, e:
+    except Exception as e:
         # If job is cancelled, don't report error to user.
         if (isinstance(e, libvirt.libvirtError) and
             asyncjob.can_cancel() and
diff --git a/virtManager/choosecd.py b/virtManager/choosecd.py
index d952492e..32542c35 100644
--- a/virtManager/choosecd.py
+++ b/virtManager/choosecd.py
@@ -116,7 +116,7 @@ class vmmChooseCD(vmmGObjectUI):
 
         try:
             self.disk.path = path
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Invalid Media Path"), e)
 
         names = self.disk.is_conflict_disk()
diff --git a/virtManager/clone.py b/virtManager/clone.py
index 813edf29..4728d326 100644
--- a/virtManager/clone.py
+++ b/virtManager/clone.py
@@ -405,7 +405,7 @@ class vmmCloneVM(vmmGObjectUI):
             try:
                 cd.skip_target = skip_targets
                 cd.setup_original()
-            except Exception, e:
+            except Exception as e:
                 logging.exception("Disk target '%s' caused clone error",
                                   force_target)
                 storage_add(str(e))
@@ -432,7 +432,7 @@ class vmmCloneVM(vmmGObjectUI):
 
                 cd.clone_paths = clone_path
                 size = cd.original_disks[0].get_size()
-            except Exception, e:
+            except Exception as e:
                 logging.exception("Error setting generated path '%s'",
                                   clone_path)
                 storage_add(str(e))
@@ -469,7 +469,7 @@ class vmmCloneVM(vmmGObjectUI):
             try:
                 newpath = self.generate_clone_path_name(origpath, newname)
                 row[STORAGE_INFO_NEW_PATH] = newpath
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Generating new path from clone name failed: " +
                               str(e))
 
@@ -592,7 +592,7 @@ class vmmCloneVM(vmmGObjectUI):
         self.clone_design.skip_target = skip_targets
         try:
             self.clone_design.clone_paths = new_disks
-        except Exception, e:
+        except Exception as e:
             # Just log the error and go on. The UI will fail later if needed
             logging.debug("Error setting clone_paths: %s", str(e))
 
@@ -695,7 +695,7 @@ class vmmCloneVM(vmmGObjectUI):
             if msg:
                 raise RuntimeError(msg)
             row[NETWORK_INFO_NEW_MAC] = new
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error changing MAC address: %s") % str(e))
             return
 
@@ -735,7 +735,7 @@ class vmmCloneVM(vmmGObjectUI):
             row[STORAGE_INFO_NEW_PATH] = new_path
             row[STORAGE_INFO_MANUAL_PATH] = True
             self.populate_storage_lists()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error changing storage path: %s") % str(e))
             return
 
@@ -818,7 +818,7 @@ class vmmCloneVM(vmmGObjectUI):
         try:
             if not self.validate():
                 return
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Uncaught error validating input: %s") % str(e))
             return
 
diff --git a/virtManager/connect.py b/virtManager/connect.py
index 4cec8cab..c58ba98a 100644
--- a/virtManager/connect.py
+++ b/virtManager/connect.py
@@ -99,7 +99,7 @@ class vmmConnect(vmmGObjectUI):
             # Call any API, so we detect if avahi is even available or not
             self.avahiserver.GetAPIVersion()
             logging.debug("Connected to avahi")
-        except Exception, e:
+        except Exception as e:
             self.dbus = None
             self.avahiserver = None
             logging.debug("Couldn't contact avahi: %s", str(e))
@@ -232,7 +232,7 @@ class vmmConnect(vmmGObjectUI):
 
             sig = resint.connect("g-signal", cb)
             self.browser_sigs.append((resint, sig))
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
 
     def remove_service(self, interface, protocol, name, typ, domain, flags):
@@ -248,7 +248,7 @@ class vmmConnect(vmmGObjectUI):
             for row in model:
                 if row[0] == name:
                     model.remove(row.iter)
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
 
     def add_conn_to_list(self, interface, protocol, name, typ, domain,
@@ -271,7 +271,7 @@ class vmmConnect(vmmGObjectUI):
 
             host = self.sanitize_hostname(str(host))
             model.append([str(address), str(host), str(name)])
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
 
     def start_browse(self):
diff --git a/virtManager/connectauth.py b/virtManager/connectauth.py
index 014a986e..3d8fd3c5 100644
--- a/virtManager/connectauth.py
+++ b/virtManager/connectauth.py
@@ -161,7 +161,7 @@ def acquire_tgt():
                                 "/org/gnome/KrbAuthDialog",
                                 "org.freedesktop.KrbAuthDialog", None)
         ret = ka.acquireTgt("(s)", "")
-    except Exception, e:
+    except Exception as e:
         logging.info("Cannot acquire tgt" + str(e))
         ret = False
     return ret
diff --git a/virtManager/connection.py b/virtManager/connection.py
index 96c6a7bf..6f595b26 100644
--- a/virtManager/connection.py
+++ b/virtManager/connection.py
@@ -281,7 +281,7 @@ class vmmConnection(vmmGObject):
                 for vol in pool.get_volumes():
                     try:
                         ret.append(vol.get_xmlobj(refresh_if_nec=False))
-                    except Exception, e:
+                    except Exception as e:
                         logging.debug("Fetching volume XML failed: %s", e)
             return ret
         self._backend.cb_fetch_all_vols = fetch_all_vols
@@ -550,7 +550,7 @@ class vmmConnection(vmmGObject):
                 try:
                     if vol.get_target_path() == path:
                         return vol
-                except Exception, e:
+                except Exception as e:
                     # Errors can happen if the volume disappeared, bug 1092739
                     logging.debug("Error looking up volume from path=%s: %s",
                         path, e)
@@ -625,7 +625,7 @@ class vmmConnection(vmmGObject):
         for dev in self.list_nodedevs():
             try:
                 xmlobj = dev.get_xmlobj()
-            except libvirt.libvirtError, e:
+            except libvirt.libvirtError as e:
                 # Libvirt nodedev XML fetching can be busted
                 # https://bugzilla.redhat.com/show_bug.cgi?id=1225771
                 if e.get_error_code() != libvirt.VIR_ERR_NO_NODE_DEVICE:
@@ -700,12 +700,12 @@ class vmmConnection(vmmGObject):
         try:
             # Redefine new domain
             newobj = define_cb(newxml)
-        except Exception, renameerr:
+        except Exception as renameerr:
             try:
                 logging.debug("Error defining new name %s XML",
                     obj.class_name(), exc_info=True)
                 newobj = define_cb(origxml)
-            except Exception, fixerr:
+            except Exception as fixerr:
                 logging.debug("Failed to redefine original %s!",
                     obj.class_name(), exc_info=True)
                 raise RuntimeError(
@@ -840,7 +840,7 @@ class vmmConnection(vmmGObject):
                 self._domain_lifecycle_event, None))
             self.using_domain_events = True
             logging.debug("Using domain events")
-        except Exception, e:
+        except Exception as e:
             self.using_domain_events = False
             logging.debug("Error registering domain events: %s", e)
 
@@ -851,7 +851,7 @@ class vmmConnection(vmmGObject):
                 self._domain_cb_ids.append(
                     self.get_backend().domainEventRegisterAny(
                     None, eventid, self._domain_xml_misc_event, None))
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Error registering domain %s event: %s",
                     typestr, e)
 
@@ -877,7 +877,7 @@ class vmmConnection(vmmGObject):
                 None, eventid, self._network_lifecycle_event, None))
             self.using_network_events = True
             logging.debug("Using network events")
-        except Exception, e:
+        except Exception as e:
             self.using_network_events = False
             logging.debug("Error registering network events: %s", e)
 
@@ -897,7 +897,7 @@ class vmmConnection(vmmGObject):
                 None, refreshid, self._storage_pool_refresh_event, None))
             self.using_storage_pool_events = True
             logging.debug("Using storage pool events")
-        except Exception, e:
+        except Exception as e:
             self.using_storage_pool_events = False
             logging.debug("Error registering storage pool events: %s", e)
 
@@ -916,7 +916,7 @@ class vmmConnection(vmmGObject):
 
             self.using_node_device_events = True
             logging.debug("Using node device events")
-        except Exception, e:
+        except Exception as e:
             self.using_network_events = False
             logging.debug("Error registering node device events: %s", e)
 
@@ -1000,7 +1000,7 @@ class vmmConnection(vmmGObject):
         try:
             self._backend.open(self._do_creds_password)
             return True, None
-        except Exception, exc:
+        except Exception as exc:
             tb = "".join(traceback.format_exc())
             if isinstance(exc, libvirt.libvirtError):
                 # pylint: disable=no-member
@@ -1043,7 +1043,7 @@ class vmmConnection(vmmGObject):
         # We want this before events setup to save some needless polling
         try:
             virtinst.StoragePool.build_default_pool(self.get_backend())
-        except Exception, e:
+        except Exception as e:
             logging.debug("Building default pool failed: %s", str(e))
 
         self._add_conn_events()
@@ -1053,7 +1053,7 @@ class vmmConnection(vmmGObject):
 
         try:
             self._backend.setKeepAlive(20, 1)
-        except Exception, e:
+        except Exception as e:
             if (type(e) is not AttributeError and
                 not util.is_error_nosupport(e)):
                 raise
@@ -1085,7 +1085,7 @@ class vmmConnection(vmmGObject):
 
             self.idle_add(self._change_state, is_active and
                 self._STATE_ACTIVE or self._STATE_DISCONNECTED)
-        except Exception, e:
+        except Exception as e:
             is_active = False
             self._schedule_close()
             connectError = (str(e), "".join(traceback.format_exc()), False)
@@ -1311,7 +1311,7 @@ class vmmConnection(vmmGObject):
                     continue
 
                 obj.tick(stats_update=stats_update)
-            except Exception, e:
+            except Exception as e:
                 logging.exception("Tick for %s failed", obj)
                 if (isinstance(e, libvirt.libvirtError) and
                     (getattr(e, "get_error_code")() ==
@@ -1400,7 +1400,7 @@ class vmmConnection(vmmGObject):
             self._tick(*args, **kwargs)
         except KeyboardInterrupt:
             raise
-        except Exception, e:
+        except Exception as e:
             pass
 
         if e is None:
diff --git a/virtManager/console.py b/virtManager/console.py
index 9bb0295a..448cc8ca 100644
--- a/virtManager/console.py
+++ b/virtManager/console.py
@@ -690,7 +690,7 @@ class vmmConsolePages(vmmGObjectUI):
             gdev = gdevs and gdevs[0] or None
             if gdev:
                 ginfo = ConnectionInfo(self.vm.conn, gdev)
-        except Exception, e:
+        except Exception as e:
             # We can fail here if VM is destroyed: xen is a bit racy
             # and can't handle domain lookups that soon after
             logging.exception("Getting graphics console failed: %s", str(e))
@@ -733,7 +733,7 @@ class vmmConsolePages(vmmGObjectUI):
             self._refresh_enable_accel()
 
             self._viewer.console_open()
-        except Exception, e:
+        except Exception as e:
             logging.exception("Error connection to graphical console")
             self._activate_unavailable_page(
                     _("Error connecting to graphical console") + ":\n%s" % e)
diff --git a/virtManager/create.py b/virtManager/create.py
index 3607b9da..90d1f787 100644
--- a/virtManager/create.py
+++ b/virtManager/create.py
@@ -467,7 +467,7 @@ class vmmCreate(vmmGObjectUI):
                 guest.set_uefi_default()
                 installable_arch = True
                 logging.debug("UEFI found for aarch64, setting it as default.")
-            except Exception, e:
+            except Exception as e:
                 installable_arch = False
                 logging.debug("Error checking for aarch64 UEFI default",
                     exc_info=True)
@@ -700,7 +700,7 @@ class vmmCreate(vmmGObjectUI):
 
         try:
             self._populate_conn_state()
-        except Exception, e:
+        except Exception as e:
             logging.exception("Error setting create wizard conn state.")
             return self._show_startup_error(str(e))
 
@@ -1733,7 +1733,7 @@ class vmmCreate(vmmGObjectUI):
         elif pagenum == PAGE_FINISH:
             try:
                 self._populate_summary()
-            except Exception, e:
+            except Exception as e:
                 self.err.show_err(_("Error populating summary page: %s") %
                     str(e))
                 return
@@ -1767,7 +1767,7 @@ class vmmCreate(vmmGObjectUI):
         # Generate UUID (makes customize dialog happy)
         try:
             guest.uuid = util.randomUUID(guest.conn)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error setting UUID: %s") % str(e))
             return None
 
@@ -1775,7 +1775,7 @@ class vmmCreate(vmmGObjectUI):
         try:
             if variant:
                 guest.os_variant = variant
-        except ValueError, e:
+        except ValueError as e:
             self.err.val_err(_("Error setting OS information."), str(e))
             return None
 
@@ -1797,7 +1797,7 @@ class vmmCreate(vmmGObjectUI):
                 for_cpu=True)
 
             guest.add_default_devices()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error setting up default devices:") + str(e))
             return None
 
@@ -1815,7 +1815,7 @@ class vmmCreate(vmmGObjectUI):
                 return self._validate_storage_page()
             elif pagenum == PAGE_FINISH:
                 return self._validate_final_page()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Uncaught error validating install "
                                 "parameters: %s") % str(e))
             return
@@ -1935,7 +1935,7 @@ class vmmCreate(vmmGObjectUI):
             if not self._guest:
                 return False
             self._guest.installer = installer
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(
                         _("Error setting installer parameters."), e)
 
@@ -1965,7 +1965,7 @@ class vmmCreate(vmmGObjectUI):
                 fsdev.source = template
                 self._guest.add_device(fsdev)
 
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(
                                 _("Error setting install media location."), e)
 
@@ -1998,7 +1998,7 @@ class vmmCreate(vmmGObjectUI):
             name = self._generate_default_name(distro, variant)
             self.widget("create-vm-name").set_text(name)
             self._guest.name = name
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Error setting default name."), e)
 
         # Kind of wonky, run storage validation now, which will assign
@@ -2053,14 +2053,14 @@ class vmmCreate(vmmGObjectUI):
         # VCPUS
         try:
             self._guest.vcpus = int(cpus)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Error setting CPUs."), e)
 
         # Memory
         try:
             self._guest.memory = int(mem) * 1024
             self._guest.maxmemory = int(mem) * 1024
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Error setting guest memory."), e)
 
         return True
@@ -2101,7 +2101,7 @@ class vmmCreate(vmmGObjectUI):
             if storage_enabled:
                 disk = self._addstorage.validate_storage(self._guest.name,
                     path=path)
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Storage parameter error."), e)
 
         if disk is False:
@@ -2132,7 +2132,7 @@ class vmmCreate(vmmGObjectUI):
         if name != self._guest.name:
             try:
                 self._guest.name = name
-            except Exception, e:
+            except Exception as e:
                 return self.err.val_err(_("Invalid guest name"), str(e))
             if self._is_default_storage():
                 logging.debug("User changed VM name and using default "
@@ -2318,7 +2318,7 @@ class vmmCreate(vmmGObjectUI):
         logging.debug("User requested 'customize', launching dialog")
         try:
             self._show_customize_dialog(guest)
-        except Exception, e:
+        except Exception as e:
             self.reset_finish_cursor()
             self.err.show_err(_("Error starting installation: ") + str(e))
             return
@@ -2471,7 +2471,7 @@ class vmmCreate(vmmGObjectUI):
         try:
             logging.debug("Install should be completed, starting VM.")
             vm.startup()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error continue install: %s") % str(e))
 
         return True
diff --git a/virtManager/createinterface.py b/virtManager/createinterface.py
index 5c935885..f32a7d78 100644
--- a/virtManager/createinterface.py
+++ b/virtManager/createinterface.py
@@ -549,7 +549,7 @@ class vmmCreateInterface(vmmGObjectUI):
                 key = Interface(self.conn.get_backend())
                 key.type = Interface.INTERFACE_TYPE_ETHERNET
                 key.name = name
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Error creating stub interface '%s': %s",
                     name, e)
                 continue
@@ -907,7 +907,7 @@ class vmmCreateInterface(vmmGObjectUI):
             elif pagenum == PAGE_DETAILS:
                 return self.validate_details_page()
 
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Uncaught error validating install "
                                 "parameters: %s") % str(e))
             return
@@ -1011,7 +1011,7 @@ class vmmCreateInterface(vmmGObjectUI):
             iobj.validate()
 
             self.interface = iobj
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(
                             _("Error setting interface parameters."), e)
 
@@ -1078,7 +1078,7 @@ class vmmCreateInterface(vmmGObjectUI):
     def validate_ip_info(self):
         try:
             self.build_ip_info()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error validating IP configuration: %s") %
                               str(e))
             return False
diff --git a/virtManager/createnet.py b/virtManager/createnet.py
index b8317bee..585e45a8 100644
--- a/virtManager/createnet.py
+++ b/virtManager/createnet.py
@@ -301,7 +301,7 @@ class vmmCreateNetwork(vmmGObjectUI):
         try:
             net = self._build_xmlstub()
             net.name = self.widget("net-name").get_text()
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Invalid network name"), str(e))
 
         return True
@@ -823,7 +823,7 @@ class vmmCreateNetwork(vmmGObjectUI):
 
         try:
             net = self._build_xmlobj()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error generating network xml: %s") % str(e))
             return
 
diff --git a/virtManager/createpool.py b/virtManager/createpool.py
index ef8a9d06..5069562b 100644
--- a/virtManager/createpool.py
+++ b/virtManager/createpool.py
@@ -398,7 +398,7 @@ class vmmCreatePool(vmmGObjectUI):
                 self.finish()
             else:
                 notebook.next_page()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Uncaught error validating input: %s") % str(e))
             return
 
@@ -495,7 +495,7 @@ class vmmCreatePool(vmmGObjectUI):
             else:
                 self._pool = self._make_stub_pool()
             self._pool.name = self.get_config_name()
-        except ValueError, e:
+        except ValueError as e:
             return self.err.val_err(_("Pool Parameter Error"), e)
 
         return True
@@ -525,7 +525,7 @@ class vmmCreatePool(vmmGObjectUI):
                 self._pool.source_name = source_name
 
             self._pool.validate()
-        except ValueError, e:
+        except ValueError as e:
             return self.err.val_err(_("Pool Parameter Error"), e)
 
         buildval = self.widget("pool-build").get_active()
diff --git a/virtManager/createvol.py b/virtManager/createvol.py
index ffaf1e8b..49285368 100644
--- a/virtManager/createvol.py
+++ b/virtManager/createvol.py
@@ -289,7 +289,7 @@ class vmmCreateVolume(vmmGObjectUI):
         try:
             if not self.validate():
                 return
-        except Exception, e:
+        except Exception as e:
             self.show_err(_("Uncaught error validating input: %s") % str(e))
             return
 
@@ -337,7 +337,7 @@ class vmmCreateVolume(vmmGObjectUI):
             if fmt:
                 self.vol.format = fmt
             self.vol.validate()
-        except ValueError, e:
+        except ValueError as e:
             return self.val_err(_("Volume Parameter Error"), e)
         return True
 
diff --git a/virtManager/delete.py b/virtManager/delete.py
index a1ade663..d564d72d 100644
--- a/virtManager/delete.py
+++ b/virtManager/delete.py
@@ -176,7 +176,7 @@ class vmmDeleteDialog(vmmGObjectUI):
                     logging.debug("Deleting path: %s", path)
                     meter.start(text=_("Deleting path '%s'") % path)
                     self._async_delete_path(conn, path, meter)
-                except Exception, e:
+                except Exception as e:
                     storage_errors.append((str(e),
                                           "".join(traceback.format_exc())))
                 meter.end(0)
@@ -184,7 +184,7 @@ class vmmDeleteDialog(vmmGObjectUI):
             logging.debug("Removing VM '%s'", self.vm.get_name())
             self.vm.delete()
 
-        except Exception, e:
+        except Exception as e:
             error = (_("Error deleting virtual machine '%s': %s") %
                       (self.vm.get_name(), str(e)))
             details = "".join(traceback.format_exc())
@@ -390,7 +390,7 @@ def do_we_default(conn, vm_name, vol, path, ro, shared, is_media):
                 namestr = append_str(namestr, name, delim="\n- ")
             info = append_str(info, _("Storage is in use by the following "
                                       "virtual machines:\n- %s " % namestr))
-    except Exception, e:
+    except Exception as e:
         logging.exception("Failed checking disk conflict: %s", str(e))
 
     return (not info, info)
diff --git a/virtManager/details.py b/virtManager/details.py
index 92086fa0..20be2f46 100644
--- a/virtManager/details.py
+++ b/virtManager/details.py
@@ -1226,7 +1226,7 @@ class vmmDetails(vmmGObjectUI):
                 self.refresh_panic_page()
             else:
                 pagetype = -1
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error refreshing hardware page: %s") % str(e))
             # Don't return, we want the rest of the bits to run regardless
 
@@ -1415,7 +1415,7 @@ class vmmDetails(vmmGObjectUI):
                 self.addhw = vmmAddHardware(self.vm, self.is_customize_dialog)
 
             self.addhw.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err((_("Error launching hardware dialog: %s") %
                                str(e)))
 
@@ -1496,7 +1496,7 @@ class vmmDetails(vmmGObjectUI):
         ignore = src
         try:
             return self._take_screenshot()
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error taking screenshot: %s") % str(e))
 
     def control_vm_usb_redirection(self, src):
@@ -1833,7 +1833,7 @@ class vmmDetails(vmmGObjectUI):
     def _eject_media(self, disk):
         try:
             self._change_storage_media(disk, None)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err((_("Error disconnecting media: %s") % e))
 
     def _insert_media(self, disk):
@@ -1854,7 +1854,7 @@ class vmmDetails(vmmGObjectUI):
             dialog.disk = disk
 
             dialog.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err((_("Error launching media dialog: %s") % e))
             return
 
@@ -1920,7 +1920,7 @@ class vmmDetails(vmmGObjectUI):
                 ret = self.config_hostdev_apply(key)
             else:
                 ret = False
-        except Exception, e:
+        except Exception as e:
             return self.err.show_err(_("Error apply changes: %s") % e)
 
         if ret is not False:
@@ -2052,7 +2052,7 @@ class vmmDetails(vmmGObjectUI):
             auto = self.widget("boot-autostart")
             try:
                 self.vm.set_autostart(auto.get_active())
-            except Exception, e:
+            except Exception as e:
                 self.err.show_err(
                     (_("Error changing autostart value: %s") % str(e)))
                 return False
@@ -2289,7 +2289,7 @@ class vmmDetails(vmmGObjectUI):
         # Define the change
         try:
             self.vm.remove_device(devobj)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error Removing Device: %s") % str(e))
             return
 
@@ -2298,7 +2298,7 @@ class vmmDetails(vmmGObjectUI):
         try:
             if self.vm.is_active():
                 self.vm.detach_device(devobj)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Device could not be hotUNplugged: %s", str(e))
             detach_err = (str(e), "".join(traceback.format_exc()))
 
@@ -2328,7 +2328,7 @@ class vmmDetails(vmmGObjectUI):
         try:
             if self.is_visible():
                 self.vm.ensure_latest_xml()
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             if util.exception_is_libvirt_error(e, "VIR_ERR_NO_DOMAIN"):
                 self.close()
                 return
diff --git a/virtManager/domain.py b/virtManager/domain.py
index 3830d221..8f6ac69b 100644
--- a/virtManager/domain.py
+++ b/virtManager/domain.py
@@ -1538,7 +1538,7 @@ class vmmDomain(vmmLibvirtObject):
         if self._has_managed_save is None:
             try:
                 self._has_managed_save = self._backend.hasManagedSaveImage(0)
-            except libvirt.libvirtError, e:
+            except libvirt.libvirtError as e:
                 if not util.exception_is_libvirt_error(e, "VIR_ERR_NO_DOMAIN"):
                     raise
                 return False
@@ -1853,7 +1853,7 @@ class vmmDomain(vmmLibvirtObject):
                 if io:
                     rx += io[0]
                     tx += io[4]
-            except libvirt.libvirtError, err:
+            except libvirt.libvirtError as err:
                 if util.is_error_nosupport(err):
                     logging.debug("Net stats not supported: %s", err)
                     self._stats_net_supported = False
@@ -1903,7 +1903,7 @@ class vmmDomain(vmmLibvirtObject):
                 if io:
                     rd += io[1]
                     wr += io[3]
-            except libvirt.libvirtError, err:
+            except libvirt.libvirtError as err:
                 if util.is_error_nosupport(err):
                     logging.debug("Disk stats not supported: %s", err)
                     self._stats_disk_supported = False
@@ -1935,7 +1935,7 @@ class vmmDomain(vmmLibvirtObject):
             secs = 5
             self._backend.setMemoryStatsPeriod(secs,
                 libvirt.VIR_DOMAIN_AFFECT_LIVE)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error setting memstats period: %s", e)
 
     def _sample_mem_stats(self):
@@ -1958,7 +1958,7 @@ class vmmDomain(vmmLibvirtObject):
 
             if "unused" in stats:
                 curmem = max(0, totalmem - stats.get("unused", totalmem))
-        except libvirt.libvirtError, err:
+        except libvirt.libvirtError as err:
             logging.error("Error reading mem stats: %s", err)
 
         pcentCurrMem = (curmem / float(totalmem)) * 100
diff --git a/virtManager/engine.py b/virtManager/engine.py
index a5e4ce03..686f6f5a 100644
--- a/virtManager/engine.py
+++ b/virtManager/engine.py
@@ -383,7 +383,7 @@ class vmmEngine(vmmGObject):
             ignore1, ignore2, conn, kwargs = self._tick_queue.get()
             try:
                 conn.tick_from_engine(**kwargs)
-            except Exception, e:
+            except Exception as e:
                 tb = "".join(traceback.format_exc())
                 error_msg = (_("Error polling connection '%s': %s")
                     % (conn.get_uri(), e))
@@ -717,7 +717,7 @@ class vmmEngine(vmmGObject):
             if self.windowAbout is None:
                 self.windowAbout = vmmAbout()
             self.windowAbout.show()
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching 'About' dialog: %s") % str(e))
 
     def _get_preferences(self):
@@ -731,7 +731,7 @@ class vmmEngine(vmmGObject):
     def _do_show_preferences(self, src):
         try:
             self._get_preferences().show(src.topwin)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching preferences: %s") % str(e))
 
     def _get_host_dialog(self, uri):
@@ -752,7 +752,7 @@ class vmmEngine(vmmGObject):
     def _do_show_host(self, src, uri):
         try:
             self._get_host_dialog(uri).show()
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching host dialog: %s") % str(e))
 
 
@@ -778,7 +778,7 @@ class vmmEngine(vmmGObject):
     def _do_show_connect(self, src, reset_state=True):
         try:
             self._get_connect_dialog().show(src.topwin, reset_state)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching connect dialog: %s") % str(e))
 
     def _do_edit_connect(self, src, connection):
@@ -830,7 +830,7 @@ class vmmEngine(vmmGObject):
                     details.activate_default_page()
 
             details.show()
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching details: %s") % str(e))
 
     def _do_show_vm(self, src, uri, connkey):
@@ -882,7 +882,7 @@ class vmmEngine(vmmGObject):
         try:
             manager = self.get_manager()
             manager.show()
-        except Exception, e:
+        except Exception as e:
             if not src:
                 raise
             src.err.show_err(_("Error launching manager: %s") % str(e))
@@ -901,7 +901,7 @@ class vmmEngine(vmmGObject):
     def _do_show_create(self, src, uri):
         try:
             self._get_create_dialog().show(src.topwin, uri)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching manager: %s") % str(e))
 
     def _do_show_migrate(self, src, uri, connkey):
@@ -913,7 +913,7 @@ class vmmEngine(vmmGObject):
                 self.windowMigrate = vmmMigrateDialog(self)
 
             self.windowMigrate.show(src.topwin, vm)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching migrate dialog: %s") % str(e))
 
     def _do_show_clone(self, src, uri, connkey):
@@ -929,7 +929,7 @@ class vmmEngine(vmmGObject):
                 clone_window.set_orig_vm(orig_vm)
 
             clone_window.show(src.topwin)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error setting clone parameters: %s") % str(e))
 
     def _do_refresh_inspection(self, src_ignore, uri, connkey):
@@ -1109,7 +1109,7 @@ class vmmEngine(vmmGObject):
 
         try:
             vm.abort_job()
-        except Exception, e:
+        except Exception as e:
             logging.exception("Error cancelling save job")
             asyncjob.show_warning(_("Error cancelling save job: %s") % str(e))
             return
@@ -1182,7 +1182,7 @@ class vmmEngine(vmmGObject):
                 try:
                     vm.remove_saved_image()
                     self._do_run_domain(src, uri, connkey)
-                except Exception, e:
+                except Exception as e:
                     src.err.show_err(_("Error removing domain state: %s")
                                      % str(e))
 
@@ -1250,5 +1250,5 @@ class vmmEngine(vmmGObject):
             if not self.delete_dialog:
                 self.delete_dialog = vmmDeleteDialog()
             self.delete_dialog.show(vm, src.topwin)
-        except Exception, e:
+        except Exception as e:
             src.err.show_err(_("Error launching delete dialog: %s") % str(e))
diff --git a/virtManager/fsdetails.py b/virtManager/fsdetails.py
index 2cd49ad6..1a93661b 100644
--- a/virtManager/fsdetails.py
+++ b/virtManager/fsdetails.py
@@ -321,7 +321,7 @@ class vmmFSDetails(vmmGObjectUI):
                     self._dev.format = fsformat
             if wrpolicy:
                 self._dev.wrpolicy = wrpolicy
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Filesystem parameter error"), e)
 
     def _browse_file(self, textent, isdir=False):
diff --git a/virtManager/host.py b/virtManager/host.py
index 58608de0..537febf2 100644
--- a/virtManager/host.py
+++ b/virtManager/host.py
@@ -407,7 +407,7 @@ class vmmHost(vmmGObjectUI):
             if self.addnet is None:
                 self.addnet = vmmCreateNetwork(self.conn)
             self.addnet.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error launching network wizard: %s") % str(e))
 
     def net_apply(self):
@@ -450,7 +450,7 @@ class vmmHost(vmmGObjectUI):
                         dialog_type=Gtk.MessageType.INFO)
 
 
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error changing network settings: %s") % str(e))
             return
         finally:
@@ -518,7 +518,7 @@ class vmmHost(vmmGObjectUI):
         try:
             net = self.conn.get_net(connkey)
             self.populate_net_state(net)
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
             self.set_net_error_page(_("Error selecting network: %s") % e)
         finally:
@@ -754,7 +754,7 @@ class vmmHost(vmmGObjectUI):
             if self.addinterface is None:
                 self.addinterface = vmmCreateInterface(self.conn)
             self.addinterface.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error launching interface wizard: %s") %
                               str(e))
 
@@ -781,7 +781,7 @@ class vmmHost(vmmGObjectUI):
                       interface.get_name())
         try:
             interface.set_startmode(newmode)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error setting interface startmode: %s") %
                               str(e))
             return
@@ -807,7 +807,7 @@ class vmmHost(vmmGObjectUI):
 
         try:
             self.populate_interface_state(connkey)
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
             self.set_interface_error_page(_("Error selecting interface: %s") %
                                           e)
@@ -859,7 +859,7 @@ class vmmHost(vmmGObjectUI):
         used_by = None
         try:
             used_by = vmmCreateInterface.iface_in_use_by(self.conn, name)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error looking up iface usage: %s", e)
         self.widget("interface-inuseby").set_text(used_by or "-")
 
diff --git a/virtManager/libvirtobject.py b/virtManager/libvirtobject.py
index 261b8cca..c9be4770 100644
--- a/virtManager/libvirtobject.py
+++ b/virtManager/libvirtobject.py
@@ -278,7 +278,7 @@ class vmmLibvirtObject(vmmGObject):
             # status = None forces a signal to be emitted
             self.__status = None
             self._refresh_status()
-        except Exception, e:
+        except Exception as e:
             # If we hit an exception here, it's often that the object
             # disappeared, so request the poll loop to be updated
             logging.debug("Error refreshing %s from events: %s", self, e)
diff --git a/virtManager/manager.py b/virtManager/manager.py
index 31fe4570..5f381574 100644
--- a/virtManager/manager.py
+++ b/virtManager/manager.py
@@ -744,7 +744,7 @@ class vmmManager(vmmGObjectUI):
 
             desc = vm.get_description()
             row[ROW_HINT] = util.xml_escape(desc)
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             if util.exception_is_libvirt_error(e, "VIR_ERR_NO_DOMAIN"):
                 return
             raise
diff --git a/virtManager/migrate.py b/virtManager/migrate.py
index 26e71ea5..cd1c7e85 100644
--- a/virtManager/migrate.py
+++ b/virtManager/migrate.py
@@ -376,7 +376,7 @@ class vmmMigrateDialog(vmmGObjectUI):
                 uri = self.widget("migrate-tunnel-uri").get_text()
             else:
                 uri = self._build_regular_migrate_uri()
-        except Exception, e:
+        except Exception as e:
             details = "".join(traceback.format_exc())
             self.err.show_err((_("Uncaught error validating input: %s") %
                                str(e)),
@@ -409,7 +409,7 @@ class vmmMigrateDialog(vmmGObjectUI):
 
         try:
             vm.abort_job()
-        except Exception, e:
+        except Exception as e:
             logging.exception("Error cancelling migrate job")
             asyncjob.show_warning(_("Error cancelling migrate job: %s") % e)
             return
diff --git a/virtManager/netlist.py b/virtManager/netlist.py
index acbba224..0006d200 100644
--- a/virtManager/netlist.py
+++ b/virtManager/netlist.py
@@ -363,7 +363,7 @@ class vmmNetworkList(vmmGObjectUI):
             try:
                 netobj.start()
                 logging.info("Started network '%s'", devname)
-            except Exception, e:
+            except Exception as e:
                 return self.err.show_err(_("Could not start virtual network "
                                       "'%s': %s") % (devname, str(e)))
 
@@ -388,7 +388,7 @@ class vmmNetworkList(vmmGObjectUI):
                 net.virtualport.typeid = vport_typeid or None
                 net.virtualport.typeidversion = vport_idver or None
                 net.virtualport.instanceid = vport_instid or None
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Error with network parameters."), e)
 
         # Make sure there is no mac address collision
diff --git a/virtManager/packageutils.py b/virtManager/packageutils.py
index 31246e61..ddb15f68 100644
--- a/virtManager/packageutils.py
+++ b/virtManager/packageutils.py
@@ -61,7 +61,7 @@ def check_packagekit(parent, errbox, packages):
             packagekit_install(parent, packages)
         else:
             logging.debug("Nothing to install")
-    except Exception, e:
+    except Exception as e:
         # PackageKit frontend should report an error for us, so just log
         # the actual error
         logging.debug("Error talking to PackageKit: %s", str(e), exc_info=True)
diff --git a/virtManager/serialcon.py b/virtManager/serialcon.py
index 1711f037..87ac8109 100644
--- a/virtManager/serialcon.py
+++ b/virtManager/serialcon.py
@@ -411,7 +411,7 @@ class vmmSerialConsole(vmmGObject):
                 self.console.open(self.lookup_dev(), self.terminal)
             self.box.set_current_page(0)
             return True
-        except Exception, e:
+        except Exception as e:
             logging.exception("Error opening serial console")
             self.show_error(_("Error connecting to text console: %s") % e)
             try:
diff --git a/virtManager/snapshots.py b/virtManager/snapshots.py
index 6f426a35..73922d50 100644
--- a/virtManager/snapshots.py
+++ b/virtManager/snapshots.py
@@ -222,7 +222,7 @@ class vmmSnapshotPage(vmmGObjectUI):
 
         try:
             snapshots = self.vm.list_snapshots()
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
             self._set_error_page(_("Error refreshing snapshot list: %s") %
                                 str(e))
@@ -480,7 +480,7 @@ class vmmSnapshotPage(vmmGObjectUI):
             newsnap.validate()
             newsnap.get_xml_config()
             return newsnap
-        except Exception, e:
+        except Exception as e:
             return self.err.val_err(_("Error validating snapshot: %s") % e)
 
     def _get_screenshot_data_for_save(self):
@@ -663,6 +663,6 @@ class vmmSnapshotPage(vmmGObjectUI):
 
         try:
             self._set_snapshot_state(snap[0])
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
             self._set_error_page(_("Error selecting snapshot: %s") % str(e))
diff --git a/virtManager/storagelist.py b/virtManager/storagelist.py
index 7666764b..eea64e57 100644
--- a/virtManager/storagelist.py
+++ b/virtManager/storagelist.py
@@ -509,7 +509,7 @@ class vmmStorageList(vmmGObjectUI):
 
         try:
             self._populate_pool_state(connkey)
-        except Exception, e:
+        except Exception as e:
             logging.exception(e)
             self._set_storage_error_page(_("Error selecting pool: %s") % e)
         self._disable_pool_apply()
@@ -616,7 +616,7 @@ class vmmStorageList(vmmGObjectUI):
                 self._addpool = vmmCreatePool(self.conn)
                 self._addpool.connect("pool-created", self._pool_created)
             self._addpool.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error launching pool wizard: %s") % str(e))
 
     def _pool_delete(self, src):
@@ -660,7 +660,7 @@ class vmmStorageList(vmmGObjectUI):
             if EDIT_POOL_NAME in self._active_edits:
                 pool.define_name(self.widget("pool-name-entry").get_text())
                 self.idle_add(self._populate_pools)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error changing pool settings: %s") % str(e))
             return
 
@@ -699,7 +699,7 @@ class vmmStorageList(vmmGObjectUI):
             self._addvol.set_modal(self.topwin.get_modal())
             self._addvol.set_name_hint(self._name_hint)
             self._addvol.show(self.topwin)
-        except Exception, e:
+        except Exception as e:
             self.err.show_err(_("Error launching volume wizard: %s") % str(e))
 
     def _vol_delete(self, src_ignore):
diff --git a/virtManager/storagepool.py b/virtManager/storagepool.py
index d9d9f8a2..6eaf16f0 100644
--- a/virtManager/storagepool.py
+++ b/virtManager/storagepool.py
@@ -47,7 +47,7 @@ class vmmStorageVolume(vmmLibvirtObject):
     def _XMLDesc(self, flags):
         try:
             return self._backend.XMLDesc(flags)
-        except Exception, e:
+        except Exception as e:
             logging.debug("XMLDesc for vol=%s failed: %s",
                 self._backend.key(), e)
             raise
diff --git a/virtManager/viewers.py b/virtManager/viewers.py
index 54c2c973..322da319 100644
--- a/virtManager/viewers.py
+++ b/virtManager/viewers.py
@@ -419,7 +419,7 @@ class VNCViewer(Viewer):
 
             seq = GtkVnc.GrabSequence.new(keys)
             self._display.set_grab_keys(seq)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error when getting the grab keys combination: %s",
                           str(e))
 
@@ -473,7 +473,7 @@ class VNCViewer(Viewer):
             sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
             sock.connect(self._ginfo.gsocket)
             self._sockfd = sock
-        except Exception, e:
+        except Exception as e:
             raise RuntimeError(_("Error opening socket path '%s': %s") %
                                (self._ginfo.gsocket, e))
 
@@ -685,7 +685,7 @@ class SpiceViewer(Viewer):
 
             seq = SpiceClientGtk.GrabSequence.new(keys)
             self._display.set_grab_keys(seq)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error when getting the grab keys combination: %s",
                           str(e))
 
diff --git a/virtconv/ovf.py b/virtconv/ovf.py
index fa657d44..0a770c98 100644
--- a/virtconv/ovf.py
+++ b/virtconv/ovf.py
@@ -370,7 +370,7 @@ class ovf_parser(parser_class):
 
         try:
             return _xml_parse_wrapper(xml, parse_cb)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error parsing OVF XML: %s", str(e))
 
         return False
diff --git a/virtconv/vmx.py b/virtconv/vmx.py
index aa99e35d..0de72826 100644
--- a/virtconv/vmx.py
+++ b/virtconv/vmx.py
@@ -83,7 +83,7 @@ class _VMXFile(object):
             try:
                 lineobj = _VMXLine(line)
                 self.lines.append(lineobj)
-            except Exception, e:
+            except Exception as e:
                 raise Exception(_("Syntax error at line %d: %s\n%s") %
                     (len(self.lines) + 1, line.strip(), e))
 
diff --git a/virtinst/cli.py b/virtinst/cli.py
index 7debb4f4..1c2fd578 100644
--- a/virtinst/cli.py
+++ b/virtinst/cli.py
@@ -196,7 +196,7 @@ def setupLogging(appname, debug_stdout, do_quiet, cli_app=True):
 
             try:
                 os.makedirs(vi_dir, 0751)
-            except IOError, e:
+            except IOError as e:
                 raise RuntimeError("Could not create directory %s: %s" %
                                    (vi_dir, e))
 
@@ -204,7 +204,7 @@ def setupLogging(appname, debug_stdout, do_quiet, cli_app=True):
             os.path.exists(logfile) and
             not os.access(logfile, os.W_OK)):
             raise RuntimeError("No write access to logfile %s" % logfile)
-    except Exception, e:
+    except Exception as e:
         logging.warning("Error setting up logfile: %s", e)
         logfile = None
 
@@ -473,7 +473,7 @@ def connect_console(guest, consolecb, wait):
     # If we connected the console, wait for it to finish
     try:
         os.waitpid(child, 0)
-    except OSError, e:
+    except OSError as e:
         logging.debug("waitpid: %s: %s", e.errno, e.message)
 
 
@@ -1207,7 +1207,7 @@ class VirtCLIParser(object):
                 self.guest.add_child(obj)
 
             ret += util.listify(objs)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Exception parsing inst=%s optstr=%s",
                           inst, self.optstr, exc_info=True)
             fail(_("Error: --%(cli_arg_name)s %(options)s: %(err)s") %
@@ -1238,7 +1238,7 @@ class VirtCLIParser(object):
                 if valid:
                     ret.append(inst)
                 self._check_leftover_opts(optdict)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Exception parsing inst=%s optstr=%s",
                           inst, self.optstr, exc_info=True)
             fail(_("Error: --%(cli_arg_name)s %(options)s: %(err)s") %
@@ -1943,7 +1943,7 @@ class ParserDisk(VirtCLIParser):
                 return None
             try:
                 return float(val)
-            except Exception, e:
+            except Exception as e:
                 fail(_("Improper value for 'size': %s") % str(e))
 
         def convert_perms(val):
diff --git a/virtinst/cloner.py b/virtinst/cloner.py
index 66a2bca9..317150aa 100644
--- a/virtinst/cloner.py
+++ b/virtinst/cloner.py
@@ -105,7 +105,7 @@ class Cloner(object):
             Guest.validate_name(self.conn, name,
                                 check_collision=not self.replace,
                                 validate=False)
-        except ValueError, e:
+        except ValueError as e:
             raise ValueError(_("Invalid name for new guest: %s") % e)
 
         self._clone_name = name
@@ -115,7 +115,7 @@ class Cloner(object):
     def set_clone_uuid(self, uuid):
         try:
             util.validate_uuid(uuid)
-        except ValueError, e:
+        except ValueError as e:
             raise ValueError(_("Invalid uuid for new guest: %s") % e)
 
         if util.vm_uuid_collision(self.conn, uuid):
@@ -147,7 +147,7 @@ class Cloner(object):
                     disk.set_vol_install(vol_install)
                 disk.validate()
                 disklist.append(disk)
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Error setting clone path.", exc_info=True)
                 raise ValueError(_("Could not use path '%s' for cloning: %s") %
                                  (path, str(e)))
@@ -486,7 +486,7 @@ class Cloner(object):
                     dst_dev.setup(meter=meter)
                 if self._nvram_disk:
                     self._nvram_disk.setup(meter=meter)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Duplicate failed: %s", str(e))
             if dom:
                 dom.undefine()
@@ -580,7 +580,7 @@ class Cloner(object):
                     if newd.wants_storage_creation():
                         raise ValueError(_("Disk path '%s' does not exist.") %
                                          newd.path)
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Exception creating clone disk objects",
                     exc_info=True)
                 raise ValueError(_("Could not determine original disk "
diff --git a/virtinst/connection.py b/virtinst/connection.py
index bdf17179..a7d27c97 100644
--- a/virtinst/connection.py
+++ b/virtinst/connection.py
@@ -238,7 +238,7 @@ class VirtualConnection(object):
                 try:
                     xml = vol.XMLDesc(0)
                     ret.append(StorageVolume(weakref.ref(self), parsexml=xml))
-                except Exception, e:
+                except Exception as e:
                     logging.debug("Fetching volume XML failed: %s", e)
 
         if self.cache_object_fetch:
diff --git a/virtinst/devicedisk.py b/virtinst/devicedisk.py
index 01e26e18..67e705e7 100644
--- a/virtinst/devicedisk.py
+++ b/virtinst/devicedisk.py
@@ -212,7 +212,7 @@ class VirtualDisk(VirtualDevice):
         try:
             # Get UID for string name
             uid = pwd.getpwnam(username)[2]
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error looking up username: %s", str(e))
             return []
 
@@ -316,7 +316,7 @@ class VirtualDisk(VirtualDevice):
 
                     logging.debug("setfacl failed, trying old fashioned way")
                     fix_perms(dirname, useacl)
-            except Exception, e:
+            except Exception as e:
                 errdict[dirname] = str(e)
 
         return errdict
@@ -785,7 +785,7 @@ class VirtualDisk(VirtualDevice):
                 parent_pool = conn.storagePoolLookupByName(self.source_pool)
                 vol_object = parent_pool.storageVolLookupByName(
                     self.source_volume)
-            except Exception, e:
+            except Exception as e:
                 self._source_volume_err = str(e)
                 logging.debug("Error fetching source pool=%s vol=%s",
                     self.source_pool, self.source_volume, exc_info=True)
diff --git a/virtinst/diskbackend.py b/virtinst/diskbackend.py
index 5198057c..8d2acf56 100644
--- a/virtinst/diskbackend.py
+++ b/virtinst/diskbackend.py
@@ -55,7 +55,7 @@ def _lookup_vol_by_path(conn, path):
         vol = conn.storageVolLookupByPath(path)
         vol.info()
         return vol, None
-    except libvirt.libvirtError, e:
+    except libvirt.libvirtError as e:
         if (hasattr(libvirt, "VIR_ERR_NO_STORAGE_VOL") and
             e.get_error_code() != libvirt.VIR_ERR_NO_STORAGE_VOL):
             raise
@@ -123,7 +123,7 @@ def check_if_path_managed(conn, path):
                 vol = _lookup_vol_by_basename(pool, path)
             except:
                 pass
-    except Exception, e:
+    except Exception as e:
         vol = None
         pool = None
         verr = str(e)
@@ -475,7 +475,7 @@ class CloneStorageCreator(_StorageCreator):
                     i += s
                     if i < size_bytes:
                         meter.update(i)
-            except OSError, e:
+            except OSError as e:
                 raise RuntimeError(_("Error cloning diskimage %s to %s: %s") %
                                 (self._input_path, self._output_path, str(e)))
         finally:
diff --git a/virtinst/distroinstaller.py b/virtinst/distroinstaller.py
index 0eee9f35..a758f74d 100644
--- a/virtinst/distroinstaller.py
+++ b/virtinst/distroinstaller.py
@@ -187,7 +187,7 @@ class DistroInstaller(Installer):
             dev.validate()
 
             val = dev.path
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error validating install location", exc_info=True)
             raise ValueError(_("Validating install media '%s' failed: %s") %
                 (str(val), e))
@@ -209,7 +209,7 @@ class DistroInstaller(Installer):
             try:
                 try:
                     fetcher.prepareLocation()
-                except ValueError, e:
+                except ValueError as e:
                     logging.debug("Error preparing install location",
                         exc_info=True)
                     raise ValueError(_("Invalid install location: ") + str(e))
diff --git a/virtinst/guest.py b/virtinst/guest.py
index bf93432d..379bddd1 100644
--- a/virtinst/guest.py
+++ b/virtinst/guest.py
@@ -85,7 +85,7 @@ class Guest(XMLBuilder):
 
             logging.info("Undefining guest '%s'", name)
             vm.undefine()
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             raise RuntimeError(_("Could not remove old vm '%s': %s") %
                                (str(e)))
 
@@ -438,7 +438,7 @@ class Guest(XMLBuilder):
         try:
             logging.debug("XML fetched from libvirt object:\n%s",
                           self.domain.XMLDesc(0))
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error fetching XML from libvirt object: %s", e)
 
 
@@ -451,7 +451,7 @@ class Guest(XMLBuilder):
 
         try:
             self.domain.setAutostart(True)
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             if util.is_error_nosupport(e):
                 logging.warn("Could not set autostart flag: libvirt "
                              "connection does not support autostart.")
@@ -527,7 +527,7 @@ class Guest(XMLBuilder):
                     os.unlink(disk.path)
 
                 meter.end(0)
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Failed to remove disk '%s'",
                     name, exc_info=True)
                 logging.error("Failed to remove disk '%s': %s", name, e)
diff --git a/virtinst/hostkeymap.py b/virtinst/hostkeymap.py
index 904333e9..71503730 100644
--- a/virtinst/hostkeymap.py
+++ b/virtinst/hostkeymap.py
@@ -117,7 +117,7 @@ def _default_keymap():
                 logging.debug("Found keymap=%s in %s", kt, path)
                 break
             logging.debug("Didn't find keymap in '%s'", path)
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error parsing '%s': %s", path, str(e))
 
     if kt is None:
diff --git a/virtinst/interface.py b/virtinst/interface.py
index 8b57ab85..7621751b 100644
--- a/virtinst/interface.py
+++ b/virtinst/interface.py
@@ -254,21 +254,21 @@ class Interface(XMLBuilder):
 
         try:
             iface = self.conn.interfaceDefineXML(xml, 0)
-        except Exception, e:
+        except Exception as e:
             raise RuntimeError(_("Could not define interface: %s") % str(e))
 
         errmsg = None
         if create and not errmsg:
             try:
                 iface.create(0)
-            except Exception, e:
+            except Exception as e:
                 errmsg = _("Could not create interface: %s") % str(e)
 
         if errmsg:
             # Try and clean up the leftover pool
             try:
                 iface.undefine()
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Error cleaning up interface after failure: " +
                               "%s" % str(e))
             raise RuntimeError(errmsg)
diff --git a/virtinst/pollhelpers.py b/virtinst/pollhelpers.py
index 2090b8c8..b9a3d009 100644
--- a/virtinst/pollhelpers.py
+++ b/virtinst/pollhelpers.py
@@ -35,7 +35,7 @@ def _new_poll_helper(origmap, typename, listfunc, buildfunc):
 
     try:
         objs = listfunc()
-    except Exception, e:
+    except Exception as e:
         logging.debug("Unable to list all %ss: %s", typename, e)
 
     for obj in objs:
@@ -75,11 +75,11 @@ def _old_poll_helper(origmap, typename,
 
     try:
         newActiveNames = active_list()
-    except Exception, e:
+    except Exception as e:
         logging.debug("Unable to list active %ss: %s", typename, e)
     try:
         newInactiveNames = inactive_list()
-    except Exception, e:
+    except Exception as e:
         logging.debug("Unable to list inactive %ss: %s", typename, e)
 
     def check_obj(name):
@@ -89,7 +89,7 @@ def _old_poll_helper(origmap, typename,
         if connkey not in origmap:
             try:
                 obj = lookup_func(name)
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Could not fetch %s '%s': %s",
                               typename, connkey, e)
                 return
@@ -217,12 +217,12 @@ def _old_fetch_vms(backend, origmap, build_func):
 
     try:
         newActiveIDs = backend.listDomainsID()
-    except Exception, e:
+    except Exception as e:
         logging.debug("Unable to list active domains: %s", e)
 
     try:
         newInactiveNames = backend.listDefinedDomains()
-    except Exception, e:
+    except Exception as e:
         logging.exception("Unable to list inactive domains: %s", e)
 
     def add_vm(vm):
diff --git a/virtinst/storage.py b/virtinst/storage.py
index 808891f3..1526b342 100644
--- a/virtinst/storage.py
+++ b/virtinst/storage.py
@@ -160,7 +160,7 @@ class StoragePool(_StorageObject):
 
         try:
             xml = conn.findStoragePoolSources(pool_type, source_xml, 0)
-        except libvirt.libvirtError, e:
+        except libvirt.libvirtError as e:
             if util.is_error_nosupport(e):
                 return []
             raise
@@ -228,7 +228,7 @@ class StoragePool(_StorageObject):
             defpool.install(build=True, create=True, autostart=True)
             conn.clear_cache(pools=True)
             return defpool
-        except Exception, e:
+        except Exception as e:
             raise RuntimeError(
                 _("Couldn't create default storage pool '%s': %s") %
                 (path, str(e)))
@@ -529,33 +529,33 @@ class StoragePool(_StorageObject):
 
         try:
             pool = self.conn.storagePoolDefineXML(xml, 0)
-        except Exception, e:
+        except Exception as e:
             raise RuntimeError(_("Could not define storage pool: %s") % str(e))
 
         errmsg = None
         if build:
             try:
                 pool.build(libvirt.VIR_STORAGE_POOL_BUILD_NEW)
-            except Exception, e:
+            except Exception as e:
                 errmsg = _("Could not build storage pool: %s") % str(e)
 
         if create and not errmsg:
             try:
                 pool.create(0)
-            except Exception, e:
+            except Exception as e:
                 errmsg = _("Could not start storage pool: %s") % str(e)
 
         if autostart and not errmsg:
             try:
                 pool.setAutostart(True)
-            except Exception, e:
+            except Exception as e:
                 errmsg = _("Could not set pool autostart flag: %s") % str(e)
 
         if errmsg:
             # Try and clean up the leftover pool
             try:
                 pool.undefine()
-            except Exception, e:
+            except Exception as e:
                 logging.debug("Error cleaning up pool after failure: " +
                               "%s" % str(e))
             raise RuntimeError(errmsg)
@@ -846,7 +846,7 @@ class StorageVolume(_StorageObject):
             logging.debug("Storage volume '%s' install complete.",
                           self.name)
             return vol
-        except Exception, e:
+        except Exception as e:
             logging.debug("Error creating storage volume", exc_info=True)
             raise RuntimeError("Couldn't create storage volume "
                                "'%s': '%s'" % (self.name, str(e)))
diff --git a/virtinst/support.py b/virtinst/support.py
index 880e4b7b..1899125f 100644
--- a/virtinst/support.py
+++ b/virtinst/support.py
@@ -56,13 +56,13 @@ def _get_flag(flag_name):
 def _try_command(func, run_args, check_all_error=False):
     try:
         func(*run_args)
-    except libvirt.libvirtError, e:
+    except libvirt.libvirtError as e:
         if util.is_error_nosupport(e):
             return False
 
         if check_all_error:
             return False
-    except Exception, e:
+    except Exception as e:
         # Other python exceptions likely mean the bindings are horked
         return False
     return True
diff --git a/virtinst/urlfetcher.py b/virtinst/urlfetcher.py
index 1ff5ab2d..2dcfb18e 100644
--- a/virtinst/urlfetcher.py
+++ b/virtinst/urlfetcher.py
@@ -83,7 +83,7 @@ class _URLFetcher(object):
 
         try:
             urlobj, size = self._grabber(url)
-        except Exception, e:
+        except Exception as e:
             raise ValueError(_("Couldn't acquire file %s: %s") %
                                (url, str(e)))
 
@@ -182,7 +182,7 @@ class _HTTPURLFetcher(_URLFetcher):
         try:
             response = requests.head(url, allow_redirects=True)
             response.raise_for_status()
-        except Exception, e:
+        except Exception as e:
             logging.debug("HTTP hasFile request failed: %s", str(e))
             return False
         return True
@@ -224,7 +224,7 @@ class _FTPURLFetcher(_URLFetcher):
             self._ftp = ftplib.FTP()
             self._ftp.connect(parsed.hostname, parsed.port)
             self._ftp.login()
-        except Exception, e:
+        except Exception as e:
             raise ValueError(_("Opening URL %s failed: %s.") %
                               (self.location, str(e)))
 
@@ -259,7 +259,7 @@ class _FTPURLFetcher(_URLFetcher):
             except ftplib.all_errors:
                 # If it's a dir
                 self._ftp.cwd(path)
-        except ftplib.all_errors, e:
+        except ftplib.all_errors as e:
             logging.debug("FTP hasFile: couldn't access %s: %s",
                           url, str(e))
             return False
@@ -707,14 +707,14 @@ class GenericDistro(Distro):
                         self._getTreeinfoMedia("kernel"),
                         self._getTreeinfoMedia("initrd"))
                 except (ConfigParser.NoSectionError,
-                        ConfigParser.NoOptionError), e:
+                        ConfigParser.NoOptionError) as e:
                     logging.debug(e)
 
             if self.treeinfo.has_section(isoSection):
                 try:
                     self._valid_iso_path = self.treeinfo.get(isoSection,
                                                              "boot.iso")
-                except ConfigParser.NoOptionError, e:
+                except ConfigParser.NoOptionError as e:
                     logging.debug(e)
 
         if self.type == "xen":