Issue #16717: get rid of socket.error, replace with OSError

37 files changed, 167 insertions, 164 deletions

diff --git a/Lib/asynchat.py b/Lib/asynchat.py
index 4e26bb5856..bb636ab7a5 100644
--- a/Lib/asynchat.py
+++ b/Lib/asynchat.py
@@ -114,7 +114,7 @@ class async_chat (asyncore.dispatcher):
 
         try:
             data = self.recv (self.ac_in_buffer_size)
-        except socket.error as why:
+        except OSError as why:
             self.handle_error()
             return
 
@@ -243,7 +243,7 @@ class async_chat (asyncore.dispatcher):
             # send the data
             try:
                 num_sent = self.send(data)
-            except socket.error:
+            except OSError:
                 self.handle_error()
                 return
 
diff --git a/Lib/asyncore.py b/Lib/asyncore.py
index 909d9f605d..b15ddeb91b 100644
--- a/Lib/asyncore.py
+++ b/Lib/asyncore.py
@@ -112,7 +112,7 @@ def readwrite(obj, flags):
             obj.handle_expt_event()
         if flags & (select.POLLHUP | select.POLLERR | select.POLLNVAL):
             obj.handle_close()
-    except socket.error as e:
+    except OSError as e:
         if e.args[0] not in _DISCONNECTED:
             obj.handle_error()
         else:
@@ -240,7 +240,7 @@ class dispatcher:
             # passed be connected.
             try:
                 self.addr = sock.getpeername()
-            except socket.error as err:
+            except OSError as err:
                 if err.args[0] in (ENOTCONN, EINVAL):
                     # To handle the case where we got an unconnected
                     # socket.
@@ -304,7 +304,7 @@ class dispatcher:
                 self.socket.getsockopt(socket.SOL_SOCKET,
                                        socket.SO_REUSEADDR) | 1
                 )
-        except socket.error:
+        except OSError:
             pass
 
     # ==================================================
@@ -345,7 +345,7 @@ class dispatcher:
             self.addr = address
             self.handle_connect_event()
         else:
-            raise socket.error(err, errorcode[err])
+            raise OSError(err, errorcode[err])
 
     def accept(self):
         # XXX can return either an address pair or None
@@ -353,7 +353,7 @@ class dispatcher:
             conn, addr = self.socket.accept()
         except TypeError:
             return None
-        except socket.error as why:
+        except OSError as why:
             if why.args[0] in (EWOULDBLOCK, ECONNABORTED, EAGAIN):
                 return None
             else:
@@ -365,7 +365,7 @@ class dispatcher:
         try:
             result = self.socket.send(data)
             return result
-        except socket.error as why:
+        except OSError as why:
             if why.args[0] == EWOULDBLOCK:
                 return 0
             elif why.args[0] in _DISCONNECTED:
@@ -384,7 +384,7 @@ class dispatcher:
                 return b''
             else:
                 return data
-        except socket.error as why:
+        except OSError as why:
             # winsock sometimes raises ENOTCONN
             if why.args[0] in _DISCONNECTED:
                 self.handle_close()
@@ -399,7 +399,7 @@ class dispatcher:
         self.del_channel()
         try:
             self.socket.close()
-        except socket.error as why:
+        except OSError as why:
             if why.args[0] not in (ENOTCONN, EBADF):
                 raise
 
@@ -443,7 +443,7 @@ class dispatcher:
     def handle_connect_event(self):
         err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
         if err != 0:
-            raise socket.error(err, _strerror(err))
+            raise OSError(err, _strerror(err))
         self.handle_connect()
         self.connected = True
         self.connecting = False
diff --git a/Lib/distutils/command/upload.py b/Lib/distutils/command/upload.py
index 8b36851d25..88990b2c6b 100644
--- a/Lib/distutils/command/upload.py
+++ b/Lib/distutils/command/upload.py
@@ -186,7 +186,7 @@ class upload(PyPIRCCommand):
             http.putheader('Authorization', auth)
             http.endheaders()
             http.send(body)
-        except socket.error as e:
+        except OSError as e:
             self.announce(str(e), log.ERROR)
             return
 
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 5efae95a60..2641a1d5c4 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -123,7 +123,7 @@ class FTP:
         if self.sock is not None:
             try:
                 self.quit()
-            except (socket.error, EOFError):
+            except (OSError, EOFError):
                 pass
             finally:
                 if self.sock is not None:
@@ -295,7 +295,7 @@ class FTP:
             try:
                 sock = socket.socket(af, socktype, proto)
                 sock.bind(sa)
-            except socket.error as _:
+            except OSError as _:
                 err = _
                 if sock:
                     sock.close()
@@ -306,8 +306,8 @@ class FTP:
             if err is not None:
                 raise err
             else:
-                raise socket.error("getaddrinfo returns an empty list")
-            raise socket.error(msg)
+                raise OSError("getaddrinfo returns an empty list")
+            raise OSError(msg)
         sock.listen(1)
         port = sock.getsockname()[1] # Get proper port
         host = self.sock.getsockname()[0] # Get proper host
diff --git a/Lib/http/client.py b/Lib/http/client.py
index 6a4496fb49..5e5b3a382e 100644
--- a/Lib/http/client.py
+++ b/Lib/http/client.py
@@ -791,8 +791,8 @@ class HTTPConnection:
 
         if code != 200:
             self.close()
-            raise socket.error("Tunnel connection failed: %d %s" % (code,
-                                                                    message.strip()))
+            raise OSError("Tunnel connection failed: %d %s" % (code,
+                                                               message.strip()))
         while True:
             line = response.fp.readline(_MAXLINE + 1)
             if len(line) > _MAXLINE:
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index bff52a9708..696d363ade 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -393,7 +393,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
             try:
                 self.rpcclt = MyRPCClient(addr)
                 break
-            except socket.error as err:
+            except OSError as err:
                 pass
         else:
             self.display_port_binding_error()
diff --git a/Lib/idlelib/rpc.py b/Lib/idlelib/rpc.py
index 77cb3ac0a3..44b34308b7 100644
--- a/Lib/idlelib/rpc.py
+++ b/Lib/idlelib/rpc.py
@@ -199,7 +199,7 @@ class SocketIO(object):
             raise
         except KeyboardInterrupt:
             raise
-        except socket.error:
+        except OSError:
             raise
         except Exception as ex:
             return ("CALLEXC", ex)
@@ -340,7 +340,7 @@ class SocketIO(object):
                 n = self.sock.send(s[:BUFSIZE])
             except (AttributeError, TypeError):
                 raise IOError("socket no longer exists")
-            except socket.error:
+            except OSError:
                 raise
             else:
                 s = s[n:]
@@ -357,7 +357,7 @@ class SocketIO(object):
                 return None
             try:
                 s = self.sock.recv(BUFSIZE)
-            except socket.error:
+            except OSError:
                 raise EOFError
             if len(s) == 0:
                 raise EOFError
@@ -537,7 +537,7 @@ class RPCClient(SocketIO):
             SocketIO.__init__(self, working_sock)
         else:
             print("** Invalid host: ", address, file=sys.__stderr__)
-            raise socket.error
+            raise OSError
 
     def get_remote_proxy(self, oid):
         return RPCProxy(self, oid)
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 9872af4251..5d321afd90 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -135,8 +135,8 @@ def manage_socket(address):
         try:
             server = MyRPCServer(address, MyHandler)
             break
-        except socket.error as err:
-            print("IDLE Subprocess: socket error: " + err.args[1] +
+        except OSError as err:
+            print("IDLE Subprocess: OSError: " + err.args[1] +
                   ", retrying....", file=sys.__stderr__)
             socket_error = err
     else:
diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 3f8c65a98b..fba3bcab9e 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -174,7 +174,7 @@ class IMAP4:
         except Exception:
             try:
                 self.shutdown()
-            except socket.error:
+            except OSError:
                 pass
             raise
 
@@ -267,7 +267,7 @@ class IMAP4:
         self.file.close()
         try:
             self.sock.shutdown(socket.SHUT_RDWR)
-        except socket.error as e:
+        except OSError as e:
             # The server might already have closed the connection
             if e.errno != errno.ENOTCONN:
                 raise
@@ -899,7 +899,7 @@ class IMAP4:
 
         try:
             self.send(data + CRLF)
-        except (socket.error, OSError) as val:
+        except OSError as val:
             raise self.abort('socket error: %s' % val)
 
         if literal is None:
@@ -924,7 +924,7 @@ class IMAP4:
             try:
                 self.send(literal)
                 self.send(CRLF)
-            except (socket.error, OSError) as val:
+            except OSError as val:
                 raise self.abort('socket error: %s' % val)
 
             if not literator:
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index ef7d2bcd45..5eae183e52 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -844,7 +844,7 @@ def listen(port=DEFAULT_LOGGING_CONFIG_PORT, verify=None):
                                 traceback.print_exc()
                     if self.server.ready:
                         self.server.ready.set()
-            except socket.error as e:
+            except OSError as e:
                 if not isinstance(e.args, tuple):
                     raise
                 else:
diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py
index 4cbc320d35..1491b47987 100644
--- a/Lib/logging/handlers.py
+++ b/Lib/logging/handlers.py
@@ -514,7 +514,7 @@ class SocketHandler(logging.Handler):
             try:
                 self.sock = self.makeSocket()
                 self.retryTime = None # next time, no delay before trying
-            except socket.error:
+            except OSError:
                 #Creation failed, so set the retry time and return.
                 if self.retryTime is None:
                     self.retryPeriod = self.retryStart
@@ -539,7 +539,7 @@ class SocketHandler(logging.Handler):
         if self.sock:
             try:
                 self.sock.sendall(s)
-            except socket.error: #pragma: no cover
+            except OSError: #pragma: no cover
                 self.sock.close()
                 self.sock = None  # so we can call createSocket next time
 
@@ -775,7 +775,7 @@ class SysLogHandler(logging.Handler):
         self.socket = socket.socket(socket.AF_UNIX, self.socktype)
         try:
             self.socket.connect(address)
-        except socket.error:
+        except OSError:
             self.socket.close()
             raise
 
@@ -842,7 +842,7 @@ class SysLogHandler(logging.Handler):
             if self.unixsocket:
                 try:
                     self.socket.send(msg)
-                except socket.error:
+                except OSError:
                     self._connect_unixsocket(self.address)
                     self.socket.send(msg)
             elif self.socktype == socket.SOCK_DGRAM:
diff --git a/Lib/nntplib.py b/Lib/nntplib.py
index 2de6ebd1b5..ffab2c20ed 100644
--- a/Lib/nntplib.py
+++ b/Lib/nntplib.py
@@ -359,7 +359,7 @@ class _NNTPBase:
         if is_connected():
             try:
                 self.quit()
-            except (socket.error, EOFError):
+            except (OSError, EOFError):
                 pass
             finally:
                 if is_connected():
diff --git a/Lib/platform.py b/Lib/platform.py
index 56296916f7..53182c6f27 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -882,7 +882,7 @@ def _node(default=''):
         return default
     try:
         return socket.gethostname()
-    except socket.error:
+    except OSError:
         # Still not working...
         return default
 
diff --git a/Lib/poplib.py b/Lib/poplib.py
index cbd1df9fc9..0f12ae2f2e 100644
--- a/Lib/poplib.py
+++ b/Lib/poplib.py
@@ -272,7 +272,7 @@ class POP3:
         if self.sock is not None:
             try:
                 self.sock.shutdown(socket.SHUT_RDWR)
-            except socket.error as e:
+            except OSError as e:
                 # The server might already have closed the connection
                 if e.errno != errno.ENOTCONN:
                     raise
diff --git a/Lib/smtpd.py b/Lib/smtpd.py
index 778d6d6280..1e239a117c 100755
--- a/Lib/smtpd.py
+++ b/Lib/smtpd.py
@@ -137,7 +137,7 @@ class SMTPChannel(asynchat.async_chat):
         self.num_bytes = 0
         try:
             self.peer = conn.getpeername()
-        except socket.error as err:
+        except OSError as err:
             # a race condition  may occur if the other end is closing
             # before we can get the peername
             self.close()
@@ -668,7 +668,7 @@ class PureProxy(SMTPServer):
         except smtplib.SMTPRecipientsRefused as e:
             print('got SMTPRecipientsRefused', file=DEBUGSTREAM)
             refused = e.recipients
-        except (socket.error, smtplib.SMTPException) as e:
+        except (OSError, smtplib.SMTPException) as e:
             print('got', e.__class__, file=DEBUGSTREAM)
             # All recipients were refused.  If the exception had an associated
             # error code, use it.  Otherwise,fake it with a non-triggering
diff --git a/Lib/socketserver.py b/Lib/socketserver.py
index 902a5347e1..abc4f02841 100644
--- a/Lib/socketserver.py
+++ b/Lib/socketserver.py
@@ -299,7 +299,7 @@ class BaseServer:
         """
         try:
             request, client_address = self.get_request()
-        except socket.error:
+        except OSError:
             return
         if self.verify_request(request, client_address):
             try:
@@ -479,7 +479,7 @@ class TCPServer(BaseServer):
             #explicitly shutdown.  socket.close() merely releases
             #the socket and waits for GC to perform the actual close.
             request.shutdown(socket.SHUT_WR)
-        except socket.error:
+        except OSError:
             pass #some platforms may raise ENOTCONN here
         self.close_request(request)
 
diff --git a/Lib/ssl.py b/Lib/ssl.py
index 5e5a5ce091..acbc7008f8 100644
--- a/Lib/ssl.py
+++ b/Lib/ssl.py
@@ -109,12 +109,14 @@ else:
     _PROTOCOL_NAMES[PROTOCOL_SSLv2] = "SSLv2"
 
 from socket import getnameinfo as _getnameinfo
-from socket import error as socket_error
 from socket import socket, AF_INET, SOCK_STREAM, create_connection
 import base64        # for DER-to-PEM translation
 import traceback
 import errno
 
+
+socket_error = OSError  # keep that public name in module namespace
+
 if _ssl.HAS_TLS_UNIQUE:
     CHANNEL_BINDING_TYPES = ['tls-unique']
 else:
@@ -279,7 +281,7 @@ class SSLSocket(socket):
             # see if it's connected
             try:
                 sock.getpeername()
-            except socket_error as e:
+            except OSError as e:
                 if e.errno != errno.ENOTCONN:
                     raise
             else:
@@ -305,7 +307,7 @@ class SSLSocket(socket):
                         raise ValueError("do_handshake_on_connect should not be specified for non-blocking sockets")
                     self.do_handshake()
 
-            except socket_error as x:
+            except OSError as x:
                 self.close()
                 raise x
 
@@ -533,7 +535,7 @@ class SSLSocket(socket):
                     self.do_handshake()
                 self._connected = True
             return rc
-        except socket_error:
+        except OSError:
             self._sslobj = None
             raise
 
diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
index b7c57da209..b4b7cd4df3 100644
--- a/Lib/telnetlib.py
+++ b/Lib/telnetlib.py
@@ -273,7 +273,7 @@ class Telnet:
         """Write a string to the socket, doubling any IAC characters.
 
         Can block if the connection is blocked.  May raise
-        socket.error if the connection is closed.
+        OSError if the connection is closed.
 
         """
         if IAC in buffer:
diff --git a/Lib/test/ssl_servers.py b/Lib/test/ssl_servers.py
index 8686153a17..f4a0bed342 100644
--- a/Lib/test/ssl_servers.py
+++ b/Lib/test/ssl_servers.py
@@ -35,7 +35,7 @@ class HTTPSServer(_HTTPServer):
         try:
             sock, addr = self.socket.accept()
             sslconn = self.context.wrap_socket(sock, server_side=True)
-        except socket.error as e:
+        except OSError as e:
             # socket errors are silenced by the caller, print them here
             if support.verbose:
                 sys.stderr.write("Got an error:\n%s\n" % e)
diff --git a/Lib/test/support.py b/Lib/test/support.py
index b98f2bf423..d776b99627 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -496,7 +496,7 @@ def find_unused_port(family=socket.AF_INET, socktype=socket.SOCK_STREAM):
     the SO_REUSEADDR socket option having different semantics on Windows versus
     Unix/Linux.  On Unix, you can't have two AF_INET SOCK_STREAM sockets bind,
     listen and then accept connections on identical host/ports.  An EADDRINUSE
-    socket.error will be raised at some point (depending on the platform and
+    OSError will be raised at some point (depending on the platform and
     the order bind and listen were called on each socket).
 
     However, on Windows, if SO_REUSEADDR is set on the sockets, no EADDRINUSE
@@ -570,7 +570,7 @@ def _is_ipv6_enabled():
             sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
             sock.bind(('::1', 0))
             return True
-        except (socket.error, socket.gaierror):
+        except OSError:
             pass
         finally:
             if sock:
@@ -1098,7 +1098,7 @@ class TransientResource(object):
 # with the Internet connection manifest themselves as exceptions.
 # XXX deprecate these and use transient_internet() instead
 time_out = TransientResource(IOError, errno=errno.ETIMEDOUT)
-socket_peer_reset = TransientResource(socket.error, errno=errno.ECONNRESET)
+socket_peer_reset = TransientResource(OSError, errno=errno.ECONNRESET)
 ioerror_peer_reset = TransientResource(IOError, errno=errno.ECONNRESET)
 
 
diff --git a/Lib/test/test_asyncore.py b/Lib/test/test_asyncore.py
index 42a25255ae..bdb3dc0c45 100644
--- a/Lib/test/test_asyncore.py
+++ b/Lib/test/test_asyncore.py
@@ -756,7 +756,7 @@ class BaseTestAPI(unittest.TestCase):
         s2 = asyncore.dispatcher()
         s2.create_socket(self.family)
         # EADDRINUSE indicates the socket was correctly bound
-        self.assertRaises(socket.error, s2.bind, (self.addr[0], port))
+        self.assertRaises(OSError, s2.bind, (self.addr[0], port))
 
     def test_set_reuse_addr(self):
         if HAS_UNIX_SOCKETS and self.family == socket.AF_UNIX:
@@ -764,7 +764,7 @@ class BaseTestAPI(unittest.TestCase):
         sock = socket.socket(self.family)
         try:
             sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-        except socket.error:
+        except OSError:
             unittest.skip("SO_REUSEADDR not supported on this platform")
         else:
             # if SO_REUSEADDR succeeded for sock we expect asyncore
@@ -797,7 +797,7 @@ class BaseTestAPI(unittest.TestCase):
                          struct.pack('ii', 1, 0))
             try:
                 s.connect(server.address)
-            except socket.error:
+            except OSError:
                 pass
             finally:
                 s.close()
diff --git a/Lib/test/test_epoll.py b/Lib/test/test_epoll.py
index b9b1492862..a3d4e2d9e2 100644
--- a/Lib/test/test_epoll.py
+++ b/Lib/test/test_epoll.py
@@ -56,7 +56,7 @@ class TestEPoll(unittest.TestCase):
         client.setblocking(False)
         try:
             client.connect(('127.0.0.1', self.serverSocket.getsockname()[1]))
-        except socket.error as e:
+        except OSError as e:
             self.assertEqual(e.args[0], errno.EINPROGRESS)
         else:
             raise AssertionError("Connect should have raised EINPROGRESS")
diff --git a/Lib/test/test_ftplib.py b/Lib/test/test_ftplib.py
index 299a146991..bdfefa4ea8 100644
--- a/Lib/test/test_ftplib.py
+++ b/Lib/test/test_ftplib.py
@@ -321,7 +321,7 @@ if ssl is not None:
                 elif err.args[0] == ssl.SSL_ERROR_EOF:
                     return self.handle_close()
                 raise
-            except socket.error as err:
+            except OSError as err:
                 if err.args[0] == errno.ECONNABORTED:
                     return self.handle_close()
             else:
@@ -335,7 +335,7 @@ if ssl is not None:
                 if err.args[0] in (ssl.SSL_ERROR_WANT_READ,
                                    ssl.SSL_ERROR_WANT_WRITE):
                     return
-            except socket.error as err:
+            except OSError as err:
                 # Any "socket error" corresponds to a SSL_ERROR_SYSCALL return
                 # from OpenSSL's SSL_shutdown(), corresponding to a
                 # closed socket condition. See also:
@@ -676,7 +676,7 @@ class TestFTPClass(TestCase):
                 return False
             try:
                 self.client.sendcmd('noop')
-            except (socket.error, EOFError):
+            except (OSError, EOFError):
                 return False
             return True
 
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 5ebcfcb939..9c53e9c7ba 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -45,7 +45,7 @@ class EPipeSocket(FakeSocket):
 
     def sendall(self, data):
         if self.pipe_trigger in data:
-            raise socket.error(errno.EPIPE, "gotcha")
+            raise OSError(errno.EPIPE, "gotcha")
         self.data += data
 
     def close(self):
@@ -515,7 +515,7 @@ class BasicTest(TestCase):
             b"Content-Length")
         conn = client.HTTPConnection("example.com")
         conn.sock = sock
-        self.assertRaises(socket.error,
+        self.assertRaises(OSError,
                           lambda: conn.request("PUT", "/url", "body"))
         resp = conn.getresponse()
         self.assertEqual(401, resp.status)
diff --git a/Lib/test/test_kqueue.py b/Lib/test/test_kqueue.py
index 4e9301307c..6312ddd83e 100644
--- a/Lib/test/test_kqueue.py
+++ b/Lib/test/test_kqueue.py
@@ -94,7 +94,7 @@ class TestKQueue(unittest.TestCase):
         client.setblocking(False)
         try:
             client.connect(('127.0.0.1', serverSocket.getsockname()[1]))
-        except socket.error as e:
+        except OSError as e:
             self.assertEqual(e.args[0], errno.EINPROGRESS)
         else:
             #raise AssertionError("Connect should have raised EINPROGRESS")
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index 9b760555b4..d8ce3159e4 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -569,7 +569,7 @@ class HandlerTest(BaseTest):
                 self.assertEqual(h.facility, h.LOG_USER)
                 self.assertTrue(h.unixsocket)
                 h.close()
-            except socket.error: # syslogd might not be available
+            except OSError: # syslogd might not be available
                 pass
         for method in ('GET', 'POST', 'PUT'):
             if method == 'PUT':
@@ -679,7 +679,7 @@ if threading:
             self.num_bytes = 0
             try:
                 self.peer = conn.getpeername()
-            except socket.error as err:
+            except OSError as err:
                 # a race condition  may occur if the other end is closing
                 # before we can get the peername
                 self.close()
@@ -880,7 +880,7 @@ if threading:
                 sock, addr = self.socket.accept()
                 if self.sslctx:
                     sock = self.sslctx.wrap_socket(sock, server_side=True)
-            except socket.error as e:
+            except OSError as e:
                 # socket errors are silenced by the caller, print them here
                 sys.stderr.write("Got an error:\n%s\n" % e)
                 raise
@@ -946,7 +946,7 @@ if threading:
                     if data:
                         try:
                             super(DelegatingUDPRequestHandler, self).finish()
-                        except socket.error:
+                        except OSError:
                             if not self.server._closed:
                                 raise
 
diff --git a/Lib/test/test_nntplib.py b/Lib/test/test_nntplib.py
index 19fb10a9c7..7cf497ac1c 100644
--- a/Lib/test/test_nntplib.py
+++ b/Lib/test/test_nntplib.py
@@ -264,7 +264,7 @@ class NetworkedNNTPTestsMixin:
                 return False
             try:
                 server.help()
-            except (socket.error, EOFError):
+            except (OSError, EOFError):
                 return False
             return True
 
diff --git a/Lib/test/test_poplib.py b/Lib/test/test_poplib.py
index e85dd2a870..935848bc5f 100644
--- a/Lib/test/test_poplib.py
+++ b/Lib/test/test_poplib.py
@@ -167,7 +167,7 @@ class DummyPOP3Handler(asynchat.async_chat):
                 elif err.args[0] == ssl.SSL_ERROR_EOF:
                     return self.handle_close()
                 raise
-            except socket.error as err:
+            except OSError as err:
                 if err.args[0] == errno.ECONNABORTED:
                     return self.handle_close()
             else:
diff --git a/Lib/test/test_smtplib.py b/Lib/test/test_smtplib.py
index 5a086c88f1..e475076dd9 100644
--- a/Lib/test/test_smtplib.py
+++ b/Lib/test/test_smtplib.py
@@ -535,7 +535,7 @@ class NonConnectingTests(unittest.TestCase):
                           smtp.send, 'test msg')
 
     def testNonnumericPort(self):
-        # check that non-numeric port raises socket.error
+        # check that non-numeric port raises OSError
         self.assertRaises(OSError, smtplib.SMTP,
                           "localhost", "bogus")
         self.assertRaises(OSError, smtplib.SMTP,
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 0ce97295fd..c0ccb5d96d 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -46,7 +46,7 @@ def _have_socket_can():
     """Check whether CAN sockets are supported on this host."""
     try:
         s = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
-    except (AttributeError, socket.error, OSError):
+    except (AttributeError, OSError):
         return False
     else:
         s.close()
@@ -126,7 +126,7 @@ class SocketCANTest(unittest.TestCase):
         self.addCleanup(self.s.close)
         try:
             self.s.bind((self.interface,))
-        except socket.error:
+        except OSError:
             self.skipTest('network interface `%s` does not exist' %
                            self.interface)
 
@@ -295,7 +295,7 @@ class ThreadedCANSocketTest(SocketCANTest, ThreadableTest):
         self.cli = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
         try:
             self.cli.bind((self.interface,))
-        except socket.error:
+        except OSError:
             # skipTest should not be called here, and will be called in the
             # server instead
             pass
@@ -608,7 +608,7 @@ def requireSocket(*args):
                     for obj in args]
         try:
             s = socket.socket(*callargs)
-        except socket.error as e:
+        except OSError as e:
             # XXX: check errno?
             err = str(e)
         else:
@@ -645,11 +645,11 @@ class GeneralModuleTests(unittest.TestCase):
     def testSocketError(self):
         # Testing socket module exceptions
         msg = "Error raising socket exception (%s)."
-        with self.assertRaises(socket.error, msg=msg % 'socket.error'):
-            raise socket.error
-        with self.assertRaises(socket.error, msg=msg % 'socket.herror'):
+        with self.assertRaises(OSError, msg=msg % 'OSError'):
+            raise OSError
+        with self.assertRaises(OSError, msg=msg % 'socket.herror'):
             raise socket.herror
-        with self.assertRaises(socket.error, msg=msg % 'socket.gaierror'):
+        with self.assertRaises(OSError, msg=msg % 'socket.gaierror'):
             raise socket.gaierror
 
     def testSendtoErrors(self):
@@ -712,13 +712,13 @@ class GeneralModuleTests(unittest.TestCase):
         hostname = socket.gethostname()
         try:
             ip = socket.gethostbyname(hostname)
-        except socket.error:
+        except OSError:
             # Probably name lookup wasn't set up right; skip this test
             return
         self.assertTrue(ip.find('.') >= 0, "Error resolving host to ip.")
         try:
             hname, aliases, ipaddrs = socket.gethostbyaddr(ip)
-        except socket.error:
+        except OSError:
             # Probably a similar problem as above; skip this test
             return
         all_host_names = [hostname, hname] + aliases
@@ -732,7 +732,7 @@ class GeneralModuleTests(unittest.TestCase):
         oldhn = socket.gethostname()
         try:
             socket.sethostname('new')
-        except socket.error as e:
+        except OSError as e:
             if e.errno == errno.EPERM:
                 self.skipTest("test should be run as root")
             else:
@@ -766,8 +766,8 @@ class GeneralModuleTests(unittest.TestCase):
                          'socket.if_nameindex() not available.')
     def testInvalidInterfaceNameIndex(self):
         # test nonexistent interface index/name
-        self.assertRaises(socket.error, socket.if_indextoname, 0)
-        self.assertRaises(socket.error, socket.if_nametoindex, '_DEADBEEF')
+        self.assertRaises(OSError, socket.if_indextoname, 0)
+        self.assertRaises(OSError, socket.if_nametoindex, '_DEADBEEF')
         # test with invalid values
         self.assertRaises(TypeError, socket.if_nametoindex, 0)
         self.assertRaises(TypeError, socket.if_indextoname, '_DEADBEEF')
@@ -788,7 +788,7 @@ class GeneralModuleTests(unittest.TestCase):
         try:
             # On some versions, this crashes the interpreter.
             socket.getnameinfo(('x', 0, 0, 0), 0)
-        except socket.error:
+        except OSError:
             pass
 
     def testNtoH(self):
@@ -835,17 +835,17 @@ class GeneralModuleTests(unittest.TestCase):
             try:
                 port = socket.getservbyname(service, 'tcp')
                 break
-            except socket.error:
+            except OSError:
                 pass
         else:
-            raise socket.error
+            raise OSError
         # Try same call with optional protocol omitted
         port2 = socket.getservbyname(service)
         eq(port, port2)
         # Try udp, but don't barf it it doesn't exist
         try:
             udpport = socket.getservbyname(service, 'udp')
-        except socket.error:
+        except OSError:
             udpport = None
         else:
             eq(udpport, port)
@@ -901,7 +901,7 @@ class GeneralModuleTests(unittest.TestCase):
         g = lambda a: inet_pton(AF_INET, a)
 
         assertInvalid = lambda func,a: self.assertRaises(
-            (socket.error, ValueError), func, a
+            (OSError, ValueError), func, a
         )
 
         self.assertEqual(b'\x00\x00\x00\x00', f('0.0.0.0'))
@@ -936,7 +936,7 @@ class GeneralModuleTests(unittest.TestCase):
             return
         f = lambda a: inet_pton(AF_INET6, a)
         assertInvalid = lambda a: self.assertRaises(
-            (socket.error, ValueError), f, a
+            (OSError, ValueError), f, a
         )
 
         self.assertEqual(b'\x00' * 16, f('::'))
@@ -985,7 +985,7 @@ class GeneralModuleTests(unittest.TestCase):
         from socket import inet_ntoa as f, inet_ntop, AF_INET
         g = lambda a: inet_ntop(AF_INET, a)
         assertInvalid = lambda func,a: self.assertRaises(
-            (socket.error, ValueError), func, a
+            (OSError, ValueError), func, a
         )
 
         self.assertEqual('1.0.1.0', f(b'\x01\x00\x01\x00'))
@@ -1014,7 +1014,7 @@ class GeneralModuleTests(unittest.TestCase):
             return
         f = lambda a: inet_ntop(AF_INET6, a)
         assertInvalid = lambda a: self.assertRaises(
-            (socket.error, ValueError), f, a
+            (OSError, ValueError), f, a
         )
 
         self.assertEqual('::', f(b'\x00' * 16))
@@ -1042,7 +1042,7 @@ class GeneralModuleTests(unittest.TestCase):
         # At least for eCos.  This is required for the S/390 to pass.
         try:
             my_ip_addr = socket.gethostbyname(socket.gethostname())
-        except socket.error:
+        except OSError:
             # Probably name lookup wasn't set up right; skip this test
             return
         self.assertIn(name[0], ("0.0.0.0", my_ip_addr), '%s invalid' % name[0])
@@ -1069,7 +1069,7 @@ class GeneralModuleTests(unittest.TestCase):
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         sock.settimeout(1)
         sock.close()
-        self.assertRaises(socket.error, sock.send, b"spam")
+        self.assertRaises(OSError, sock.send, b"spam")
 
     def testNewAttributes(self):
         # testing .family, .type and .protocol
@@ -1168,7 +1168,7 @@ class GeneralModuleTests(unittest.TestCase):
 
     def test_getnameinfo(self):
         # only IP addresses are allowed
-        self.assertRaises(socket.error, socket.getnameinfo, ('mail.python.org',0), 0)
+        self.assertRaises(OSError, socket.getnameinfo, ('mail.python.org',0), 0)
 
     @unittest.skipUnless(support.is_resource_enabled('network'),
                          'network is not enabled')
@@ -1296,7 +1296,7 @@ class BasicCANTest(unittest.TestCase):
     def testTooLongInterfaceName(self):
         # most systems limit IFNAMSIZ to 16, take 1024 to be sure
         with socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW) as s:
-            self.assertRaisesRegex(socket.error, 'interface name too long',
+            self.assertRaisesRegex(OSError, 'interface name too long',
                                    s.bind, ('x' * 1024,))
 
     @unittest.skipUnless(hasattr(socket, "CAN_RAW_LOOPBACK"),
@@ -1591,7 +1591,7 @@ class BasicTCPTest(SocketConnectedTest):
         self.assertEqual(f, fileno)
         # cli_conn cannot be used anymore...
         self.assertTrue(self.cli_conn._closed)
-        self.assertRaises(socket.error, self.cli_conn.recv, 1024)
+        self.assertRaises(OSError, self.cli_conn.recv, 1024)
         self.cli_conn.close()
         # ...but we can create another socket using the (still open)
         # file descriptor
@@ -1960,7 +1960,7 @@ class SendmsgTests(SendrecvmsgServerTimeoutBase):
     def _testSendmsgExcessCmsgReject(self):
         if not hasattr(socket, "CMSG_SPACE"):
             # Can only send one item
-            with self.assertRaises(socket.error) as cm:
+            with self.assertRaises(OSError) as cm:
                 self.sendmsgToServer([MSG], [(0, 0, b""), (0, 0, b"")])
             self.assertIsNone(cm.exception.errno)
         self.sendToServer(b"done")
@@ -1971,7 +1971,7 @@ class SendmsgTests(SendrecvmsgServerTimeoutBase):
 
     def _testSendmsgAfterClose(self):
         self.cli_sock.close()
-        self.assertRaises(socket.error, self.sendmsgToServer, [MSG])
+        self.assertRaises(OSError, self.sendmsgToServer, [MSG])
 
 
 class SendmsgStreamTests(SendmsgTests):
@@ -2015,7 +2015,7 @@ class SendmsgStreamTests(SendmsgTests):
     @testSendmsgDontWait.client_skip
     def _testSendmsgDontWait(self):
         try:
-            with self.assertRaises(socket.error) as cm:
+            with self.assertRaises(OSError) as cm:
                 while True:
                     self.sendmsgToServer([b"a"*512], [], socket.MSG_DONTWAIT)
             self.assertIn(cm.exception.errno,
@@ -2035,9 +2035,9 @@ class SendmsgConnectionlessTests(SendmsgTests):
         pass
 
     def _testSendmsgNoDestAddr(self):
-        self.assertRaises(socket.error, self.cli_sock.sendmsg,
+        self.assertRaises(OSError, self.cli_sock.sendmsg,
                           [MSG])
-        self.assertRaises(socket.error, self.cli_sock.sendmsg,
+        self.assertRaises(OSError, self.cli_sock.sendmsg,
                           [MSG], [], 0, None)
 
 
@@ -2123,7 +2123,7 @@ class RecvmsgGenericTests(SendrecvmsgBase):
     def testRecvmsgAfterClose(self):
         # Check that recvmsg[_into]() fails on a closed socket.
         self.serv_sock.close()
-        self.assertRaises(socket.error, self.doRecvmsg, self.serv_sock, 1024)
+        self.assertRaises(OSError, self.doRecvmsg, self.serv_sock, 1024)
 
     def _testRecvmsgAfterClose(self):
         pass
@@ -2571,7 +2571,7 @@ class SCMRightsTest(SendrecvmsgServerTimeoutBase):
         # call fails, just send msg with no ancillary data.
         try:
             nbytes = self.sendmsgToServer([msg], ancdata)
-        except socket.error as e:
+        except OSError as e:
             # Check that it was the system call that failed
             self.assertIsInstance(e.errno, int)
             nbytes = self.sendmsgToServer([msg])
@@ -2949,7 +2949,7 @@ class RFC3542AncillaryTest(SendrecvmsgServerTimeoutBase):
                   array.array("i", [self.traffic_class]).tobytes() + b"\x00"),
                  (socket.IPPROTO_IPV6, socket.IPV6_HOPLIMIT,
                   array.array("i", [self.hop_limit]))])
-        except socket.error as e:
+        except OSError as e:
             self.assertIsInstance(e.errno, int)
             nbytes = self.sendmsgToServer(
                 [MSG],
@@ -3396,10 +3396,10 @@ class InterruptedRecvTimeoutTest(InterruptedTimeoutBase, UDPTestBase):
         self.serv.settimeout(self.timeout)
 
     def checkInterruptedRecv(self, func, *args, **kwargs):
-        # Check that func(*args, **kwargs) raises socket.error with an
+        # Check that func(*args, **kwargs) raises OSError with an
         # errno of EINTR when interrupted by a signal.
         self.setAlarm(self.alarm_time)
-        with self.assertRaises(socket.error) as cm:
+        with self.assertRaises(OSError) as cm:
             func(*args, **kwargs)
         self.assertNotIsInstance(cm.exception, socket.timeout)
         self.assertEqual(cm.exception.errno, errno.EINTR)
@@ -3456,9 +3456,9 @@ class InterruptedSendTimeoutTest(InterruptedTimeoutBase,
 
     def checkInterruptedSend(self, func, *args, **kwargs):
         # Check that func(*args, **kwargs), run in a loop, raises
-        # socket.error with an errno of EINTR when interrupted by a
+        # OSError with an errno of EINTR when interrupted by a
         # signal.
-        with self.assertRaises(socket.error) as cm:
+        with self.assertRaises(OSError) as cm:
             while True:
                 self.setAlarm(self.alarm_time)
                 func(*args, **kwargs)
@@ -3552,7 +3552,7 @@ class NonBlockingTCPTests(ThreadedTCPSocketTest):
         start = time.time()
         try:
             self.serv.accept()
-        except socket.error:
+        except OSError:
             pass
         end = time.time()
         self.assertTrue((end - start) < 1.0, "Error setting non-blocking mode.")
@@ -3573,7 +3573,7 @@ class NonBlockingTCPTests(ThreadedTCPSocketTest):
             start = time.time()
             try:
                 self.serv.accept()
-            except socket.error:
+            except OSError:
                 pass
             end = time.time()
             self.assertTrue((end - start) < 1.0, "Error creating with non-blocking mode.")
@@ -3603,7 +3603,7 @@ class NonBlockingTCPTests(ThreadedTCPSocketTest):
         self.serv.setblocking(0)
         try:
             conn, addr = self.serv.accept()
-        except socket.error:
+        except OSError:
             pass
         else:
             self.fail("Error trying to do non-blocking accept.")
@@ -3633,7 +3633,7 @@ class NonBlockingTCPTests(ThreadedTCPSocketTest):
         conn.setblocking(0)
         try:
             msg = conn.recv(len(MSG))
-        except socket.error:
+        except OSError:
             pass
         else:
             self.fail("Error trying to do non-blocking recv.")
@@ -3808,7 +3808,7 @@ class FileObjectClassTestCase(SocketConnectedTest):
         self.read_file.close()
         self.assertRaises(ValueError, self.read_file.fileno)
         self.cli_conn.close()
-        self.assertRaises(socket.error, self.cli_conn.getsockname)
+        self.assertRaises(OSError, self.cli_conn.getsockname)
 
     def _testRealClose(self):
         pass
@@ -3845,7 +3845,7 @@ class FileObjectInterruptedTestCase(unittest.TestCase):
 
     @staticmethod
     def _raise_eintr():
-        raise socket.error(errno.EINTR, "interrupted")
+        raise OSError(errno.EINTR, "interrupted")
 
     def _textiowrap_mock_socket(self, mock, buffering=-1):
         raw = socket.SocketIO(mock, "r")
@@ -3957,7 +3957,7 @@ class UnbufferedFileObjectClassTestCase(FileObjectClassTestCase):
         self.assertEqual(msg, self.read_msg)
         # ...until the file is itself closed
         self.read_file.close()
-        self.assertRaises(socket.error, self.cli_conn.recv, 1024)
+        self.assertRaises(OSError, self.cli_conn.recv, 1024)
 
     def _testMakefileClose(self):
         self.write_file.write(self.write_msg)
@@ -4106,7 +4106,7 @@ class NetworkConnectionNoServer(unittest.TestCase):
         port = support.find_unused_port()
         cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         self.addCleanup(cli.close)
-        with self.assertRaises(socket.error) as cm:
+        with self.assertRaises(OSError) as cm:
             cli.connect((HOST, port))
         self.assertEqual(cm.exception.errno, errno.ECONNREFUSED)
 
@@ -4114,7 +4114,7 @@ class NetworkConnectionNoServer(unittest.TestCase):
         # Issue #9792: errors raised by create_connection() should have
         # a proper errno attribute.
         port = support.find_unused_port()
-        with self.assertRaises(socket.error) as cm:
+        with self.assertRaises(OSError) as cm:
             socket.create_connection((HOST, port))
 
         # Issue #16257: create_connection() calls getaddrinfo() against
@@ -4262,7 +4262,7 @@ class TCPTimeoutTest(SocketTCPTest):
             foo = self.serv.accept()
         except socket.timeout:
             self.fail("caught timeout instead of error (TCP)")
-        except socket.error:
+        except OSError:
             ok = True
         except:
             self.fail("caught unexpected exception (TCP)")
@@ -4319,7 +4319,7 @@ class UDPTimeoutTest(SocketUDPTest):
             foo = self.serv.recv(1024)
         except socket.timeout:
             self.fail("caught timeout instead of error (UDP)")
-        except socket.error:
+        except OSError:
             ok = True
         except:
             self.fail("caught unexpected exception (UDP)")
@@ -4329,10 +4329,10 @@ class UDPTimeoutTest(SocketUDPTest):
 class TestExceptions(unittest.TestCase):
 
     def testExceptionTree(self):
-        self.assertTrue(issubclass(socket.error, Exception))
-        self.assertTrue(issubclass(socket.herror, socket.error))
-        self.assertTrue(issubclass(socket.gaierror, socket.error))
-        self.assertTrue(issubclass(socket.timeout, socket.error))
+        self.assertTrue(issubclass(OSError, Exception))
+        self.assertTrue(issubclass(socket.herror, OSError))
+        self.assertTrue(issubclass(socket.gaierror, OSError))
+        self.assertTrue(issubclass(socket.timeout, OSError))
 
 class TestLinuxAbstractNamespace(unittest.TestCase):
 
@@ -4358,7 +4358,7 @@ class TestLinuxAbstractNamespace(unittest.TestCase):
     def testNameOverflow(self):
         address = "\x00" + "h" * self.UNIX_PATH_MAX
         with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as s:
-            self.assertRaises(socket.error, s.bind, address)
+            self.assertRaises(OSError, s.bind, address)
 
     def testStrName(self):
         # Check that an abstract name can be passed as a string.
@@ -4597,7 +4597,7 @@ class ContextManagersTest(ThreadedTCPSocketTest):
         self.assertTrue(sock._closed)
         # exception inside with block
         with socket.socket() as sock:
-            self.assertRaises(socket.error, sock.sendall, b'foo')
+            self.assertRaises(OSError, sock.sendall, b'foo')
         self.assertTrue(sock._closed)
 
     def testCreateConnectionBase(self):
@@ -4625,7 +4625,7 @@ class ContextManagersTest(ThreadedTCPSocketTest):
         with socket.create_connection(address) as sock:
             sock.close()
         self.assertTrue(sock._closed)
-        self.assertRaises(socket.error, sock.sendall, b'foo')
+        self.assertRaises(OSError, sock.sendall, b'foo')
 
 
 @unittest.skipUnless(hasattr(socket, "SOCK_CLOEXEC"),
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 74abbd23b3..aa63ee6c6f 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -213,15 +213,15 @@ class BasicSocketTests(unittest.TestCase):
 
     def test_wrapped_unconnected(self):
         # Methods on an unconnected SSLSocket propagate the original
-        # socket.error raise by the underlying socket object.
+        # OSError raise by the underlying socket object.
         s = socket.socket(socket.AF_INET)
         ss = ssl.wrap_socket(s)
-        self.assertRaises(socket.error, ss.recv, 1)
-        self.assertRaises(socket.error, ss.recv_into, bytearray(b'x'))
-        self.assertRaises(socket.error, ss.recvfrom, 1)
-        self.assertRaises(socket.error, ss.recvfrom_into, bytearray(b'x'), 1)
-        self.assertRaises(socket.error, ss.send, b'x')
-        self.assertRaises(socket.error, ss.sendto, b'x', ('0.0.0.0', 0))
+        self.assertRaises(OSError, ss.recv, 1)
+        self.assertRaises(OSError, ss.recv_into, bytearray(b'x'))
+        self.assertRaises(OSError, ss.recvfrom, 1)
+        self.assertRaises(OSError, ss.recvfrom_into, bytearray(b'x'), 1)
+        self.assertRaises(OSError, ss.send, b'x')
+        self.assertRaises(OSError, ss.sendto, b'x', ('0.0.0.0', 0))
 
     def test_timeout(self):
         # Issue #8524: when creating an SSL socket, the timeout of the
@@ -1012,7 +1012,7 @@ else:
                                 sys.stdout.write(" server: read %r (%s), sending back %r (%s)...\n"
                                                  % (msg, ctype, msg.lower(), ctype))
                             self.write(msg.lower())
-                    except socket.error:
+                    except OSError:
                         if self.server.chatty:
                             handle_error("Test server failure:\n")
                         self.close()
@@ -1122,7 +1122,7 @@ else:
                         return self.handle_close()
                     except ssl.SSLError:
                         raise
-                    except socket.error as err:
+                    except OSError as err:
                         if err.args[0] == errno.ECONNABORTED:
                             return self.handle_close()
                     else:
@@ -1226,9 +1226,9 @@ else:
             except ssl.SSLError as x:
                 if support.verbose:
                     sys.stdout.write("\nSSLError is %s\n" % x.args[1])
-            except socket.error as x:
+            except OSError as x:
                 if support.verbose:
-                    sys.stdout.write("\nsocket.error is %s\n" % x.args[1])
+                    sys.stdout.write("\nOSError is %s\n" % x.args[1])
             except IOError as x:
                 if x.errno != errno.ENOENT:
                     raise
@@ -1313,7 +1313,7 @@ else:
         except ssl.SSLError:
             if expect_success:
                 raise
-        except socket.error as e:
+        except OSError as e:
             if expect_success or e.errno != errno.ECONNRESET:
                 raise
         else:
@@ -1458,7 +1458,7 @@ else:
             if hasattr(ssl, 'PROTOCOL_SSLv2'):
                 try:
                     try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv2, True)
-                except (ssl.SSLError, socket.error) as x:
+                except OSError as x:
                     # this fails on some older versions of OpenSSL (0.9.7l, for instance)
                     if support.verbose:
                         sys.stdout.write(
@@ -1844,7 +1844,7 @@ else:
                                     chatty=False) as server:
                 with socket.socket() as sock:
                     s = context.wrap_socket(sock)
-                    with self.assertRaises((OSError, ssl.SSLError)):
+                    with self.assertRaises(OSError):
                         s.connect((HOST, server.port))
             self.assertIn("no shared cipher", str(server.conn_errors[0]))
 
diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index 33042eda16..f296aa49e6 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -344,7 +344,7 @@ class MockHTTPClass:
             self.data = body
         if self.raise_on_endheaders:
             import socket
-            raise socket.error()
+            raise OSError()
     def getresponse(self):
         return MockHTTPResponse(MockFile(), {}, 200, "OK")
 
@@ -845,7 +845,7 @@ class HandlerTests(unittest.TestCase):
                               ("Foo", "bar"), ("Spam", "eggs")])
             self.assertEqual(http.data, data)
 
-        # check socket.error converted to URLError
+        # check OSError converted to URLError
         http.raise_on_endheaders = True
         self.assertRaises(urllib.error.URLError, h.do_open, http, req)
 
diff --git a/Lib/test/test_xmlrpc.py b/Lib/test/test_xmlrpc.py
index 16f85c5555..817cbd89c6 100644
--- a/Lib/test/test_xmlrpc.py
+++ b/Lib/test/test_xmlrpc.py
@@ -215,7 +215,7 @@ class XMLRPCTestCase(unittest.TestCase):
             xmlrpc.client.ServerProxy('https://localhost:9999').bad_function()
         except NotImplementedError:
             self.assertFalse(has_ssl, "xmlrpc client's error with SSL support")
-        except socket.error:
+        except OSError:
             self.assertTrue(has_ssl)
 
 class HelperTestCase(unittest.TestCase):
@@ -492,7 +492,7 @@ def is_unavailable_exception(e):
             return True
         exc_mess = e.headers.get('X-exception')
     except AttributeError:
-        # Ignore socket.errors here.
+        # Ignore OSErrors here.
         exc_mess = str(e)
 
     if exc_mess and 'temporarily unavailable' in exc_mess.lower():
@@ -507,7 +507,7 @@ def make_request_and_skipIf(condition, reason):
         def make_request_and_skip(self):
             try:
                 xmlrpclib.ServerProxy(URL).my_function()
-            except (xmlrpclib.ProtocolError, socket.error) as e:
+            except (xmlrpclib.ProtocolError, OSError) as e:
                 if not is_unavailable_exception(e):
                     raise
             raise unittest.SkipTest(reason)
@@ -545,7 +545,7 @@ class SimpleServerTestCase(BaseServerTestCase):
         try:
             p = xmlrpclib.ServerProxy(URL)
             self.assertEqual(p.pow(6,8), 6**8)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -558,7 +558,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             p = xmlrpclib.ServerProxy(URL)
             self.assertEqual(p.add(start_string, end_string),
                              start_string + end_string)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -584,7 +584,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             p = xmlrpclib.ServerProxy(URL)
             meth = p.system.listMethods()
             self.assertEqual(set(meth), expected_methods)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -597,7 +597,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             p = xmlrpclib.ServerProxy(URL)
             divhelp = p.system.methodHelp('div')
             self.assertEqual(divhelp, 'This is the div function')
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -611,7 +611,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             p = xmlrpclib.ServerProxy(URL)
             myfunction = p.system.methodHelp('my_function')
             self.assertEqual(myfunction, 'This is my function')
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -624,7 +624,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             p = xmlrpclib.ServerProxy(URL)
             divsig = p.system.methodSignature('div')
             self.assertEqual(divsig, 'signatures not supported')
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -641,7 +641,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             self.assertEqual(add_result, 2+3)
             self.assertEqual(pow_result, 6**8)
             self.assertEqual(div_result, 127//42)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -662,7 +662,7 @@ class SimpleServerTestCase(BaseServerTestCase):
             self.assertEqual(result.results[0]['faultString'],
                 '<class \'Exception\'>:method "this_is_not_exists" '
                 'is not supported')
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -915,7 +915,7 @@ class FailingServerTestCase(unittest.TestCase):
         try:
             p = xmlrpclib.ServerProxy(URL)
             self.assertEqual(p.pow(6,8), 6**8)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e):
                 # protocol error; provide additional information in test output
@@ -928,7 +928,7 @@ class FailingServerTestCase(unittest.TestCase):
         try:
             p = xmlrpclib.ServerProxy(URL)
             p.pow(6,8)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e) and hasattr(e, "headers"):
                 # The two server-side error headers shouldn't be sent back in this case
@@ -948,7 +948,7 @@ class FailingServerTestCase(unittest.TestCase):
         try:
             p = xmlrpclib.ServerProxy(URL)
             p.pow(6,8)
-        except (xmlrpclib.ProtocolError, socket.error) as e:
+        except (xmlrpclib.ProtocolError, OSError) as e:
             # ignore failures due to non-blocking socket 'unavailable' errors
             if not is_unavailable_exception(e) and hasattr(e, "headers"):
                 # We should get error info in the response
diff --git a/Lib/test/test_xmlrpc_net.py b/Lib/test/test_xmlrpc_net.py
index dfb5f9aa3d..457e3fb32b 100644
--- a/Lib/test/test_xmlrpc_net.py
+++ b/Lib/test/test_xmlrpc_net.py
@@ -18,7 +18,7 @@ class CurrentTimeTest(unittest.TestCase):
         server = xmlrpclib.ServerProxy("http://time.xmlrpc.com/RPC2")
         try:
             t0 = server.currentTime.getCurrentTime()
-        except socket.error as e:
+        except OSError as e:
             self.skipTest("network error: %s" % e)
             return
 
@@ -42,7 +42,7 @@ class CurrentTimeTest(unittest.TestCase):
         server = xmlrpclib.ServerProxy("http://buildbot.python.org/all/xmlrpc/")
         try:
             builders = server.getAllBuilders()
-        except socket.error as e:
+        except OSError as e:
             self.skipTest("network error: %s" % e)
             return
         self.addCleanup(lambda: server('close')())
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index d8439b3a42..6757bc6158 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1275,7 +1275,7 @@ class AbstractHTTPHandler(BaseHandler):
 
         try:
             h.request(req.get_method(), req.selector, req.data, headers)
-        except socket.error as err: # timeout error
+        except OSError as err: # timeout error
             h.close()
             raise URLError(err)
         else:
@@ -1480,7 +1480,7 @@ class FTPHandler(BaseHandler):
 
         try:
             host = socket.gethostbyname(host)
-        except socket.error as msg:
+        except OSError as msg:
             raise URLError(msg)
         path, attrs = splitattr(req.selector)
         dirs = path.split('/')
@@ -1721,7 +1721,7 @@ class URLopener:
                 return getattr(self, name)(url, data)
         except (HTTPError, URLError):
             raise
-        except socket.error as msg:
+        except OSError as msg:
             raise IOError('socket error', msg).with_traceback(sys.exc_info()[2])
 
     def open_unknown(self, fullurl, data=None):
@@ -2487,7 +2487,7 @@ def _proxy_bypass_macosx_sysconf(host, proxy_settings):
                 try:
                     hostIP = socket.gethostbyname(hostonly)
                     hostIP = ip2num(hostIP)
-                except socket.error:
+                except OSError:
                     continue
 
             base = ip2num(m.group(1))
@@ -2614,13 +2614,13 @@ elif os.name == 'nt':
             addr = socket.gethostbyname(rawHost)
             if addr != rawHost:
                 host.append(addr)
-        except socket.error:
+        except OSError:
             pass
         try:
             fqdn = socket.getfqdn(rawHost)
             if fqdn != rawHost:
                 host.append(fqdn)
-        except socket.error:
+        except OSError:
             pass
         # make a check value list from the registry entry: replace the
         # '<local>' string by the localhost entry and the corresponding
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index 8ebfa3c55c..691f7db175 100644
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -418,7 +418,7 @@ class Grail(BaseBrowser):
             # need to PING each one until we find one that's live
             try:
                 s.connect(fn)
-            except socket.error:
+            except OSError:
                 # no good; attempt to clean it out, but don't fail:
                 try:
                     os.unlink(fn)
diff --git a/Lib/xmlrpc/client.py b/Lib/xmlrpc/client.py
index d7b2db3725..a2e8e337a7 100644
--- a/Lib/xmlrpc/client.py
+++ b/Lib/xmlrpc/client.py
@@ -1130,8 +1130,9 @@ class Transport:
         for i in (0, 1):
             try:
                 return self.single_request(host, handler, request_body, verbose)
-            except socket.error as e:
-                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
+            except OSError as e:
+                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED,
+                                        errno.EPIPE):
                     raise
             except http.client.BadStatusLine: #close after we sent request
                 if i: