gdb: re-format Python files using black 21.4b0users/simark/black

Re-format all Python files using black [1] version 21.4b0.

This specific version (currently the latest) can be installed using:

    $ pip3 install 'black == 21.4b0'

All you need to do to re-format files is run `black <file/directory>`,
and black will re-format any Python file it finds in there.  It runs
quite fast, so the simplest is probably to do:

    $ black gdb/

from the top-level.

Change-Id: I28588a22c2406afd6bc2703774ddfff47cd61919

1 files changed, 14 insertions, 12 deletions

diff --git a/gdb/testsuite/gdb.python/py-mi-events-gdb.py b/gdb/testsuite/gdb.python/py-mi-events-gdb.py
index f1726fc958b..c60bab2ab36 100644
--- a/gdb/testsuite/gdb.python/py-mi-events-gdb.py
+++ b/gdb/testsuite/gdb.python/py-mi-events-gdb.py
@@ -22,31 +22,33 @@ import gdb
 stop_handler_str = ""
 cont_handler_str = ""
 
-def signal_stop_handler (event):
+
+def signal_stop_handler(event):
     """Stop event handler"""
-    assert (isinstance (event, gdb.StopEvent))
+    assert isinstance(event, gdb.StopEvent)
     global stop_handler_str
     stop_handler_str = "stop_handler\n"
     stop_handler_str += gdb.execute("info break", False, True)
 
 
-def continue_handler (event):
+def continue_handler(event):
     """Continue event handler"""
-    assert (isinstance (event, gdb.ContinueEvent))
+    assert isinstance(event, gdb.ContinueEvent)
     global cont_handler_str
     cont_handler_str = "continue_handler\n"
     cont_handler_str += gdb.execute("info break", False, True)
 
 
-class test_events (gdb.Command):
+class test_events(gdb.Command):
     """Test events."""
 
-    def __init__ (self):
-        gdb.Command.__init__ (self, "test-events", gdb.COMMAND_STACK)
+    def __init__(self):
+        gdb.Command.__init__(self, "test-events", gdb.COMMAND_STACK)
+
+    def invoke(self, arg, from_tty):
+        gdb.events.stop.connect(signal_stop_handler)
+        gdb.events.cont.connect(continue_handler)
+        print("Event testers registered.")
 
-    def invoke (self, arg, from_tty):
-        gdb.events.stop.connect (signal_stop_handler)
-        gdb.events.cont.connect (continue_handler)
-        print ("Event testers registered.")
 
-test_events ()
+test_events()