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, 19 insertions, 18 deletions

diff --git a/gdb/testsuite/gdb.python/py-unwind-inline.py b/gdb/testsuite/gdb.python/py-unwind-inline.py
index 4ee52c5..3042472 100644
--- a/gdb/testsuite/gdb.python/py-unwind-inline.py
+++ b/gdb/testsuite/gdb.python/py-unwind-inline.py
@@ -23,49 +23,50 @@ from gdb.unwinder import Unwinder
 
 apb_global = None
 
-class dummy_unwinder (Unwinder):
-    """ A dummy unwinder that looks at a bunch of registers as part of
+
+class dummy_unwinder(Unwinder):
+    """A dummy unwinder that looks at a bunch of registers as part of
     the unwinding process."""
 
-    class frame_id (object):
-        """ Basic frame id."""
+    class frame_id(object):
+        """Basic frame id."""
 
-        def __init__ (self, sp, pc):
-            """ Create the frame id."""
+        def __init__(self, sp, pc):
+            """Create the frame id."""
             self.sp = sp
             self.pc = pc
 
-    def __init__ (self):
+    def __init__(self):
         """Create the unwinder."""
-        Unwinder.__init__ (self, "dummy stack unwinder")
+        Unwinder.__init__(self, "dummy stack unwinder")
         self.void_ptr_t = gdb.lookup_type("void").pointer()
         self.regs = None
 
-    def get_regs (self, pending_frame):
+    def get_regs(self, pending_frame):
         """Return a list of register names that should be read.  Only
         gathers the list once, then caches the result."""
-        if (self.regs != None):
+        if self.regs != None:
             return self.regs
 
         # Collect the names of all registers to read.
-        self.regs = list (pending_frame.architecture ()
-                          .register_names ())
+        self.regs = list(pending_frame.architecture().register_names())
 
         return self.regs
 
-    def __call__ (self, pending_frame):
+    def __call__(self, pending_frame):
         """Actually performs the unwind, or at least sniffs this frame
         to see if the unwinder should claim it, which is never does."""
         try:
-            for r in (self.get_regs (pending_frame)):
-                v = pending_frame.read_register (r).cast (self.void_ptr_t)
+            for r in self.get_regs(pending_frame):
+                v = pending_frame.read_register(r).cast(self.void_ptr_t)
         except:
-            print ("Dummy unwinder, exception")
+            print("Dummy unwinder, exception")
             raise
 
         return None
 
+
 # Register the ComRV stack unwinder.
-gdb.unwinder.register_unwinder (None, dummy_unwinder (), True)
+gdb.unwinder.register_unwinder(None, dummy_unwinder(), True)
 
-print ("Python script imported")
+print("Python script imported")