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-unwind.py b/gdb/testsuite/gdb.python/py-unwind.py
index 2230d5d..931e979 100644
--- a/gdb/testsuite/gdb.python/py-unwind.py
+++ b/gdb/testsuite/gdb.python/py-unwind.py
@@ -16,8 +16,8 @@
 import gdb
 from gdb.unwinder import Unwinder
 
-class FrameId(object):
 
+class FrameId(object):
     def __init__(self, sp, pc):
         self._sp = sp
         self._pc = pc
@@ -30,6 +30,7 @@ class FrameId(object):
     def pc(self):
         return self._pc
 
+
 class TestUnwinder(Unwinder):
     AMD64_RBP = 6
     AMD64_RSP = 7
@@ -42,9 +43,9 @@ class TestUnwinder(Unwinder):
         self._last_arch = None
 
     # Update the register descriptor AMD64_RIP based on ARCH.
-    def _update_register_descriptors (self, arch):
-        if (self._last_arch != arch):
-            TestUnwinder.AMD64_RIP = arch.registers ().find ("rip")
+    def _update_register_descriptors(self, arch):
+        if self._last_arch != arch:
+            TestUnwinder.AMD64_RIP = arch.registers().find("rip")
             self._last_arch = arch
 
     def _read_word(self, address):
@@ -79,12 +80,12 @@ class TestUnwinder(Unwinder):
         # Check that we can access the architecture of the pending
         # frame, and that this is the same architecture as for the
         # currently selected inferior.
-        inf_arch = gdb.selected_inferior ().architecture ()
-        frame_arch = pending_frame.architecture ()
-        if (inf_arch != frame_arch):
-            raise gdb.GdbError ("architecture mismatch")
+        inf_arch = gdb.selected_inferior().architecture()
+        frame_arch = pending_frame.architecture()
+        if inf_arch != frame_arch:
+            raise gdb.GdbError("architecture mismatch")
 
-        self._update_register_descriptors (frame_arch)
+        self._update_register_descriptors(frame_arch)
 
         try:
             # NOTE: the registers in Unwinder API can be referenced
@@ -102,15 +103,16 @@ class TestUnwinder(Unwinder):
 
             frame_id = FrameId(
                 pending_frame.read_register(TestUnwinder.AMD64_RSP),
-                pending_frame.read_register(TestUnwinder.AMD64_RIP))
+                pending_frame.read_register(TestUnwinder.AMD64_RIP),
+            )
             unwind_info = pending_frame.create_unwind_info(frame_id)
-            unwind_info.add_saved_register(TestUnwinder.AMD64_RBP,
-                                           previous_bp)
+            unwind_info.add_saved_register(TestUnwinder.AMD64_RBP, previous_bp)
             unwind_info.add_saved_register("rip", previous_ip)
             unwind_info.add_saved_register("rsp", previous_sp)
             return unwind_info
         except (gdb.error, RuntimeError):
             return None
 
+
 gdb.unwinder.register_unwinder(None, TestUnwinder(), True)
 print("Python script imported")