1 files changed, 31 insertions, 14 deletions

diff --git a/tests/misc/sys_settrace_features.py b/tests/misc/sys_settrace_features.py
index 932e430de7..a123044892 100644
--- a/tests/misc/sys_settrace_features.py
+++ b/tests/misc/sys_settrace_features.py
@@ -6,83 +6,100 @@ except AttributeError:
     print("SKIP")
     raise SystemExit
 
+
 def print_stacktrace(frame, level=0):
     # Ignore CPython specific helpers.
-    if frame.f_globals['__name__'].find('importlib') != -1:
+    if frame.f_globals["__name__"].find("importlib") != -1:
         print_stacktrace(frame.f_back, level)
         return
 
-    print("%2d: %s@%s:%s => %s:%d" % (
-        level, "  ",
-        frame.f_globals['__name__'],
-        frame.f_code.co_name,
-        # reduce full path to some pseudo-relative
-        'misc' + ''.join(frame.f_code.co_filename.split('tests/misc')[-1:]),
-        frame.f_lineno,
-    ))
+    print(
+        "%2d: %s@%s:%s => %s:%d"
+        % (
+            level,
+            "  ",
+            frame.f_globals["__name__"],
+            frame.f_code.co_name,
+            # reduce full path to some pseudo-relative
+            "misc" + "".join(frame.f_code.co_filename.split("tests/misc")[-1:]),
+            frame.f_lineno,
+        )
+    )
 
     if frame.f_back:
         print_stacktrace(frame.f_back, level + 1)
 
+
 class _Prof:
-    trace_count = 0;
+    trace_count = 0
 
     def trace_tick(self, frame, event, arg):
         self.trace_count += 1
         print_stacktrace(frame)
 
+
 __prof__ = _Prof()
 
 alice_handler_set = False
+
+
 def trace_tick_handler_alice(frame, event, arg):
     print("### trace_handler::Alice event:", event)
     __prof__.trace_tick(frame, event, arg)
     return trace_tick_handler_alice
 
+
 bob_handler_set = False
+
+
 def trace_tick_handler_bob(frame, event, arg):
     print("### trace_handler::Bob event:", event)
     __prof__.trace_tick(frame, event, arg)
     return trace_tick_handler_bob
 
+
 def trace_tick_handler(frame, event, arg):
     # Ignore CPython specific helpers.
-    if frame.f_globals['__name__'].find('importlib') != -1:
+    if frame.f_globals["__name__"].find("importlib") != -1:
         return
 
     print("### trace_handler::main event:", event)
     __prof__.trace_tick(frame, event, arg)
 
-    if frame.f_code.co_name != 'factorial':
+    if frame.f_code.co_name != "factorial":
         return trace_tick_handler
 
     global alice_handler_set
-    if event == 'call' and not alice_handler_set:
+    if event == "call" and not alice_handler_set:
         alice_handler_set = True
         return trace_tick_handler_alice
 
     global bob_handler_set
-    if event == 'call' and not bob_handler_set:
+    if event == "call" and not bob_handler_set:
         bob_handler_set = True
         return trace_tick_handler_bob
 
     return trace_tick_handler
 
+
 def factorial(n):
     if n == 0:
         return 1
     else:
         return n * factorial(n - 1)
 
+
 def do_tests():
     # These commands are here to demonstrate some execution being traced.
     print("Who loves the sun?")
     print("Not every-", factorial(3))
 
     from sys_settrace_subdir import trace_generic
+
     trace_generic.run_tests()
     return
 
+
 sys.settrace(trace_tick_handler)
 do_tests()
 sys.settrace(None)