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# test sys.settrace with while and for loops
import sys
try:
sys.settrace
except AttributeError:
print("SKIP")
raise SystemExit
def print_stacktrace(frame, level=0):
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)
trace_count = 0
def trace_tick_handler(frame, event, arg):
global trace_count
print("### trace_handler::main event:", event)
trace_count += 1
print_stacktrace(frame)
return trace_tick_handler
def test_loop():
# for loop
r = 0
for i in range(3):
r += i
print("test_for_loop", r)
# while loop
r = 0
i = 0
while i < 3:
r += i
i += 1
print("test_while_loop", i)
sys.settrace(trace_tick_handler)
test_loop()
sys.settrace(None)
print("Total traces executed: ", trace_count)
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