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PERF: find_stack_level #45247

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Merged
merged 1 commit into from
Jan 7, 2022
Merged

PERF: find_stack_level #45247

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11 changes: 7 additions & 4 deletions pandas/util/_exceptions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,17 +29,20 @@ def find_stack_level() -> int:
Find the first place in the stack that is not inside pandas
(tests notwithstanding).
"""
stack = inspect.stack()

import pandas as pd

pkg_dir = os.path.dirname(pd.__file__)
test_dir = os.path.join(pkg_dir, "tests")

for n in range(len(stack)):
fname = stack[n].filename
# https://stackoverflow.com/questions/17407119/python-inspect-stack-is-slow
frame = inspect.currentframe()
n = 0
while frame:
fname = inspect.getfile(frame)
if fname.startswith(pkg_dir) and not fname.startswith(test_dir):
continue
frame = frame.f_back
n += 1
else:
break
return n