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gh-64595: Fix write file logic in Argument Clinic by erlend-aasland · Pull Request #104507 · python/cpython · GitHub
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gh-64595: Fix write file logic in Argument Clinic #104507

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erlend-aasland merged 2 commits into from
May 16, 2023
Merged

gh-64595: Fix write file logic in Argument Clinic #104507

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gh-64595: Fix write file logic in Argument Clinic
erlend-aasland May 15, 2023
2a20f90
Alternative implementation
erlend-aasland May 15, 2023
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Alternative implementation
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@erlend-aasland
erlend-aasland committed May 15, 2023
commit 2a20f908c6b26969a9e76135604a35a7b84d4ccc
17 changes: 7 additions & 10 deletions Tools/clinic/clinic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1975,11 +1975,7 @@ def file_changed(filename: str, new_contents: str) -> bool:
return True


def write_file(filename: str, new_contents: str, force=False):
if not force and not file_changed(filename, new_contents):
# no change: avoid modifying the file modification time
return

def write_file(filename: str, new_contents: str):
# Atomic write using a temporary file and os.replace()
filename_new = f"{filename}.new"
with open(filename_new, "w", encoding="utf-8") as fp:
Expand Down Expand Up @@ -2241,11 +2237,12 @@ def parse_file(filename, *, verify=True, output=None):
clinic = Clinic(language, verify=verify, filename=filename)
src_out, clinic_out = clinic.parse(raw)

# If clinic output changed, force updating the source file as well.
force = any(file_changed(fn, data) for fn, data in clinic_out)
write_file(output, src_out, force=force)
for fn, data in clinic_out:
write_file(fn, data)
changes = [(fn, data) for fn, data in clinic_out if file_changed(fn, data)]
if changes:
# Always (re)write the source file.
write_file(output, src_out)
for fn, data in clinic_out:
write_file(fn, data)


def compute_checksum(input, length=None):
Expand Down