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gh-122272: guarantee specifiers %F and %C for datetime.strftime to be 0-padded #122436

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Merged
serhiy-storchaka merged 11 commits into from
Aug 23, 2024
Merged

gh-122272: guarantee specifiers %F and %C for datetime.strftime to be 0-padded #122436

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61c2c61
gh-122272: guarantee specifiers %F and %C for datetime.strftime to be…
blhsing Jul 30, 2024
8dc1100
removed trailing spaces
blhsing Jul 30, 2024
f85cd69
📜🤖 Added by blurb_it.
blurb-it[bot] Jul 30, 2024
2fd7093
handle %C and %F only when the C library supports them (at least C99)
blhsing Jul 30, 2024
8fe9521
use autoconf instead to test if c99-specific specifiers are supported
blhsing Jul 30, 2024
4e1ea89
generate header
blhsing Jul 30, 2024
bfd2f18
corrected logics of checks for c99 support
blhsing Jul 30, 2024
fd8dd30
allocate 6 more bytes for the formatted date buffer only when %F is s…
blhsing Jul 31, 2024
3e36832
pass through month and day to time.strftime for %F; made _supports_c9…
blhsing Aug 16, 2024
3530288
validate timetuple as a tuple; cache result of _can_support_c99 upon …
blhsing Aug 22, 2024
c9c51d7
use PySequence_GetItem instead of PyTuple_GetItem for better error ha…
blhsing Aug 23, 2024
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validate timetuple as a tuple; cache result of _can_support_c99 upon … 
…error
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@blhsing
blhsing committed Aug 22, 2024
commit 3530288d42ceffc9222b9ae3983884dd7261a6bb
2 changes: 1 addition & 1 deletion Lib/_pydatetime.py
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Expand Up @@ -223,7 +223,7 @@ def _can_support_c99():
_supports_c99 = (
_time.strftime("%F", (1900, 1, 1, 0, 0, 0, 0, 1, 0)) == "1900-01-01")
except ValueError:
return False
_supports_c99 = False
return _supports_c99

# Correctly substitute for %z and %Z escapes in strftime formats.
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3 changes: 3 additions & 0 deletions Modules/_datetimemodule.c
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Expand Up @@ -1961,6 +1961,9 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
#endif
) {
/* 0-pad year with century as necessary */
if (!PyTuple_Check(timetuple)) {
goto Done;
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}
PyObject *item = PyTuple_GetItem(timetuple, 0);
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if (item == NULL) {
goto Done;
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