datetime's strftime limits strings to 127 chars

[ericvsmith]

BPO	1556784
Nosy	@birkenfeld, @ericvsmith

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2006-09-30.11:18:03.000>
created_at = <Date 2006-09-12.02:43:32.000>
labels = ['library']
title = "datetime's strftime limits strings to 127 chars"
updated_at = <Date 2006-09-30.11:18:03.000>
user = 'https://github.com/ericvsmith'

bugs.python.org fields:

activity = <Date 2006-09-30.11:18:03.000>
actor = 'georg.brandl'
assignee = 'none'
closed = True
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2006-09-12.02:43:32.000>
creator = 'eric.smith'
dependencies = []
files = []
hgrepos = []
issue_num = 1556784
keywords = []
message_count = 3.0
messages = ['29797', '29798', '29799']
nosy_count = 2.0
nosy_names = ['georg.brandl', 'eric.smith']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue1556784'
versions = ['Python 2.5']

[ericvsmith]

[I'm putting this in category Python Library, because I
assume Extensions Modules is for problems in the
Extensions Module plumbing.]

datetime.date and datetime.time's strftime() methods
call wrap_strftime(), which limits the length of the
format string to 127 chars before calling time.strftime().

This can be seen in the examples below. Note that in
the third example, time.strftime() does not have a
problem with a 128 character format string.

>>> import datetime
>>> datetime.date.today().strftime('x'*128)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
MemoryError


>>> import datetime
>>> datetime.date.today().strftime('x'*256)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
SystemError: Objects/stringobject.c:4077: bad argument
to internal function


>>> import time
>>> time.strftime('x'*128)
'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

Reproduced on 2.5c1 Linux, 2.4.3 Linux, and 2.3.3 Windows.

[ericvsmith]

Logged In: YES
user_id=411198

See patch http://python.org/sf/1557390

[birkenfeld]

Logged In: YES
user_id=849994

Thanks for the report, fixed in rev. 52072, 52073 (2.4),
52074 (2.5).