[ python-Bugs-210698 ] strptime gives format mismatch when time
zone present (PR#164)
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Fri Nov 14 19:17:54 EST 2003
Bugs item #210698, was opened at 2000-07-31 14:29
Message generated for change (Comment added) made by trewitt
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Category: None
Group: Platform-specific
Status: Closed
Resolution: Invalid
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Tim Peters (tim_one)
Summary: strptime gives format mismatch when time zone present (PR#164)
Initial Comment:
Jitterbug-Id: 164
Submitted-By: python-bugreport at derf.net
Date: Tue, 21 Dec 1999 08:27:27 -0500 (EST)
Version: 1.5.2
OS: RedHat 5.2; Linux 2.2.12
time.strptime() seems to fail when the time zone ('%Z') appears in the format
string. when it is omitted from the format string (and from the string being
parsed), strptime() works fine.
here is a sample script which demonstrates the bug:
------
#!/usr/bin/python
import time
timetuple0 = time.localtime(time.time())
print timetuple0
format1 = '%a %b %d %H:%M:%S %Y'
timestring1 = time.strftime( format1 , timetuple0 )
print timestring1
timetuple1 = time.strptime( timestring1 , format1 )
print timetuple1
format2 = '%a %b %d %H:%M:%S %Z %Y'
timestring2 = time.strftime( format2 , timetuple0 )
print timestring2
timetuple2 = time.strptime( timestring2 , format2 )
print timetuple2
------
when i run the above, i get the following output:
------
(1999, 12, 21, 5, 25, 35, 1, 355, 0)
Tue Dec 21 05:25:35 1999
(1999, 12, 21, 5, 25, 35, 1, 355, 0)
Tue Dec 21 05:25:35 PST 1999
Traceback (innermost last):
File "./test.py", line 17, in ?
timetuple2 = time.strptime( timestring2 , format2 )
ValueError: format mismatch
------
====================================================================
Audit trail:
Tue Dec 21 11:47:04 1999 guido changed notes
Tue Dec 21 11:47:05 1999 guido moved from incoming to platformbug
----------------------------------------------------------------------
Comment By: Glenn Trewitt (trewitt)
Date: 2003-11-14 16:17
Message:
Logged In: YES
user_id=230628
I get the same error *for some builds*. I'm using Redhat 9,
and the bug shows up in (I think) the stock Python 2.2. If
I compile 2.3.2 from source, it works fine.
(2003, 11, 14, 16, 3, 22, 4, 318, 0)
Fri Nov 14 16:03:22 2003
(2003, 11, 14, 16, 3, 22, 4, 318, 0)
Fri Nov 14 16:03:22 PST 2003
Traceback (most recent call last):
File "timep.py", line 17, in ?
timetuple2 = time.strptime( timestring2 , format2 )
ValueError: format mismatch
----------------------------------------------------------------------
Comment By: Tim Peters (tim_one)
Date: 2000-09-08 09:13
Message:
Closed it, as it's not a Python bug but a bug in the platform libc (if a non-std fnc can be called "buggy" at all ...).
----------------------------------------------------------------------
Comment By: M.-A. Lemburg (lemburg)
Date: 2000-09-08 05:27
Message:
FYI, you could check out mxDateTime which provides a parser
for various date/time formats instead of waiting for your strptime()
C API to get fixed.
mxDateTime is available at http://starship.python.net/~lemburg/.
----------------------------------------------------------------------
Comment By: Jeremy Hylton (jhylton)
Date: 2000-09-07 15:06
Message:
Please do triage on this bug.
----------------------------------------------------------------------
Comment By: Nobody/Anonymous (nobody)
Date: 2000-08-01 14:03
Message:
The C library strptime() needs fixin'.
----------------------------------------------------------------------
Comment By: Nobody/Anonymous (nobody)
Date: 2000-08-01 14:03
Message:
From: Guido van Rossum <guido at CNRI.Reston.VA.US>
Subject: Re: [Python-bugs-list] strptime gives format mismatch when time zone present (PR#164)
Date: Tue, 21 Dec 1999 09:12:15 -0500
> time.strptime() seems to fail when the time zone ('%Z') appears in
> the format string. when it is omitted from the format string (and
> from the string being parsed), strptime() works fine.
Reporting this as a Python bug is not going to fix it. The
time.strptime() function in Python is a very thin wrapper around the
strptime() function in the C library. We get a lot of complaints
about this, but there's no way that we're able to fix this -- it's the
C strptime() function that needs to be fixed. Write to your friendly
Linux support people!
--Guido van Rossum (home page: http://www.python.org/~guido/)
----------------------------------------------------------------------
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