Description

assignee = 'https://github.com/ezio-melotti'
closed_at = <Date 2013-04-03.23:17:26.376>
created_at = <Date 2013-03-29.10:48:03.948>
labels = ['type-bug', 'library']
title = 'strptime exception context'
updated_at = <Date 2013-04-03.23:17:26.375>
user = 'https://github.com/PCManticore'

activity = <Date 2013-04-03.23:17:26.375>
actor = 'ezio.melotti'
assignee = 'ezio.melotti'
closed = True
closed_date = <Date 2013-04-03.23:17:26.376>
closer = 'ezio.melotti'
components = ['Library (Lib)']
creation = <Date 2013-03-29.10:48:03.948>
creator = 'Claudiu.Popa'
dependencies = []
files = ['29602', '29605']
hgrepos = []
issue_num = 17572
keywords = ['patch']
message_count = 4.0
messages = ['185495', '185520', '185976', '185977']
nosy_count = 3.0
nosy_names = ['ezio.melotti', 'Claudiu.Popa', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue17572'
versions = ['Python 3.3', 'Python 3.4']

Activity

1. PCManticore commented on Mar 29, 2013

   

   PCManticoremannequin

   on Mar 29, 2013

   MannequinAuthor

   More actions

   When using a directive that is not recognised by time.strptime, the following occurs in Python 3:

   >>> time.strptime("", "%D")
   Traceback (most recent call last):
     File "C:\Python33\lib\_strptime.py", line 320, in _strptime
       format_regex = _TimeRE_cache.compile(format)
     File "C:\Python33\lib\_strptime.py", line 268, in compile
       return re_compile(self.pattern(format), IGNORECASE)
     File "C:\Python33\lib\_strptime.py", line 262, in pattern
       self[format[directive_index]])
   KeyError: 'D'
   
   During handling of the above exception, another exception occurred:
   
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "C:\Python33\lib\_strptime.py", line 494, in _strptime_time
       tt = _strptime(data_string, format)[0]
     File "C:\Python33\lib\_strptime.py", line 329, in _strptime
       (bad_directive, format))
   ValueError: 'D' is a bad directive in format '%D'
   >>>

   Probably the KeyError should be supressed when raising the ValueError. The attached patch tries to fix this issue, by suppressing the context.
2. PCManticore

   added

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Mar 29, 2013
3. ezio-melotti commented on Mar 29, 2013

   

   ezio-melotti

   on Mar 29, 2013

   Member

   More actions

   The fix LGTM. The attached patch tweaks a bit your test and adds another one to check _strptime directly.
4. python-dev commented on Apr 3, 2013

   

   python-devmannequin

   on Apr 3, 2013

   Mannequin

   More actions

   New changeset 3203e083aa7b by Ezio Melotti in branch '3.3':
   bpo-17572: Avoid chained exceptions while passing bad directives to time.strptime(). Initial patch by Claudiu Popa.
   http://hg.python.org/cpython/rev/3203e083aa7b

   New changeset d408c9bd4bf7 by Ezio Melotti in branch 'default':
   bpo-17572: merge with 3.3.
   http://hg.python.org/cpython/rev/d408c9bd4bf7
5. ezio-melotti commented on Apr 3, 2013

   

   ezio-melotti

   on Apr 3, 2013

   Member

   More actions

   Fixed, thanks for the report and the patch!
6. ezio-melotti

   closed this as completedon Apr 3, 2013
7. ezio-melotti

   self-assigned this

   on Apr 3, 2013
8. ezio-melotti

   transferred this issue fromon Apr 10, 2022
9. gpshead

   added 3 commits that reference this issue on Nov 12, 2026

   gh-161763: Correct SSL docs for unconnected client sockets (#GH-61772)

   f112215

   [3.15] gh-161763: Correct SSL docs for unconnected client sockets (#G…

   f49bb59

   [3.14] gh-161763: Correct SSL docs for unconnected client sockets (#G…

   83b1e74
10. orsenthil

    added a commit that references this issue on Nov 12, 2026

    pythongh-161763: Correct SSL docs for unconnected client sockets (#py…

    2753730

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