New subject: [issue13286] PEP 3151 breaks backward compatibility: it should be documented

Oct. 28, 2011

      New submission from STINNER Victor <victor.stinner@haypocalc.com>:

The following example works on Python 2.7 and 3.2, but fails on Python 3.3:
-----------
import errno
import os

try:
    os.rmdir("testdir")
except:
    pass
os.mkdir("testdir")

try:
    try:
        os.mkdir("testdir")
    except IOError as exc:
        # If can't get proper access, then just forget about writing
        # the data.
        if exc.errno == errno.EACCES:
            pass
        else:
            raise
    except OSError as exc:
        # Probably another Python process already created the dir.
        if exc.errno == errno.EEXIST:
            pass
        else:
            raise
except Exception:
    print("PEP 3151 broke backward compatibility on such pattern!")
-----------

I noticed the problem while reading the changeset e4d44c2e8e81.

----------
assignee: docs@python
components: Documentation
messages: 146562
nosy: docs@python, flox, haypo, pitrou
priority: normal
severity: normal
status: open
title: PEP 3151 breaks backward compatibility: it should be documented
versions: Python 3.3

_______________________________________
Python tracker <report@bugs.python.org>
<http://bugs.python.org/issue13286>
_______________________________________

[issue13286] PEP 3151 breaks backward compatibility: it should be documented

STINNER Victor

Antoine Pitrou

STINNER Victor

Florent Xicluna

Éric Araujo

STINNER Victor

Matthias Bussonnier

STINNER Victor

Matthias Bussonnier

Antoine Pitrou

STINNER Victor

Florent Xicluna

Éric Araujo

STINNER Victor

Matthias Bussonnier

STINNER Victor

Matthias Bussonnier

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