urllib doesn't raise IOError correctly with new IOError

[gissehel]

BPO	1566800
Nosy	@birkenfeld

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

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GitHub fields:

assignee = None
closed_at = <Date 2006-09-30.09:04:08.000>
created_at = <Date 2006-09-28.05:47:23.000>
labels = ['library']
title = "urllib doesn't raise IOError correctly with new IOError"
updated_at = <Date 2006-09-30.09:04:08.000>
user = 'https://bugs.python.org/gissehel'

bugs.python.org fields:

activity = <Date 2006-09-30.09:04:08.000>
actor = 'georg.brandl'
assignee = 'none'
closed = True
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2006-09-28.05:47:23.000>
creator = 'gissehel'
dependencies = []
files = []
hgrepos = []
issue_num = 1566800
keywords = []
message_count = 2.0
messages = ['30046', '30047']
nosy_count = 2.0
nosy_names = ['georg.brandl', 'gissehel']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue1566800'
versions = ['Python 2.5']

[gissehel]

The version I used is :

>>> sys.version
'2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 
bit (Intel)]'

On Windows XP SP2.

While I think every python 2.5 releases are concerned.

On line 357 of urllib.py from 2.5 release, there is a
raise of an IOError with 4 arguments. It look like it
was fine with python 2.4 but it hang up with a
"TypeError: EnvironmentError expected at most 3
arguments, got 4"

Concretly, when you hit a page with a "redirect" using
error 302 for exemple, instead of raising an IOError,
it raise a TypeError, so it break code which expect an
IOError here (as a "normal" behavior for 302 codes)

It look like IOError is totally different between
Python 2.4 and Python 2.5 (it was a class, it's now a
type)

[birkenfeld]

Logged In: YES
user_id=849994

Thanks for the report, IOError can now again take any number
of arguments. rev. 52061, 52062 (2.5).