Something strange with python 2.2.1 under RedHat 8.0

[Richard Kuhns]

I can't iterate over os.environ, while a 'hand-made' dictionary works. It
works fine with python 2.2.3 under FreeBSD 4.8. I looked through the
release notes but didn't find anything I thought applied, so I guess I'd
just like to know if this is something peculiar to my system, or is it
more wide-spread? Here's what I get:

: molin$~; python
Python 2.2.1 (#1, Aug 30 2002, 12:15:30)
[GCC 3.2 20020822 (Red Hat Linux Rawhide 3.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import os
for k in os.environ: .... print k
....
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/usr/lib/python2.2/UserDict.py", line 14, in __getitem__
def __getitem__(self, key): return self.data[key]
KeyError: 0 d = {}
d['one'] = 1
d['two'] = 2
d['three'] = 3
for k in d: .... print k
....
three
two
one

--
Richard Kuhns rj*****@geetel.net

[Peter Hansen]

Richard Kuhns wrote:

Python 2.2.1 (#1, Aug 30 2002, 12:15:30)
[GCC 3.2 20020822 (Red Hat Linux Rawhide 3.2-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import os
for k in os.environ:

... print k
...
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/usr/lib/python2.2/UserDict.py", line 14, in __getitem__
def __getitem__(self, key): return self.data[key]
KeyError: 0

Judging by the error message, os.environ is *not* a dict, but
a UserDict. If it were to be subclassed from IterableUserDict
instead, it would work okay I guess.

Checking Python 2.2.2, I find it *is* now subclassed from
IterableUserDict, so you're reporting a bug that is fixed
in a later release. Please upgrade.

I'd check the bug tracker on SourceForge, but I am rarely able to use
that pathetic piece of crap successfully to search for already-reported
bugs, so I'll just skip it... :-)

-Peter