Issue with function keyword defaults

[Morten W. Petersen]

Hi,

after trying to set an empty dictionary as a default keyword arguments'
value, this happened (same thing happened on 2.0.1 BTW):

morten at debian:~$ python
Python 1.5.2 (#0, Apr 10 2001, 10:03:44)  [GCC 2.95.3 20010219
(prerelease)] on linux2 Copyright 1991-1995 Stichting Mathematisch
Centrum, Amsterdam
>>> import time
>>> def test(r={}):
...     r[time.time()] = time.time()
...     return r
...
>>> test()
{997015577.922: 997015577.922}
>>> test()
{997015578.849: 997015578.849, 997015577.922: 997015577.922}
>>> test()
{997015579.446: 997015579.446, 997015578.849: 997015578.849, 
 997015577.922: 997015577.922

I would assume that r would be re-initialized on every call, but that's
not happening;  could anyone explain this behaviour?

Thanks,

Morten