Python bug with [] as default value in functions?

[Robin Becker]

In article <3AD5989D.E22E2CBF at darwin.in-berlin.de>, Dinu Gherman
<gherman at darwin.in-berlin.de> writes
...
Hi I think you are getting involved with one of the standard 'features'
of python.

eg
>>> def dingo(n,L=[]):
...     if n: L.append(n)
...     return L
... 
>>> dingo(1)
[1]
>>> dingo(0)
[1]
>>>

ie the first call of dingo modified the default argument. Since the
empty list is mutable that particular version of it gets modified by the
first call and changes the default for the second.

Hope your tooth ache is better. 
-- 
Robin Becker