Astan Chee <[EMAIL PROTECTED]> writes on Sat, 19 Aug 2006 03:34:26 +1000: > >>> for p in ps: > if p in qs: > ps.remove(p)
You are modifying an object ("ps") while you iterate over it.
This is a receipe for surprises...
The standard idiom is to iterate over a copy rather than the object itself:
for p in ps[:]:
....
Dieter
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