import copy
a = ["a", "b", "c", "d", "e"]
b = copy.copy(a)
for item in a:
print item
b.remove(item)
a = copy.copy(b)
Works: to avoid changing the list you are iterating on, you make a copy of a
, iterate over it and remove the items from b
. Then you copy b
(the altered copy) back to a
.