cesco wrote: > say I have a string like the following: s1 = 'hi_cat_bye_dog' > and I want to replace the even '_' with ':' and the odd '_' with ',' so > that I get a new string like the following: s2 = 'hi:cat,bye:dog'
>>> import re >>> from itertools import cycle >>> re.sub("_", lambda m, c=cycle(":,").next: c(), "hi_cat_bye_dog") 'hi:cat,bye:dog' > Is there a common recipe to accomplish that? I can't come up with any > solution... There are many. If you want to learn Python don't be afraid to write it in a long-winded way (with loops and helper functions) first. Peter -- http://mail.python.org/mailman/listinfo/python-list