cesco wrote: > Hi, > > 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' > Is there a common recipe to accomplish that? I can't come up with any > solution...
What about: >>> import re >>> s1 = 'hi_cat_bye_dog' >>> print re.sub(r'([^_]+)_([^_]+)_?', r'\1:\2;', s1) hi:cat;bye:dog; it still works for a longer string: >>> s1 = 'hi_cat_bye_dog_' + s1 >>> s1 'hi_cat_bye_dog_hi_cat_bye_dog' >>> print re.sub(r'([^_]+)_([^_]+)_?', r'\1:\2;', s1) hi:cat;bye:dog;hi:cat;bye:dog; -- http://mail.python.org/mailman/listinfo/python-list
