Hi, I'm doing a regular expression matching, let's say "a=re.search(re_str,match_str)", if matching, I don't know how many str/item will be extracted from re_str, maybe a.group(1), a.group(2) exist but a.group(3) does not.
Can I somehow check it? something like: if exist(a.group(1)): print a.group(1) if exist(a.group(2)): print a.group(2) if exist(a.group(3)): print a.group(3) I don't want to be hit by "Indexerror": >>>print a.group(3) Traceback (most recent call last): File "<stdin>", line 1, in <module> IndexError: no such group >>> thanks!!! -- http://mail.python.org/mailman/listinfo/python-list
