On Thu, 4 Jun 2015 11:36 pm, Palpandi wrote: > Hi All, > > This is the case. To split "string2" from "string1_string2" I am using > re.split('_', "string1_string2", 1)[1].
There is absolutely no need to use the nuclear-powered bulldozer of regular expressions to crack that tiny peanut. Strings have a perfectly useful split method: py> "string1_string2".split("_") ['string1', 'string2'] > It is working fine for string "string1_string2" and output as "string2". > But actually the problem is that if a sting is "__string1_string2" and the > output is "_string1_string2". It is wrong. No, the output is correct. You tell Python to split on the *first* underscore only, which is exactly what Python does: py> re.split('_', "__string1_string2", 1) ['', '_string1_string2'] > How to fix this issue? Again, this is a small problem, and regular expressions are not needed. Just strip the underscores off the left, then split: py> s = "__string1_string2" py> s.lstrip("_").split("_") ['string1', 'string2'] -- Steven -- https://mail.python.org/mailman/listinfo/python-list