I need a regular expression to check if a string matches it. The string consists of one to there parts, each parts is a underline followed by a number, and the number of the first part should be 0~31, and numbers of other parts should be larger than 31.
The requested re should match the following strings: _3 _5_33 _21 _29_50 _29_700_700000 And the re shouldn't match the following strings: _3_5 the number of part 2 is less than 31 _43 the number of part 1 shouldn't be less than 31 _5_43_69_98 there shouldn't be more than 3 parts How to write the re, please? Thanks in advance. -- http://mail.python.org/mailman/listinfo/python-list
