How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs. Regular expressions, or “regex,” is a system for finding complex ...

I'm trying to match a string of the form DDhDDmDDs (i.e. some sort of a time string using hms as delimiters). Very basically I'm using '(\d+h)?(\d+m)?(\d+s)?', but that doesn't really do it, as it'll ...