Regex

This module exports the following functions:

• match Match a regular expression pattern to the beginning of a string.
• fullmatch Match a regular expression pattern to all of a string.
• search Search a string for the presence of a pattern.
• sub Substitute occurrences of a pattern found in a string.
• subn Same as sub, but also return the number of substitutions made.
• split Split a string by the occurrences of a pattern.
• findall Find all occurrences of a pattern in a string.
• finditer Return an iterator yielding a Match object for each match.
• compile Compile a pattern into a Pattern object.
• purge Clear the regular expression cache.
• escape Backslash all non-alphanumerics in a string.