15. Module re

Python uses re module to work with regular expressions.

Core functions of re module:

• match - searches a sequence at the beginning of the line

• search - searches for first match with template

• findall - searches for all matches with template. Returns the resulting strings as a list

• finditer - searches for any matches with template. Returns an iterator

• compile - compiles regex. You can then apply all of listed functions to this object

• fullmatch - the entire line must conform to regex described

In addition to functions that search matches, module has the following functions:

• re.sub - for replacement in strings

• re.split - to split string into parts