Regular module (Re)
1. What is a regular
Regular use of some symbol combinations that have special meaning or the method described character string together (referred to as regular expressions). Or: Regular rule is used to describe a class of things.
(In Python) it is embedded in Python, and is achieved by re module. Regular expression pattern is compiled into a series of byte code, written in C and then executed by the matching engine.
2, the conventional pattern matching
