What are metacharacters in Python regular expressions

This article mainly introduces what metacharacters are in Python regular expressions. It is very detailed and has a certain reference value. Friends who are interested must read it!

1. Metacharacters are special characters used to describe other characters, which are composed of basic metacharacters and ordinary characters.

The basic metacharacter is one of the elements that make up the metacharacter.

2. Meta characters have a special meaning in regular expressions, which make regular expressions have more expressive ability.

Example

Such as "." Matches any character except newline characters: letters, numbers, symbols, white space characters.

# example: print (re.match ('.a.c.','* A1c')) # print (re.match ('.a.c.','* A1c\ n')) # None is all the content of the article "what are metacharacters in Python regular expressions". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!