How Python regular expression strings are formed

Editor to share with you how the Python regular expression string is formed. I hope you will get something after reading this article. Let's discuss it together.

When it comes to regular expressions, regular expressions are frequently used by friends who have been learning for some time. In this article, we need to understand the components of regular expression strings.

1. Regular expression strings are made up of ordinary characters and metacharacters.

2. An ordinary character is a character expressed according to the literal meaning of the character. Metacharacters are predefined specific characters.

Example

Import re # string 1regxregular expression object pattern=re.compile ('a.b') # matching string 1m1=pattern.match (regx_string) print (M1) # # matching string 2m2=pattern.match (regx_string2) print (m2) # # string 3regxmatching string3 matching and' m3=pattern.match (regx_string3) print (m3) # None finished reading this article I believe you have a certain understanding of "how Python regular expression strings are formed". If you want to know more about it, please follow the industry information channel. Thank you for reading!