Python Regular expression function The difference between match () and search () is detailed

Match () and search () are regular matching functions in Python, what is the difference between these two functions?

The match () function only detects if the re is matched at the start of the string, and search () scans the entire string lookup match , which means that match () is returned only if the 0-bit match succeeds, if it is not successful at the start position. Match () returns none

For example:

1234567891011

#! /usr/bin/env python# -*- coding=utf-8 -*- importre text =‘pythontab‘m =re.match(r"\w+", text)ifm:     printm.group(0)else:    print‘not match‘

The result is: Pythontab

and

123456789101112

#! /usr/bin/env python# -*- coding=utf-8 -*-# importre text =‘@pythontab‘m =re.match(r"\w+", text)ifm:     printm.group(0)else:    print ‘not match‘

The result is: not match

Search () scans the entire string and returns the first successful match

For example:

123456789101112

#! /usr/bin/env python# -*- coding=utf-8 -*-# importre text =‘pythontab‘m = re.search(r"\w+", text)ifm:     printm.group(0)else:    print‘not match‘

The result is: Pythontab

That's it:

123456789101112

#! /usr/bin/env python# -*- coding=utf-8 -*-# importre text =‘@pythontab‘m =re.search(r"\w+", text)ifm:     printm.group(0)else:    print‘not match‘

The result is: Pythontab

Python Regular expression function The difference between match () and search () is detailed