How to use the question mark of regular expression in python

This article mainly introduces the python regular expression question mark how to use, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1. Declaration and non-greedy matching.

2. Represents an optional grouping. Match zero or more times with asterisks, one or more times with plus signs, specific times with curly braces, greedy and non-greedy matches.

Example

Import re a = 'wxxIxxeuieiejfsdjxxlovexxfsiewiweirxxUxxwuerowiur'b = re.findall (' xx (. *?) xx', a) print (b) print (type (b)) for item in b:print (item)

Output

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