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what does following regex pattern indicate?- r'([a-z A-Z 0-9])\1'

Shubham Jagtap
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  • Does this answer your question? [Reference - What does this regex mean?](https://stackoverflow.com/questions/22937618/reference-what-does-this-regex-mean) [What's the meaning of a number after a backslash in a regular expression?](https://stackoverflow.com/questions/8624345/whats-the-meaning-of-a-number-after-a-backslash-in-a-regular-expression) – Hao Wu May 21 '21 at 06:13
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    It looks for pairs of characters that are letters, numbers or spaces. – Chris Lear May 21 '21 at 06:15
  • https://regex101.com use this reader for example – Paweł Długosz May 21 '21 at 06:19

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