CODEWITHSUNDEEP
pythonregex
Alex Mercer
Alex Mercer

Reputation: 495

except one part of character class in python regex

how can i except \d in below regex?

^[\d\w ]+$

it Matches strings with any words and digits and space characters. i want to change this to accept strings with any words and space characters.

i try below regex but it excepts digits and space too.

^[^\d\w ]+$

Upvotes: 1

Views: 807

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 627082

You may use

^(?:[^\W\d]| )+$

See the regex demo. It can also be written as ^(?:(?!\d)[\w ])+$.

Details

  • ^ - start of string
  • (?:[^\W\d]| )+ - 1 or more
    • [^\W\d] - chars other than non-word and digit chars
    • | - or
    • - whitespace
  • $ - end of string.

In ^(?:(?!\d)[\w ])+$, [\w ] that may match any word and whitespace char, is restricted with (?!\d) lookahead and thus does not match digits.

Or, if you need ASCII only words:

^[a-zA-Z_ ]+$

Please bear in mind it will also allow underscores since \w matches _ chars. If you do not need it, use ^(?:[^\W\d_]| )+$ / ^(?:(?![\d_])[\w ])+$ / ^[a-zA-Z ]+$.

Upvotes: 1

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