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  1. import re
  2.  
  3. s = "asbshbsbuhb"
  4.  
  5. print(re.findall(r"((.)(?!\2)(.)(?!\2|\3)(.)(?!\2|\3|\4).)", s))
Success #stdin #stdout 0.01s 7096KB
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Standard input is empty
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[('sbuh', 's', 'b', 'u')]
https://ideone.com/MlAYC5
https://stackoverflow.com/questions/74701512/is-there-a-regular-expression-that-matches-a-string-of-any-different-letters-in
language:
Python (cpython 2.7.16)
created:
3 years ago
visibility:
public

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