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  1. import re
  2.  
  3. pattern = r"([A-Z]-(?=[A-Z]))|([A-Z](?=[0-9])|[0-9](?=[A-Z]))"
  4. strings = [
  5.     "A-BA",
  6.     "A-B-BAB",
  7.     "9AHYA7",
  8.     "977AB99T5",
  9.     "HS98743YVJUHGF78BF8HH3JHFC83438VUN5498FCNG",
  10.     "7267-VHSBVH8737HHC8C-HYHFWYFHH-7Y84743YR8437G"
  11. ]
  12.  
  13. for str in strings:
  14.     result = re.sub(
  15.         pattern,
  16.         lambda x: x.group(1)[:-1] if x.group(1) else x.group(2) + "-",
  17.         str
  18.     )
  19.     print(result)
Success #stdin #stdout 0.02s 9588KB
comments ()
stdin 
Standard input is empty
stdout 
ABA
ABBAB
9-AHYA-7
977-AB-99-T-5
HS-98743-YVJUHGF-78-BF-8-HH-3-JHFC-83438-VUN-5498-FCNG
7267-VHSBVH-8737-HHC-8-CHYHFWYFHH-7-Y-84743-YR-8437-G
https://ideone.com/UPNSR2
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
secret

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