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  1. import re
  2.  
  3. def num_format(T):
  4.     clean_number = ''.join(c for c in T if c.isdigit())
  5.     return re.sub(r'(\d{3})(?=\d{2})|(?<=\d{2})(?=\d{2}$)', r'\1-', clean_number)
  6.  
  7. print(num_format("05553--70002654"))
Success #stdin #stdout 0.02s 9752KB
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Standard input is empty
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055-537-000-26-54
https://ideone.com/O6YX1L
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
secret

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