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  1. import re
  2.  
  3. regex = r"(?<=[a-zA-Z])(\d)(?!\d)"
  4. test_str = ("Z9_M50_P3_2X_MY_STRING")
  5. subst = "0\\1"
  6. result = re.sub(regex, subst, test_str, 0, re.MULTILINE)
  7.  
  8. if result:
  9.     print (result)
  10.  
  11.  
Success #stdin #stdout 0.02s 6828KB
comments (?)
stdin 
Standard input is empty
stdout 
Z09_M50_P03_2X_MY_STRING
https://ideone.com/8dXeE3
language:
Python (cpython 2.7.16)
created:
6 years ago
visibility:
public

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