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  1. import re
  2. text = "X4IitemX6Nabc123"
  3. rx1 = r'^X(\d+)'
  4. m1 = re.search(rx1, text)
  5. if m1:
  6.   rx2 = fr'^X(?P<namelen>\d+)I(?P<name>.{{{m1.group(1)}}})X(?P<numlen>\d+)N(?P<num>.+)$'
  7.   if re.search(rx2, text):
  8.     print(text, '-> MATCH!')
  9.   else:
  10.   	print(text, '-> FAIL!')
  11. else:
  12.   print(text, '-> FAIL!')
Success #stdin #stdout 0.03s 9416KB
comments (?)
stdin 
Standard input is empty
stdout 
X4IitemX6Nabc123 -> MATCH!
https://ideone.com/5cxiwe
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
secret

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