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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Validating Credit Card Numbers
  5. Discussions

Validating Credit Card Numbers

  • arvinchhi4u
     + 0 comments
    import re

pattern = r'^(?!.*(\d)(\-*\1){3})[4-6]((\d{3}(\-\d{4}){3})|([\d]{15}))$'

for _ in range(int(input())):
    print('Valid' if re.match(pattern, input()) else 'Invalid')