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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Validating Postal Codes
  5. Discussions

Validating Postal Codes

  • stu14
     + 2 comments

    So why did this fail?

    regex_integer_in_range = r"^[1-9][0-9]{5}$"
regex_alternating_repetitive_digit_pair = r"(\d)\d?(\1)"

    I know that regex_integer_in_range is fine, but what is it about regex_alternating_repetitive_digit_pair that won't work on all test cases?