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* Add Spain National ID validator (#7574) * is_spain_national_id() * Update is_spain_national_id.py * Some systems add a dash Co-authored-by: Christian Clauss <cclauss@me.com>
73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
NUMBERS_PLUS_LETTER = "Input must be a string of 8 numbers plus letter"
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LOOKUP_LETTERS = "TRWAGMYFPDXBNJZSQVHLCKE"
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def is_spain_national_id(spanish_id: str) -> bool:
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"""
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Spain National Id is a string composed by 8 numbers plus a letter
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The letter in fact is not part of the ID, it acts as a validator,
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checking you didn't do a mistake when entering it on a system or
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are giving a fake one.
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https://en.wikipedia.org/wiki/Documento_Nacional_de_Identidad_(Spain)#Number
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>>> is_spain_national_id("12345678Z")
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True
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>>> is_spain_national_id("12345678z") # It is case-insensitive
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True
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>>> is_spain_national_id("12345678x")
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False
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>>> is_spain_national_id("12345678I")
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False
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>>> is_spain_national_id("12345678-Z") # Some systems add a dash
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True
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>>> is_spain_national_id("12345678")
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Traceback (most recent call last):
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...
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ValueError: Input must be a string of 8 numbers plus letter
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>>> is_spain_national_id("123456709")
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Traceback (most recent call last):
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...
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ValueError: Input must be a string of 8 numbers plus letter
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>>> is_spain_national_id("1234567--Z")
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Traceback (most recent call last):
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...
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ValueError: Input must be a string of 8 numbers plus letter
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>>> is_spain_national_id("1234Z")
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Traceback (most recent call last):
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...
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ValueError: Input must be a string of 8 numbers plus letter
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>>> is_spain_national_id("1234ZzZZ")
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Traceback (most recent call last):
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...
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ValueError: Input must be a string of 8 numbers plus letter
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>>> is_spain_national_id(12345678)
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Traceback (most recent call last):
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...
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TypeError: Expected string as input, found int
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"""
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if not isinstance(spanish_id, str):
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raise TypeError(f"Expected string as input, found {type(spanish_id).__name__}")
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spanish_id_clean = spanish_id.replace("-", "").upper()
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if len(spanish_id_clean) != 9:
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raise ValueError(NUMBERS_PLUS_LETTER)
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try:
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number = int(spanish_id_clean[0:8])
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letter = spanish_id_clean[8]
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except ValueError as ex:
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raise ValueError(NUMBERS_PLUS_LETTER) from ex
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if letter.isdigit():
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raise ValueError(NUMBERS_PLUS_LETTER)
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return letter == LOOKUP_LETTERS[number % 23]
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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