Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/validators/iban.py: 100%

1"""IBAN.""" 

2 

3# standard 

4import re 

5 

6# local 

7from .utils import validator 

8 

9 

10def _char_value(char: str): 

11 """A=10, B=11, ..., Z=35.""" 

12 return char if char.isdigit() else str(10 + ord(char) - ord("A")) 

13 

14 

15def _mod_check(value: str): 

16 """Check if the value string passes the mod97-test.""" 

17 # move country code and check numbers to end 

18 rearranged = value[4:] + value[:4] 

19 return int("".join(_char_value(char) for char in rearranged)) % 97 == 1 

20 

21 

22@validator 

23def iban(value: str, /): 

24 """Return whether or not given value is a valid IBAN code. 

25 

26 Examples: 

27 >>> iban('DE29100500001061045672') 

28 # Output: True 

29 >>> iban('123456') 

30 # Output: ValidationError(func=iban, ...) 

31 

32 Args: 

33 value: 

34 IBAN string to validate. 

35 

36 Returns: 

37 (Literal[True]): If `value` is a valid IBAN code. 

38 (ValidationError): If `value` is an invalid IBAN code. 

39 """ 

40 return ( 

41 (re.match(r"^[a-z]{2}[0-9]{2}[a-z0-9]{11,30}$", value, re.IGNORECASE) and _mod_check(value)) 

42 if value 

43 else False 

44 )