def validate(number):
"""Checks to see if the number provided is a valid VAT number. This
checks the length, formatting and check digit."""
number = compact(number)
if not all(x in _alphabet for x in number[:2]):
raise InvalidFormat()
if not number[2:].isdigit():
raise InvalidFormat()
if len(number) != 11:
raise InvalidLength()
if number[2:5] != '000':
# numbers from Monaco are valid TVA but not SIREN
siren.validate(number[2:])
if number.isdigit():
# all-numeric digits
if int(number[:2]) != (int(number[2:] + '12') % 97):
raise InvalidChecksum()
else:
# one of the first two digits isn't a number
if number[0].isdigit():
check = (_alphabet.index(number[0]) * 24 +
_alphabet.index(number[1]) - 10)
else:
check = (_alphabet.index(number[0]) * 34 +
_alphabet.index(number[1]) - 100)
if (int(number[2:]) + 1 + check // 11) % 11 != (check % 11):
raise InvalidChecksum()
return number
def validate(number):
"""Check if the number is a valid VAT number. This checks the length,
formatting and check digit."""
number = compact(number)
if not all(x in _alphabet for x in number[:2]):
raise InvalidFormat()
if not isdigits(number[2:]):
raise InvalidFormat()
if len(number) != 11:
raise InvalidLength()
if number[2:5] != '000':
# numbers from Monaco are valid TVA but not SIREN
siren.validate(number[2:])
if isdigits(number):
# all-numeric digits
if int(number[:2]) != (int(number[2:] + '12') % 97):
raise InvalidChecksum()
else:
# one of the first two digits isn't a number
if isdigits(number[0]):
check = (
_alphabet.index(number[0]) * 24 +
_alphabet.index(number[1]) - 10)
else:
check = (
_alphabet.index(number[0]) * 34 +
_alphabet.index(number[1]) - 100)
if (int(number[2:]) + 1 + check // 11) % 11 != (check % 11):
raise InvalidChecksum()
return number
def validate_siren(value):
try:
siren.validate(value)
except (InvalidChecksum, InvalidFormat, InvalidLength):
raise ValidationError(
_("%(value)s is not a valid siren id"),
params={"value": value},
)
def validate(number):
"""Checks to see if the number provided is a valid number. This checks
the length, formatting and check digit."""
number = compact(number)
if not number.isdigit():
raise InvalidFormat()
if len(number) != 14:
raise InvalidLength()
luhn.validate(number)
siren.validate(number[:9])
return number
def validate(number):
"""Checks to see if the number provided is a valid number. This checks
the length, formatting and check digit."""
number = compact(number)
if not number.isdigit():
raise InvalidFormat()
if len(number) != 14:
raise InvalidLength()
luhn.validate(number)
siren.validate(number[:9])
return number
def validate(number):
"""Check if the number is a valid SIRET. This checks the length,
formatting and check digit."""
number = compact(number)
if not isdigits(number):
raise InvalidFormat()
if len(number) != 14:
raise InvalidLength()
luhn.validate(number)
siren.validate(number[:9])
return number
def validate(number):
"""Check if the number is a valid SIRET. This checks the length,
formatting and check digit."""
number = compact(number)
if not isdigits(number):
raise InvalidFormat()
if len(number) != 14:
raise InvalidLength()
luhn.validate(number)
siren.validate(number[:9])
return number
def validate(number):
"""Check if the number is a valid SIRET. This checks the length,
formatting and check digit."""
number = compact(number)
if not isdigits(number):
raise InvalidFormat()
if len(number) != 14:
raise InvalidLength()
# La Poste SIRET (except the head office) do not use the Luhn checksum
# but the sum of digits must be a multiple of 5
if number.startswith('356000000') and number != '35600000000048':
if sum(map(int, number)) % 5 != 0:
raise InvalidChecksum()
else:
luhn.validate(number)
siren.validate(number[:9])
return number
