author | Lennard de Rijk <ljvderijk@gmail.com> |
Tue, 07 Apr 2009 22:20:23 +0000 | |
changeset 2125 | c24e8423cd1a |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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# -*- coding: utf-8 -*- |
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""" |
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Spanish-specific Form helpers |
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""" |
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from django.forms import ValidationError |
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from django.forms.fields import RegexField, Select, EMPTY_VALUES |
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from django.utils.translation import ugettext_lazy as _ |
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import re |
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|
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class ESPostalCodeField(RegexField): |
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""" |
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A form field that validates its input as a spanish postal code. |
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|
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Spanish postal code is a five digits string, with two first digits |
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between 01 and 52, assigned to provinces code. |
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""" |
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default_error_messages = { |
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'invalid': _('Enter a valid postal code in the range and format 01XXX - 52XXX.'), |
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} |
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|
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def __init__(self, *args, **kwargs): |
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super(ESPostalCodeField, self).__init__( |
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r'^(0[1-9]|[1-4][0-9]|5[0-2])\d{3}$', |
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max_length=None, min_length=None, *args, **kwargs) |
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|
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class ESPhoneNumberField(RegexField): |
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""" |
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A form field that validates its input as a Spanish phone number. |
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Information numbers are ommited. |
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|
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Spanish phone numbers are nine digit numbers, where first digit is 6 (for |
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cell phones), 8 (for special phones), or 9 (for landlines and special |
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phones) |
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|
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TODO: accept and strip characters like dot, hyphen... in phone number |
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""" |
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default_error_messages = { |
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'invalid': _('Enter a valid phone number in one of the formats 6XXXXXXXX, 8XXXXXXXX or 9XXXXXXXX.'), |
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} |
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|
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def __init__(self, *args, **kwargs): |
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super(ESPhoneNumberField, self).__init__(r'^(6|8|9)\d{8}$', |
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max_length=None, min_length=None, *args, **kwargs) |
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|
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class ESIdentityCardNumberField(RegexField): |
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""" |
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Spanish NIF/NIE/CIF (Fiscal Identification Number) code. |
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|
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Validates three diferent formats: |
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|
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NIF (individuals): 12345678A |
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CIF (companies): A12345678 |
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NIE (foreigners): X12345678A |
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|
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according to a couple of simple checksum algorithms. |
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|
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Value can include a space or hyphen separator between number and letters. |
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Number length is not checked for NIF (or NIE), old values start with a 1, |
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and future values can contain digits greater than 8. The CIF control digit |
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can be a number or a letter depending on company type. Algorithm is not |
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public, and different authors have different opinions on which ones allows |
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letters, so both validations are assumed true for all types. |
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""" |
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default_error_messages = { |
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'invalid': _('Please enter a valid NIF, NIE, or CIF.'), |
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'invalid_only_nif': _('Please enter a valid NIF or NIE.'), |
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'invalid_nif': _('Invalid checksum for NIF.'), |
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'invalid_nie': _('Invalid checksum for NIE.'), |
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'invalid_cif': _('Invalid checksum for CIF.'), |
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} |
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def __init__(self, only_nif=False, *args, **kwargs): |
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self.only_nif = only_nif |
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self.nif_control = 'TRWAGMYFPDXBNJZSQVHLCKE' |
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self.cif_control = 'JABCDEFGHI' |
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self.cif_types = 'ABCDEFGHKLMNPQS' |
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self.nie_types = 'XT' |
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id_card_re = re.compile(r'^([%s]?)[ -]?(\d+)[ -]?([%s]?)$' % (self.cif_types + self.nie_types, self.nif_control + self.cif_control), re.IGNORECASE) |
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super(ESIdentityCardNumberField, self).__init__(id_card_re, max_length=None, min_length=None, |
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error_message=self.default_error_messages['invalid%s' % (self.only_nif and '_only_nif' or '')], |
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*args, **kwargs) |
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|
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def clean(self, value): |
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super(ESIdentityCardNumberField, self).clean(value) |
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if value in EMPTY_VALUES: |
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return u'' |
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nif_get_checksum = lambda d: self.nif_control[int(d)%23] |
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|
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value = value.upper().replace(' ', '').replace('-', '') |
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m = re.match(r'^([%s]?)[ -]?(\d+)[ -]?([%s]?)$' % (self.cif_types + self.nie_types, self.nif_control + self.cif_control), value) |
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letter1, number, letter2 = m.groups() |
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|
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if not letter1 and letter2: |
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# NIF |
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if letter2 == nif_get_checksum(number): |
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return value |
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else: |
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raise ValidationError, self.error_messages['invalid_nif'] |
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elif letter1 in self.nie_types and letter2: |
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# NIE |
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if letter2 == nif_get_checksum(number): |
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return value |
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else: |
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raise ValidationError, self.error_messages['invalid_nie'] |
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elif not self.only_nif and letter1 in self.cif_types and len(number) in [7, 8]: |
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# CIF |
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if not letter2: |
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number, letter2 = number[:-1], int(number[-1]) |
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checksum = cif_get_checksum(number) |
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if letter2 in (checksum, self.cif_control[checksum]): |
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return value |
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else: |
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raise ValidationError, self.error_messages['invalid_cif'] |
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115 |
else: |
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raise ValidationError, self.error_messages['invalid'] |
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117 |
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class ESCCCField(RegexField): |
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""" |
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A form field that validates its input as a Spanish bank account or CCC |
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(Codigo Cuenta Cliente). |
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122 |
|
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Spanish CCC is in format EEEE-OOOO-CC-AAAAAAAAAA where: |
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124 |
|
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E = entity |
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O = office |
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C = checksum |
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A = account |
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129 |
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It's also valid to use a space as delimiter, or to use no delimiter. |
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131 |
|
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First checksum digit validates entity and office, and last one |
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validates account. Validation is done multiplying every digit of 10 |
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digit value (with leading 0 if necessary) by number in its position in |
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string 1, 2, 4, 8, 5, 10, 9, 7, 3, 6. Sum resulting numbers and extract |
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it from 11. Result is checksum except when 10 then is 1, or when 11 |
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then is 0. |
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138 |
|
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TODO: allow IBAN validation too |
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140 |
""" |
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default_error_messages = { |
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'invalid': _('Please enter a valid bank account number in format XXXX-XXXX-XX-XXXXXXXXXX.'), |
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'checksum': _('Invalid checksum for bank account number.'), |
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} |
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145 |
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def __init__(self, *args, **kwargs): |
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super(ESCCCField, self).__init__(r'^\d{4}[ -]?\d{4}[ -]?\d{2}[ -]?\d{10}$', |
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max_length=None, min_length=None, *args, **kwargs) |
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149 |
|
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def clean(self, value): |
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super(ESCCCField, self).clean(value) |
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if value in EMPTY_VALUES: |
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return u'' |
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control_str = [1, 2, 4, 8, 5, 10, 9, 7, 3, 6] |
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m = re.match(r'^(\d{4})[ -]?(\d{4})[ -]?(\d{2})[ -]?(\d{10})$', value) |
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entity, office, checksum, account = m.groups() |
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get_checksum = lambda d: str(11 - sum([int(digit) * int(control) for digit, control in zip(d, control_str)]) % 11).replace('10', '1').replace('11', '0') |
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if get_checksum('00' + entity + office) + get_checksum(account) == checksum: |
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159 |
return value |
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160 |
else: |
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raise ValidationError, self.error_messages['checksum'] |
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162 |
|
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class ESRegionSelect(Select): |
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""" |
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A Select widget that uses a list of spanish regions as its choices. |
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166 |
""" |
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def __init__(self, attrs=None): |
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from es_regions import REGION_CHOICES |
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super(ESRegionSelect, self).__init__(attrs, choices=REGION_CHOICES) |
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170 |
|
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class ESProvinceSelect(Select): |
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""" |
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A Select widget that uses a list of spanish provinces as its choices. |
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""" |
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def __init__(self, attrs=None): |
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from es_provinces import PROVINCE_CHOICES |
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super(ESProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES) |
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178 |
|
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179 |
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def cif_get_checksum(number): |
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s1 = sum([int(digit) for pos, digit in enumerate(number) if int(pos) % 2]) |
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s2 = sum([sum([int(unit) for unit in str(int(digit) * 2)]) for pos, digit in enumerate(number) if not int(pos) % 2]) |
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return (10 - ((s1 + s2) % 10)) % 10 |
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184 |