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# __init__.py - collection of Tunisian numbers | ||
# coding: utf-8 | ||
# | ||
# Copyright (C) 2022 Leandro Regueiro | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 2.1 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
# 02110-1301 USA | ||
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"""Collection of Tunisian numbers.""" | ||
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# provide aliases | ||
from stdnum.tn import mf as vat # noqa: F401 |
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# pin.py - functions for handling Tunisia MF numbers | ||
# coding: utf-8 | ||
# | ||
# Copyright (C) 2022 Leandro Regueiro | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 2.1 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
# 02110-1301 USA | ||
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"""MF (Matricule Fiscal, Tunisia tax number). | ||
The MF consists of 4 parts: the "identifiant fiscal", the "code TVA", the "code | ||
catégorie" and the "numéro d'etablissement secondaire". | ||
The "identifiant fiscal" consists of 2 parts: the "identifiant unique" and the | ||
"clef de contrôle". The "identifiant unique" is composed of 7 digits. The "clef | ||
de contrôle" is a letter, excluding "I", "O" and "U" because of their | ||
similarity to "1", "0" and "4". | ||
The "code TVA" is a letter that tells which VAT regime is being used. The valid | ||
values are "A", "P", "B", "D" and "N". | ||
The "code catégorie" is a letter that tells the category the contributor | ||
belongs to. The valid values are "M", "P", "C", "N" and "E". | ||
The "numéro d'etablissement secondaire" consists of 3 digits. It is usually | ||
"000", but it can be "001", "002"... depending on the branches. If it is not | ||
"000" then "code catégorie" must be "E". | ||
More information: | ||
* https://futurexpert.tn/2019/10/22/structure-et-utilite-du-matricule-fiscal/ | ||
* https://www.registre-entreprises.tn/ | ||
>>> validate('1234567/M/A/E/001') | ||
'1234567MAE001' | ||
>>> validate('1282182 W') | ||
'1282182W' | ||
>>> validate('121J') | ||
'0000121J' | ||
>>> validate('1219773U') | ||
Traceback (most recent call last): | ||
... | ||
InvalidFormat: ... | ||
>>> validate('1234567/M/A/X/000') | ||
Traceback (most recent call last): | ||
... | ||
InvalidFormat: ... | ||
>>> format('121J') | ||
'0000121/J' | ||
>>> format('1496298 T P N 000') | ||
'1496298/T/P/N/000' | ||
""" | ||
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import re | ||
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from stdnum.exceptions import * | ||
from stdnum.util import clean, isdigits | ||
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_VALID_CONTROL_KEYS = ('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', | ||
'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'V', 'W', 'X', 'Y', | ||
'Z') | ||
_VALID_TVA_CODES = ('A', 'P', 'B', 'D', 'N') | ||
_VALID_CATEGORY_CODES = ('M', 'P', 'C', 'N', 'E') | ||
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def compact(number): | ||
"""Convert the number to the minimal representation. | ||
This strips the number of any valid separators, removes surrounding | ||
whitespace. | ||
""" | ||
number = clean(number, ' /.-').upper() | ||
# Zero pad the numeric serial to length 7 | ||
match = re.match(r'^(?P<serial>[0-9]+)(?P<rest>.*)$', number) | ||
if match: | ||
number = match.group('serial').zfill(7) + match.group('rest') | ||
return number | ||
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def validate(number): | ||
"""Check if the number is a valid Tunisia MF number. | ||
This checks the length and formatting. | ||
""" | ||
number = compact(number) | ||
if len(number) not in (8, 13): | ||
raise InvalidLength() | ||
if not isdigits(number[:7]): | ||
raise InvalidFormat() | ||
if number[7] not in _VALID_CONTROL_KEYS: | ||
raise InvalidFormat() | ||
if len(number) == 8: | ||
return number | ||
if number[8] not in _VALID_TVA_CODES: | ||
raise InvalidFormat() | ||
if number[9] not in _VALID_CATEGORY_CODES: | ||
raise InvalidFormat() | ||
if not isdigits(number[10:]): | ||
raise InvalidFormat() | ||
if number[10:] != '000' and number[9] != 'E': | ||
raise InvalidFormat() | ||
return number | ||
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def is_valid(number): | ||
"""Check if the number is a valid Tunisia MF number.""" | ||
try: | ||
return bool(validate(number)) | ||
except ValidationError: | ||
return False | ||
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def format(number): | ||
"""Reformat the number to the standard presentation format.""" | ||
result = compact(number) | ||
if len(result) == 8: | ||
return '/'.join([result[:7], result[7]]) | ||
return '/'.join([result[:7], result[7], result[8], result[9], result[10:]]) |
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