1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
# edb.py - functions for handling North Macedonia EDB 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
"""ЕДБ (Едниствен Даночен Број, North Macedonia tax number).
This number consists of 13 digits, sometimes with an additional "MK" prefix.
More information:
* http://www.ujp.gov.mk/en
>>> validate('4030000375897')
'4030000375897'
>>> validate('МК 4020990116747') # Cyrillic letters
'4020990116747'
>>> validate('MK4057009501106') # ASCII letters
'4057009501106'
>>> validate('4030000375890')
Traceback (most recent call last):
...
InvalidChecksum: ...
>>> format('МК 4020990116747') # Cyrillic letters
'4020990116747'
>>> format('MK4057009501106') # ASCII letters
'4057009501106'
"""
from stdnum.exceptions import *
from stdnum.util import clean, isdigits
def compact(number):
"""Convert the number to the minimal representation.
This strips the number of any valid separators and removes surrounding
whitespace.
"""
number = clean(number, ' -').upper().strip()
# First two are ASCII, second two are Cyrillic and only strip matching
# types to avoid implicit conversion to unicode strings in Python 2.7
for prefix in ('MK', u'MK', 'МК', u'МК'):
if isinstance(number, type(prefix)) and number.startswith(prefix):
number = number[len(prefix):]
return number
def calc_check_digit(number):
"""Calculate the check digit."""
weights = (7, 6, 5, 4, 3, 2, 7, 6, 5, 4, 3, 2)
total = sum(int(n) * w for n, w in zip(number, weights))
return str((-total % 11) % 10)
def validate(number):
"""Check if the number is a valid North Macedonia ЕДБ number.
This checks the length, formatting and check digit.
"""
number = compact(number)
if len(number) != 13:
raise InvalidLength()
if not isdigits(number):
raise InvalidFormat()
if number[-1] != calc_check_digit(number):
raise InvalidChecksum()
return number
def is_valid(number):
"""Check if the number is a valid North Macedonia ЕДБ number."""
try:
return bool(validate(number))
except ValidationError:
return False
def format(number):
"""Reformat the number to the standard presentation format."""
return compact(number)
|