blob: b2246db83446dc96ee0a4c6428403db63453c456 (
plain)
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
|
# postnummer.py - functions for handling Swedish postal codes
#
# Copyright (C) 2021 Michele Ciccozzi
#
# 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
"""Postcode (the Swedish postal code).
The Swedish postal code consists of three numbers followed by two numbers,
separated by a single space.
More information:
* https://en.wikipedia.org/wiki/Postal_codes_in_Sweden
* https://sv.wikipedia.org/wiki/Postnummer_i_Sverige
>>> validate('114 18')
'11418'
>>> validate('SE-11418')
'11418'
>>> validate('1145 18')
Traceback (most recent call last):
...
InvalidLength: ...
>>> format('11418')
'114 18'
"""
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()
if number.startswith('SE'):
number = number[2:]
return number
def validate(number):
"""Check if the number is in the correct format. This currently does not
check whether the code corresponds to a real address."""
number = compact(number)
if not isdigits(number) or number.startswith('0'):
raise InvalidFormat()
if len(number) != 5:
raise InvalidLength()
return number
def is_valid(number):
"""Check if the number is a valid postal code."""
try:
return bool(validate(number))
except ValidationError:
return False
def format(number):
"""Reformat the number to the standard presentation format."""
number = compact(number)
return '%s %s' % (number[:3], number[3:])
|