blob: b22c2aab3e2ff35736b7786d9ba5b1578734faa6 (
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
|
# util.py - common utility functions
#
# Copyright (C) 2012 Arthur de Jong
#
# 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
"""Common functions for other stdnum modules."""
def clean(number, deletechars):
"""Remove the specified characters from the supplied number.
>>> clean('123-456:78 9', ' -:')
'123456789'
"""
return ''.join(x for x in number if x not in deletechars)
def digitsum(numbers):
"""Returns the sum of the individual digits of the provided numbers.
>>> digitsum([12, 55])
13
"""
# note: this only works for two-digit numbers
return sum((x // 10) + (x % 10) for x in numbers)
|