8000 Fix Czech DIČ check digit calculation · waldemar-becker/python-stdnum@2cc39ea · GitHub
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Commit 2cc39ea

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arthurdejongarthurdejong
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Fix Czech DIČ check digit calculation
This fixes a bug in the check digit calculation for the 9-digit numbers that start with a 6 for individuals without a RČ. This also adds a few tests for Czech VAT numbers. See arthurdejong#51
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+15
-3
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2 files changed

+15
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‎stdnum/cz/dic.py

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
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# dic.py - functions for handling Czech VAT numbers
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# coding: utf-8
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#
4-
# Copyright (C) 2012, 2013 Arthur de Jong
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# Copyright (C) 2012-2017 Arthur de Jong
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
@@ -64,8 +64,8 @@ def calc_check_digit_legal(number):
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def calc_check_digit_special(number):
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"""Calculate the check digit for special cases. The number passed
6666
should not have the first and last digits included."""
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check = (11 - sum((8 - i) * int(n) for i, n in enumerate(number))) % 11
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return str(9 - check % 10)
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check = sum((8 - i) * int(n) for i, n in enumerate(number)) % 11
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return str((8 - (10 - check) % 11 ) % 10)
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def validate(number):

‎tests/test_eu_vat.doctest

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Original file line numberDiff line numberDiff line change
@@ -103,16 +103,28 @@ These have been found online and should all be valid numbers.
103103
... CZ 25123891
104104
... CZ 25577581
105105
... CZ 26852357
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... CZ 60 72 77 72
106107
... CZ 61467839
107108
... CZ 640229/4448
108109
... CZ 640903926
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... CZ 64628060
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... CZ 654123789
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... CZ 682127228
109113
... CZ 6956220612
110114
... CZ 736028/5163
111115
... CZ 8058012314
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... CZ00023205
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... CZ24158313
112118
... CZ26780259
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... CZ450 33 145
113120
... CZ48207926
114121
... CZ49620819
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... CZ6011270177
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... CZ6109220348
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... CZ61989100
115125
... CZ6306150004
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... CZ7205151536
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... CZ7652046248
116128
...
117129
... DE - 113866163
118130
... DE - 231969187

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