stdnum.fi.ytunnus¶
Y-tunnus (Finnish business identifier).
The number is an 8-digit code with a weighted checksum.
>>> validate('2077474-0')
'20774740'
>>> validate('2077474-1') # invalid check digit
Traceback (most recent call last):
...
InvalidChecksum: ...
>>> format('2077474-0')
'2077474-0'
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stdnum.fi.ytunnus.
compact
(number)¶ Convert the number to the minimal representation. This strips the number of any valid separators and removes surrounding whitespace.
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stdnum.fi.ytunnus.
format
(number)¶ Reformat the number to the standard presentation format.
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stdnum.fi.ytunnus.
is_valid
(number)¶ Check if the number is a valid business identifier.
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stdnum.fi.ytunnus.
validate
(number)¶ Check if the number is a valid business identifier. This checks the length, formatting and check digit.