8000 Add some new VAT numbers for GB · sharoonthomas/python-stdnum@a148835 · GitHub
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Add some new VAT numbers for GB
Add support for restarting from November 2009 using 9755. Add support for EU format of health authorities See: arthurdejong#4
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2 files changed

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‎stdnum/gb/vat.py

Lines changed: 20 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -70,13 +70,31 @@ def validate(number):
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pass
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else:
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raise InvalidComponent()
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elif len(number) == 11 and number[0:6] in ('GD8888', 'HA8888'):
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if not number[6:].isdigit():
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raise InvalidFormat()
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if number.startswith('GD') and int(number[6:9]) < 500:
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# government department
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pass
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elif number.startswith('HA') and int(number[6:9]) >= 500:
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# health authority
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pass
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else:
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raise InvalidComponent()
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if int(number[6:9]) % 97 != int(number[9:11]):
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raise InvalidChecksum()
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elif len(number) in (9, 12):
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if not number.isdigit():
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raise InvalidFormat()
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# standard number: nnn nnnn nn
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# branch trader: nnn nnnn nn nnn (ignore the last thee digits)
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if checksum(number[:9]) not in (0, 42):
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raise InvalidChecksum()
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# restarting: 100 nnnn nn
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if int(number[:3]) >= 100:
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if checksum(number[:9]) not in (0, 42, 55):
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raise InvalidChecksum()
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else:
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if checksum(number[:9]) != 0:
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raise InvalidChecksum()
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else:
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raise InvalidLength< 10000 /span>()
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return number

‎tests/test_gb_vat.doctest

Lines changed: 30 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -29,12 +29,18 @@ Normal values that should just work.
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>>> vat.validate('980780684') # standard number
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'980780684'
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>>> vat.validate('100190874') # standard number restarting
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'100190874'
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>>> vat.validate('242338087388') # branch trader
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'242338087388'
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>>> vat.validate('GD100') # government department
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'GD100'
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>>> vat.validate('HA501') # health authority
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'HA501'
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>>> vat.validate('GD888810003') # government department for EU
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'GD888810003'
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>>> vat.validate('HA888856782') # health authority for EU
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'HA888856782'
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Invalid long numbers:
@@ -51,6 +57,14 @@ InvalidLength: ...
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Traceback (most recent call last):
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...
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InvalidFormat: ...
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>>> vat.validate('GD8888567B2') # invalid digit for EU health authority
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Traceback (most recent call last):
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...
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InvalidFormat: ...
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>>> vat.validate('001234567') # invalid checksum
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Traceback (most recent call last):
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...
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InvalidChecksum: ...
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Some variations on the short format:
@@ -69,6 +83,22 @@ Traceback (most recent call last):
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InvalidComponent: ...
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Some variations on the EU format:
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>>> vat.validate('GD888860018') # government department with high number
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Traceback (most recent call last):
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...
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InvalidComponent: ...
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>>> vat.validate('HA888820107') # health authority with low number
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Traceback (most recent call last):
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...
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InvalidComponent: ...
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>>> vat.validate('HA888856700') # health authority with invalid checksum
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Traceback (most recent call last):
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...
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InvalidChecksum: ...
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Formatting tests:
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>>> vat.format('980780684') # standard number

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