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"""
Tools to update the ISO registry.
"""
def iso_register(iso_code):
"""
Registers Calendar class as country or region in IsoRegistry.
Registered country must set class variables ``iso`` using this decorator.
>>> from calendra.core import Calendar
>>> from calendra.registry import registry
>>> from calendra.registry_tools import iso_register
>>> @iso_register('MC-MR')
... class MyRegion(Calendar):
... 'My Region'
Region calendar is then retrievable from registry:
>>> calendar = registry.get('MC-MR')
"""
def wrapper(cls):
from calendra.registry import registry
registry.register(iso_code, cls)
return cls
return wrapper
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