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implemented meta class AbstractAttrDefMeta for validation of key attribute

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iLLiCiTiT 2021-06-16 11:33:08 +02:00
parent 55d9bc1081
commit aa9d947614
1 changed files with 15 additions and 1 deletions
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16
openpype/pipeline/lib/attribute_definitions.py
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@ -4,7 +4,21 @@ from abc import ABCMeta, abstractmethod
import six
@six.add_metaclass(ABCMeta)
class AbstractAttrDefMeta(ABCMeta):
"""Meta class to validate existence of 'key' attribute.
Each object of `AbtractAttrDef` mus have defined 'key' attribute.
"""
def __call__(self, *args, **kwargs):
obj = super(AbstractAttrDefMeta, self).__call__(*args, **kwargs)
if not hasattr(obj, "key"):
raise TypeError("<{}> must have defined 'key' attribute.".format(
obj.__class__.__name__
))
return obj
@six.add_metaclass(AbstractAttrDefMeta)
class AbtractAttrDef:
"""Abstraction of attribute definiton.