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25 lines
612 B
Python
25 lines
612 B
Python
class NoopIsANoopException(TypeError):
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"""
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Raised if the nooper decorator is unnecessary on a class.
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"""
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pass
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def nooper(cls):
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"""
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Decorates a class that derives from an ABCMeta, filling in any unimplemented methods with no-
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ops.
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"""
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def empty_func(*args, **kwargs):
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# pylint: disable=unused-argument
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pass
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empty_methods = {m_name: empty_func for m_name in cls.__abstractmethods__}
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if not empty_methods:
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raise NoopIsANoopException("nooper implemented no abstract methods on %s" % cls)
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return type(cls.__name__, (cls,), empty_methods)
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