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[utils] classproperty
: Add cache support
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@ -5847,14 +5847,23 @@ def wrapper(self, *args, **kwargs):
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class classproperty:
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"""property access for class methods"""
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"""property access for class methods with optional caching"""
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def __new__(cls, func=None, *args, **kwargs):
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if not func:
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return functools.partial(cls, *args, **kwargs)
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return super().__new__(cls)
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def __init__(self, func):
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def __init__(self, func, *, cache=False):
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functools.update_wrapper(self, func)
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self.func = func
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self._cache = {} if cache else None
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def __get__(self, _, cls):
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if self._cache is None:
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return self.func(cls)
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elif cls not in self._cache:
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self._cache[cls] = self.func(cls)
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return self._cache[cls]
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class Namespace(types.SimpleNamespace):
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