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# from Pyramid
class reify(object):
"""Put the result of a method which uses this (non-data)
descriptor decorator in the instance dict after the first call,
effectively replacing the decorator with an instance variable.
"""
def __init__(self, wrapped):
self.wrapped = wrapped
self.__doc__ = wrapped.__doc__
def __get__(self, inst, objtype=None):
if inst is None:
return self
val = self.wrapped(inst)
setattr(inst, self.wrapped.__name__, val)
return val
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