Hybrid-Attributes implements a hybrid_property and hybrid_method descriptor, which call the underlying function both in a class and instance context.
Assume you have a class like:
class Foo: @classmethod def spam(self): return 'spam' @property def eggs(self): return 'eggs' def ham(self): return 'ham'
You can get the values returned by calling .spam() on the class, accessing ‘.eggs’ or calling .ham() on an instance:
>>> Foo.spam() 'spam' >>> foo = Foo() >>> foo.eggs 'eggs' >>> foo.ham() 'ham'
If you access these in a different context, .spam() will still be called with the class as first argument, .eggs will return a property object only useful for introspection and .ham() will raise an exception because there is no instance for it to be called with.
Hybrid-Attributes are different. They don’t care about the object are accessed through, the underlying function will always be called with whatever object it’s being accessed on. As an example, take this class:
class HybridFoo: @hybrid_property def spam(self): return 'spam' @hybrid_method def eggs(self): return 'eggs'
You can access the property and call the method on the class or on an instance:
>>> Foo.spam 'spam' >>> Foo.eggs() 'eggs' >>> foo = Foo() >>> foo.spam 'spam' >>> foo.eggs
Hybrid-Attributes is BSD licensed and available for Python 3.4 and later.
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