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I'm in a situation where it would be extremely useful (though not strictly necessary) to access a class' instancemethod as an attribute. (it's for an API that uses getattr to set some return values for a dictionary and I don't want to mess the neat little thing up)
I remember reading something about an @attribute decorator, but I can't find one (either in Python or Django)
TL;DR:
How do I make this:
class foo: bar = "bar" def baz(self): return "baz" do this:
>>> f = foo() >>> f.baz "baz" (edit for clarity) instead of this:
>>> f = foo() >>> f.baz <bound method foo.baz of <__builtin__.foo instance at 0x...>> 
302
To call a function within class with Python, we call the function with self before it. We call the distToPoint instance method within the Coordinates class by calling self. distToPoint . self is variable storing the current Coordinates class instance.
The attribute A.f was defined as part of the class. It is a function, so it is by default an instance method of that class. Creating an instance (named a ) of class A causes that instance to have an attribute f , and you access that by the name a.f .
In python, functions too are objects. So they have attributes like other objects. All functions have a built-in attribute __doc__, which returns the doc string defined in the function source code. We can also assign new attributes to them, as well as retrieve the values of those attributes.
You can use the @property decorator.
class foo(object): bar = "bar" @property def baz(self): return "baz" Take a look at the decorator form of property.
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