Determine if given class attribute is a property or not, Python object

Question

It\'s all in the title. Here is the following example:

class A(object):
    my_var = 5

    def my_method(self, drink=\'beer\'):
        return \'I like %s\'         


        

Answer 1

You need to look at the class (this is the case for descriptors in general), which for objects you can find via the __class__ attribute or by using the type function:

>>> obj.__class__.my_property

or by

>>> type(obj).my_property

These result in the same "property object" as if you were to directly check the attribute of the class (implying you know the class' name in your code instead of checking it dynamically like you probably should rather do):

>>> A.my_property

So to test if a specific attribute of an object is a property, this would be one solution:

>>> isinstance(type(obj).my_property, property)
True