Understanding Descriptors in Python: Customizing Attribute Access
In Python, descriptors are used to customize attribute access.
A descriptor is any object that implements one or more of the descriptor methods (__get__, __set__, __delete__).
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Question: Understanding Descriptors in Python: Customizing Attribute Access
What will be the output of the following?
class DescriptorExample:
def __get__(self, instance, owner):
return 'Descriptor value'
class MyClass:
attr = DescriptorExample()
obj = MyClass()
print(obj.attr)Answer: A
The DescriptorExample class defines the __get__ method, which is part of Python’s descriptor protocol.
When you try to access obj.attr, Python calls the __get__ method of the descriptor (because attr is an instance of DescriptorExample), which returns the string 'Descriptor value'.
