Code Explanation:
1. Class Definition
class A:
This line defines a class named A.
A class is a blueprint for creating objects.
2. Overriding __getattribute__ Method
def __getattribute__(self, name):
__getattribute__ is a special (magic) method in Python.
It is called every time an attribute of an object is accessed.
self → the current object (a)
name → the name of the attribute being accessed (as a string)
3. Checking the Attribute Name
if name == "ok":
This line checks whether the requested attribute name is "ok".
4. Returning a Custom Value
return "yes"
If the attribute name is "ok", the method returns the string "yes".
This means a.ok will not look for a real attribute — it directly returns "yes".
5. Raising an Error for Other Attributes
raise AttributeError
If the attribute name is not "ok", an AttributeError is raised.
This tells Python that the attribute does not exist.
Without this, Python’s normal attribute lookup would break.
6. Creating an Object
a = A()
An object a is created from class A.
7. Accessing the Attribute
print(a.ok)
Python calls a.__getattribute__("ok").
Since the name is "ok", the method returns "yes".
print() outputs the returned value.
8. Final Output
yes

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