Python Coding challenge - Day 1029| What is the output of the following Python Code?

 

1️⃣ Class Definition

class Guard:

This line defines a class named Guard.

A class is a blueprint for creating objects.

2️⃣ Overriding __getattribute__

    def __getattribute__(self, name):

__getattribute__ is a special (magic) method in Python.

It is called automatically every time you try to access any attribute of an object.

self → the current object (g)

name → the attribute name being accessed (like "open")

⚠️ This method runs before Python checks normal attributes.

3️⃣ Checking the Attribute Name

        if name == "open":

Python checks if the attribute being accessed is named "open".

4️⃣ Returning a Value

            return "allowed"

If the attribute name is "open", the method returns the string "allowed".

This means g.open will not look for a real attribute—it just returns "allowed".

5️⃣ Raising an Error for Other Attributes

        raise AttributeError

If any other attribute is accessed (like g.close, g.x, etc.),

Python raises an AttributeError.

This tells Python: “This attribute does not exist.”

6️⃣ Creating an Object

g = Guard()

This creates an object g from the Guard class.

7️⃣ Accessing the Attribute

print(g.open)

What happens internally:

Python sees g.open

Calls g.__getattribute__("open")

"open" matches the condition

Returns "allowed"

print() prints it

✅ Final Output

allowed

400 Days Python Coding Challenges with Explanation