Python Coding challenge - Day 953| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class Config:

    timeout = 30

A class named Config is defined.

timeout is a class attribute (shared by all instances unless overridden).

So initially:

Config.timeout = 30

2. Creating Two Objects

c1 = Config()

c2 = Config()

Two instances of Config are created: c1 and c2.

At this point:

c1.__dict__ = {}

c2.__dict__ = {}

Both read timeout from the class.

3. Assigning to c1.timeout

c1.timeout = 10

This does not change the class variable.

Instead, it creates a new instance attribute on c1.

Now:

c1.__dict__ = {"timeout": 10}

Config.timeout = 30

4. Printing the Values

print(Config.timeout, c1.timeout, c2.timeout)

Python resolves each attribute:

▶ Config.timeout

Looks on the class → 30

▶ c1.timeout

Finds instance attribute → 10

▶ c2.timeout

No instance attribute, so looks on the class → 30

5. Final Output

30 10 30

Final Answer

✔ Output:

30 10 30

500 Days Python Coding Challenges with Explanation