Python Coding challenge - Day 1112| What is the output of the following Python Code?

 

Code Explanation:

1️⃣ Importing Threading Module

import threading

Explanation

Imports Python’s threading module.

Used to create and run threads.

2️⃣ Global Variable Declaration

x = 0

Explanation

A global variable x is created.

Initial value:

x = 0

3️⃣ Defining Task Function

def task():

Explanation

Function task will run inside the thread.

4️⃣ Local Variable Inside Function

x = 10

Explanation ⚠️ IMPORTANT

This creates a local variable x inside the function.

It does NOT affect the global variable.

👉 So:

global x = 0   (unchanged)

local x = 10   (inside function only)

5️⃣ Creating Thread

t = threading.Thread(target=task)

Explanation

A thread t is created.

It will execute the task() function.

6️⃣ Starting Thread

t.start()

Explanation

Thread starts executing task().

Inside thread:

x = 10   (local variable)

Global x remains unchanged.

7️⃣ Waiting for Thread to Finish

t.join()

Explanation

Main thread waits until task() completes.

8️⃣ Printing Value

print(x)

Explanation

Prints the global variable x.

Since global x was never modified:

📤 Final Output

0

Book:  500 Days Python Coding Challenges with Explanation