Python Coding challenge - Day 1116| What is the output of the following Python Code?

 

Code Explanation:

1️⃣ Defining Generator Function

def gen():

Explanation

A function gen is defined.

Because it uses yield, it becomes a generator.

It does NOT execute immediately.

2️⃣ First Yield Statement

x = yield 1

Explanation

This line does two things:

Yields value 1

Pauses execution and waits for a value to assign to x

3️⃣ Second Yield Statement

yield x * 2

Explanation

After receiving value in x, it:

returns x * 2

4️⃣ Creating Generator Object

g = gen()

Explanation

Creates a generator object g.

Function has NOT started yet.

5️⃣ First Call → next(g)

print(next(g))

Explanation

Starts execution of generator.

Runs until first yield.

👉 Executes:

yield 1

Returns:

1

Pauses at:

x = yield 1

(waiting for value)

6️⃣ Second Call → g.send(5)

print(g.send(5))

Explanation

Resumes generator.

Sends value 5 into generator.

👉 So:

x = 5

Now executes:

yield x * 2 → 5 * 2 = 10

Returns:

10

📤 Final Output

1

10

Book: 900 Days Python Coding Challenges with Explanation