Python Coding challenge - Day 1171| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Generator Function Definition

def gen():

✅ Explanation:

A function named gen() is created.

Since it contains yield, it becomes a generator function.

Calling it will return a generator object.

🔹 2. First Yield Statement

x = yield 1

✅ Explanation:

This line does two things:

Yields value:

1

Pauses execution and waits for a value to be sent back.

The sent value will later be stored in:

x

🔹 3. Second Yield Statement

yield x + 5

✅ Explanation:

After receiving a value through send(),

Python calculates:

x + 5

and yields the result.

🔹 4. Creating Generator Object

g = gen()

✅ Explanation:

Generator function is called.

But code inside does NOT run immediately.

Instead:

g

stores a generator object.

Something like:

<generator object gen at 0x...>

\🔹 5. First Execution

print(next(g))

✅ Explanation:

next(g) starts the generator.

Execution enters:

x = yield 1

Generator Yields

1

and pauses.

At this point:

x

has NOT received any value yet.

Output

1

🔹 6. Sending a Value

print(g.send(10))

✅ Explanation:

send(10) resumes generator execution.

The value:

10

is sent back into:

x = yield 1

So now:

x = 10

🔹 7. Executing Next Line

Generator continues:

yield x + 5

Substitute:

yield 10 + 5

Calculation:

15

Generator yields:

15

🔹 8. Printing Result

print(g.send(10))

prints:

15

🎯 Final Output

1

15