Saturday, 21 June 2025

Python Coding Challange - Question with Answer (01210625)

Python Coding June 21, 2025 Python Quiz No comments

Step-by-Step Execution:

Function Definition
```
def gen():
    yield 10
```
- This defines a generator function.
- The keyword yield makes gen() return a generator object, not a regular value.
Create Generator
```
g = gen()
```
- Now, g is a generator object that will produce values when next(g) is called.
First next(g)
```
next(g)
```
- This starts the generator.
- It runs the function up to the first yield, which is:
```
yield 10
```
- So it yields 10, and pauses.
Second next(g)
```
next(g)
```
- The generator resumes after the yield.
- But there's nothing left in the function.
- So it raises a StopIteration exception.

What Happens When You Run It?

First next(g) → works, returns 10.
Second next(g) → raises:
```
StopIteration
```

✅ Visual Summary:


def gen():
    yield 10 ← (1st call yields 10)
    ↑ paused here

-- 2nd next(g) resumes here
-- But function is over ⇒ StopIteration

✅ Final Advice:

If you want to handle it safely:


g = gen()
print(next(g))
try:
   print(next(g))
except StopIteration: 
    print("Generator exhausted")

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