Python Control Flow: Loops 5

Question 1

What is the output of:
```
for i in range(1, 6):
    if i % 2 == 0:
        continue
    print(i, end=' ')
```

Accepted Answer

1 3 5

Answer

`continue` skips even numbers, so only odd numbers 1, 3, 5 are printed.

Question 2

What is the `_` variable commonly used for in a `for` loop like `for _ in range(5)`?

Accepted Answer

It indicates the loop variable is intentionally unused

Answer

By convention, `_` is used when the loop variable value is not needed in the loop body.

Question 3

What does `iter()` return when called on a list?

Accepted Answer

A list iterator object

Answer

`iter(list)` returns a list iterator that produces elements one at a time via `next()`.

Question 4

What is the output of:
```
result = [x for x in range(10) if x % 3 == 0]
print(result)
```

Accepted Answer

[0, 3, 6, 9]

Answer

Numbers from 0-9 divisible by 3 are 0, 3, 6, 9.

Question 5

In a `for` loop, what happens to the loop variable after the loop completes?

Accepted Answer

It retains the last value it was assigned

Answer

Python does not delete the loop variable after a `for` loop; it holds the last value from the iteration.

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