Python Control Flow: Loops 2

Question 1

What does the `else` clause of a `for` loop execute?

Accepted Answer

Only if the loop completed without a `break`

Answer

Only if the loop body raised an exception

Answer

Only if the loop ran zero iterations

Answer

Only if the loop ran at least one iteration

Question 2

What is the output of: `for i in range(3): print(i, end=' ')`?

Accepted Answer

0 1 2

Answer

1 2 3

Answer

0 1 2 3

Answer

1 2

Question 3

Which loop construct is most appropriate when the number of iterations is unknown ahead of time?

Accepted Answer

`while` loop

Answer

`for` loop with `range()`

Answer

`for` loop with `enumerate()`

Answer

`for` loop with `zip()`

Question 4

What happens if the condition of a `while` loop is never `False`?

Accepted Answer

The loop runs indefinitely (infinite loop)

Answer

Python raises a `RuntimeError`

Answer

The loop exits after 1000 iterations

Answer

The `else` block executes immediately

Question 5

What does `continue` do inside a loop?

Accepted Answer

Skips the rest of the current iteration and moves to the next

Answer

Exits the loop immediately

Answer

Restarts the loop from the beginning

Answer

Pauses execution until a condition is met

Question 6

Given `x = 0`, what does `while x < 5: x += 2` leave `x` as after the loop?

Accepted Answer

6

Answer

4

Answer

5

Answer

2

Question 7

What is the output of: `for i in range(10, 0, -3): print(i, end=' ')`?

Accepted Answer

10 7 4 1

Answer

10 7 4

Answer

9 6 3

Answer

10 8 6 4 2