PCEP Section 2B: Perform different types of iterations

Which Python statement is used as a placeholder in loops or functions when no action is required?

• continue

• pass

• break

• skip

What is the output of the following code? ```python for i in range(3): print(i) ```

• 1 2 3

• 0 1 2

• 0 1 2 3

• 1 2

Which keyword is used to immediately exit a loop in Python?

• exit

• break

• stop

• continue

Which of the following is a valid way to iterate through all elements in a list called `my_list`?

• for i in my_list:

• for i = my_list:

• for i to my_list:

• for i from my_list:

What does the `continue` statement do inside a loop?

• Exits the loop completely

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

• Ends the program

• Repeats the current iteration

Which of the following best describes the use of `while-else` in Python?

• The else block executes only if the while loop is never entered.

• The else block executes only if the while loop is terminated by a break statement.

• The else block executes only if the while loop completes normally (not terminated by break).

• The else block always executes after the while loop.

Given the following code, what will be the output? ```python for i in range(2): for j in range(2): print(i, j) ```

• (0,0) (1,1)

• (0,0) (0,1) (1,0) (1,1)

• (0,1) (1,0)

• (0,0) (1,0) (0,1) (1,1)

Which of the following loops will print numbers from 5 to 1 (inclusive) in descending order?

• for i in range(1, 6): print(i)

• for i in range(5, 0, -1): print(i)

• for i in range(5): print(i)

• for i in range(1, 6, -1): print(i)

What will be the output of the following code? ```python x = 0 while x < 3: x += 1 if x == 2: continue print(x) ```

• 1 2 3

• 1 3

• 2 3

• 1 2

Which of the following best describes a nested loop?

• A loop that runs only once

• A loop inside another loop

• A loop that never ends

• A loop with a break statement