Test: Loops - 1 - EmSAT Achieve MCQ

Loops in Python are used to repeat a block of code a specified number of times.

The range() function in Python generates a sequence of numbers that can be used in loops.

The break statement in Python exits the loop completely, while the continue statement skips the current iteration and continues with the next one.

The while loop in Python allows you to execute a block of code as long as a condition is true.

An infinite loop can be created in Python by using a while loop with a condition that is always true.

The pass statement in Python does nothing and acts as a placeholder when a statement is required syntactically but no action is needed.

If the condition in a while loop is initially False, the loop is skipped entirely.

To exit a loop prematurely in Python, the break statement is used.

The loop iterates over the range of numbers from 0 to 4. When i equals 2, the break statement is executed, causing the loop to exit prematurely.

The while loop runs indefinitely since the condition True is always true. However, the break statement inside the loop causes it to exit after the first iteration, and then the "World" is printed.

The while loop iterates as long as x is greater than 0. In each iteration, the value of x is printed, and then it is decremented by 1.

The for loop iterates over the range of numbers from 1 to 5. When i equals 3, the break statement is executed, causing the loop to exit prematurely.

The for loop iterates over the range of numbers from 1 to 5. When i equals 3, the continue statement is executed, skipping the rest of the loop body for that iteration.

The outer for loop iterates from 0 to 2, and the inner for loop iterates from 0 to 2. However, when j equals 1, the break statement is executed, causing the inner loop to exit.

The outer for loop iterates from 0 to 2, and the inner for loop iterates from 0 to 2. However, when j equals 1, the continue statement is executed, skipping the rest of the inner loop body for that iteration.

The pass statement does nothing, so the loop continues normally. The numbers from 0 to 4 are printed.

The while loop iterates as long as i is less than 5. When i equals 3, the break statement is executed, causing the loop to exit prematurely. Since the else block is associated with the while loop, it is not executed.

Here's the step-by-step execution:

1. The loop starts with i = 0 and the range is from 0 to 4 (inclusive).
2. For i = 0, the if condition (i == 3) is false, so it prints 0.
3. For i = 1, the if condition (i == 3) is false, so it prints 1.
4. For i = 2, the if condition (i == 3) is false, so it prints 2.
5. For i = 3, the if condition (i == 3) is true, so the break statement is executed, and the loop terminates immediately.
6. The else block associated with the for loop is not executed because the loop was terminated by the break statement.

Therefore, the output of the code snippet is:

1. 0 1 2

The for loop iterates over the range of numbers from 0 to 4. When i equals 2, the pass statement is executed, doing nothing. Since the else block is associated with the for loop, it is executed after the loop finishes.

The for loop iterates over the range of numbers from 0 to 4. When i equals 2, the break statement is executed, causing the loop to exit prematurely. Since the loop is terminated with a break, the else block is not executed. Thus, the output of the code snippet is "0 1".