While loop execution flow in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to run the loop while count is less than 5.

Python

count = 0
while count [1] 5:
    print(count)
    count += 1

Drag options to blanks, or click blank then click option'

A<

B>

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' causes the loop to never run.

Using '==' runs the loop only if count equals 5, which is not the goal.

The loop should continue while count is less than 5, so the condition is count < 5.

2fill in blank

medium

Complete the code to stop the loop when num reaches 10.

Python

num = 0
while num [1] 10:
    print(num)
    num += 2

Drag options to blanks, or click blank then click option'

A>

B<=

C<

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' causes the loop to run when num is 10, which may not be intended.

Using '>' or '>=' causes the loop to never run.

The loop should run while num is less than 10, so the condition is num < 10.

3fill in blank

hard

Fix the error in the loop condition to avoid an infinite loop.

Python

i = 5
while i [1] 0:
    print(i)
    i -= 1

Drag options to blanks, or click blank then click option'

A<=

B<

C>=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' causes the loop to never run.

Using '>=' or '<=' may cause off-by-one errors.

The loop should run while i is greater than 0, so the condition is i > 0. Using '<' would cause the loop to never run.

4fill in blank

hard

Fill both blanks to create a loop that prints numbers from 1 to 5.

Python

num = 1
while num [1] 5:
    print(num)
    num [2] 1

Drag options to blanks, or click blank then click option'

A<=

B+=

C-=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' excludes 5 from the output.

Using '-=' decreases num, causing an infinite loop.

The loop should run while num is less than or equal to 5, and num should increase by 1 each time.

5fill in blank

hard

Fill all three blanks to create a loop that prints even numbers from 2 to 10.

Python

start = [1]
end = [2]
while start [3] end:
    print(start)
    start += 2

Drag options to blanks, or click blank then click option'

A2

B10

C<=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' excludes the last number 10.

Starting at 0 or 1 prints unwanted numbers.

The loop starts at 2, ends at 10, and runs while start is less than or equal to end.