Why loops are needed in Python - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 3 using a loop.

Python

for i in [1]:
    print(i)

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A[1, 2]

Brange(1, 4)

C3

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single number instead of a range.

Using a list with fewer numbers than needed.

The range(1, 4) function creates numbers 1, 2, 3 for the loop to print.

2fill in blank

medium

Complete the code to calculate the sum of numbers from 1 to 5.

Python

total = 0
for num in range(1, 6):
    total [1] num
print(total)

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A+=

B*=

C-=

D/=

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction or multiplication instead of addition.

Forgetting to update the total inside the loop.

The += operator adds each number to the total, accumulating the sum.

3fill in blank

hard

Fix the error in the code to print each character in the word.

Python

word = 'hello'
for [1] in word:
    print(letter)

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Aletter

Bword

Cchar

Dletters

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name in the loop and print.

Using the whole word instead of a single character.

The loop variable should be letter to match the print statement.

4fill in blank

hard

Fill both blanks to create a dictionary of squares for numbers 1 to 4.

Python

squares = {x: x[1]2 for x in range(1, 5) if x [2] 3}
print(squares)

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A**

B>

C<

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of power.

Using wrong comparison operators.

** is used for power, and < filters numbers less than 3.

5fill in blank

hard

Fill all three blanks to create a dictionary of uppercase keys and values greater than 1.

Python

result = [1]: [2] for k, v in data.items() if v [3] 1}
print(result)

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Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Not converting keys to uppercase.

Using wrong comparison operator or variable names.

Keys are converted to uppercase with k.upper(), values are v, and filtered with > 1.