For loop execution model in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print each number from 1 to 3.

Python

for num in [1]:
    print(num)

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Arange(1, 4)

B[1, 2]

Clist(3)

D3

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 generates numbers 1, 2, and 3. The for loop prints each number.

2fill in blank

medium

Complete the code to sum all numbers from 1 to 5 using a for loop.

Python

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

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Atotal

Bi

Crange(1, 6)

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Adding the total to itself instead of the loop variable.

Using the range function inside the loop body.

Inside the loop, we add the current number i to total to get the sum.

3fill in blank

hard

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

Python

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

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Achar

Bword

Cletter

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name in the loop header and body.

Using the string variable name as the loop variable.

The loop variable should be letter because it is used inside the loop to print each character.

4fill in blank

hard

Fill both blanks to create a dictionary with words as keys and their lengths as values for words longer than 3 letters.

Python

lengths = { [1]: [2] for word in words if len(word) > 3 }

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Aword

Blen(word)

Cword.upper()

Dlen

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method like word.upper() as the key.

Using the function len without calling it.

The dictionary keys are the words themselves, and the values are their lengths using len(word).

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase words as keys, their lengths as values, only for words longer than 4 letters.

Python

result = { [1]: [2] for word in words if [3] }

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Aword.upper()

Blen(word)

Clen(word) > 4

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using the original word as key instead of uppercase.

Forgetting to call len(word) in the condition.

Using wrong comparison operators.

The keys are uppercase words using word.upper(), values are their lengths, and the condition filters words longer than 4 letters.