reversed() function in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to reverse the list using the reversed() function.

Python

numbers = [1, 2, 3, 4, 5]
reversed_numbers = list([1](numbers))
print(reversed_numbers)

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

Areverse

Breversed

Csort

Dappend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'reverse' which is a list method, not a function.

Using 'sort' which sorts the list, not reverses it.

The reversed() function returns an iterator that accesses the given sequence in the reverse order. Wrapping it with list() converts it back to a list.

2fill in blank

medium

Complete the code to print each character of the string in reverse order using reversed().

Python

word = "hello"
for char in [1](word):
    print(char, end='')

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Asort

Breverse

Creversed

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to use 'reverse' which is not a function.

Using 'list' which converts to list but does not reverse.

The reversed() function can be used on strings to get an iterator that yields characters in reverse order.

3fill in blank

hard

Fix the error in the code to correctly reverse the tuple using reversed().

Python

data = (10, 20, 30)
reversed_data = [1](data)
print(tuple(reversed_data))

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Areverse

Blist

Csort

Dreversed

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'reverse' which is a list method, not available for tuples.

Using 'sort' which is not valid for tuples.

The reversed() function works on tuples and returns an iterator. The reverse() method does not exist for tuples.

4fill in blank

hard

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

Python

words = ['apple', 'bat', 'carrot', 'dog']
lengths = [1]: len(word) for word in words if len(word) [2] 3

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A{word

B>

C>=

D[word

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of curly braces for dictionary.

Using '>=' instead of '>' which includes words of length 3.

The dictionary comprehension syntax requires curly braces and a colon. The condition filters words longer than 3 characters using '>'.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase words as keys and their lengths as values, only for words longer than 3 characters.

Python

words = ['apple', 'bat', 'carrot', 'dog']
result = [1]: [2] for word in words if len(word) [3] 3

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A{word.upper()

Blen(word)

C>

D[word.upper()

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of curly braces for dictionary.

Not converting words to uppercase for keys.

Using '>=' instead of '>' in the condition.

The dictionary comprehension uses curly braces with uppercase words as keys and their lengths as values. The condition filters words longer than 3 characters using '>'.