Why strings are used in Python - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a string variable named greeting with the value 'Hello'.

Python

greeting = [1]

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

A"Hello"

B123

CHello

DTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to use quotes around the text.

Using a number or boolean instead of text.

Strings are written inside quotes. Here, "Hello" is a string.

2fill in blank

medium

Complete the code to print the string stored in the variable message.

Python

message = "Welcome"
print([1])

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

Amessage

Bprint

C"message"

DWelcome

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around the variable name, which prints the name itself.

Trying to print the text directly without using the variable.

To print the value of a variable, use its name without quotes inside print().

3fill in blank

hard

Fix the error in the code to concatenate two strings stored in variables first and last.

Python

first = "John"
last = "Doe"
full_name = first [1] last
print(full_name)

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

A-

B+

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using arithmetic operators like - or * which cause errors with strings.

Forgetting to use an operator between the variables.

The plus sign (+) joins two strings together in Python.

4fill in blank

hard

Fill both blanks to create a dictionary with words as keys and their lengths as values.

Python

words = ["apple", "bat", "car"]
lengths = {word: [1] for word in words if len(word) [2] 3}

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

Alen(word)

B>

C<

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself instead of its length as the dictionary value.

Using < instead of > which changes the filter condition.

len(word) gets the length of each word. The condition filters words longer than 3 letters.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase words as keys and their lengths as values for words longer than 2 letters.

Python

words = ["dog", "cat", "a"]
result = { [1]: [2] for w in words if len(w) [3] 2 }

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

Aw.upper()

Blen(w)

C>

Dw

Attempts:

3 left

💡 Hint

Common Mistakes

Using w instead of w.upper() for keys.

Using < instead of > which changes the filter.

Using w instead of len(w) for values.

w.upper() converts words to uppercase for keys, len(w) gives their length, and > 2 filters words longer than 2 letters.