Searching and replacing text in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to replace all occurrences of 'cat' with 'dog' in the text.

Python

text = 'The cat sat on the cat mat.'
new_text = text.[1]('cat', 'dog')
print(new_text)

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

Areplace

Bfind

Csplit

Djoin

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'find' instead of 'replace' which only finds the position.

Using 'split' or 'join' which do not replace text directly.

The replace method replaces all occurrences of a substring with another substring.

2fill in blank

medium

Complete the code to replace only the first occurrence of 'apple' with 'orange'.

Python

text = 'apple banana apple grape'
new_text = text.[1]('apple', 'orange', 1)
print(new_text)

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

Acount

Bfind

Creplace

Dindex

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'find' which only locates the substring.

Using 'count' or 'index' which do not replace text.

The replace method can take a third argument to limit how many replacements happen.

3fill in blank

hard

Fix the error in the code to replace 'blue' with 'red' in the string.

Python

text = 'blue sky'
new_text = text.[1]('blue', 'red')
print(new_text)

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

Areplace

BReplace

Creplac

Dsubstitute

Attempts:

3 left

💡 Hint

Common Mistakes

Using capitalized method names like 'Replace'.

Misspelling the method name.

The correct method name is replace all lowercase. Python is case-sensitive.

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 letters.

Python

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

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.

Using the wrong comparison operator.

Use len(word) to get the length and filter words with length greater than 3 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 4 letters.

Python

words = ['tree', 'house', 'car', 'elephant']
result = { [1]: [2] for w in words if len(w) [3] 4 }
print(result)

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

Aw.upper()

Blen(w)

C>

Dw

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word as key without uppercase.

Using wrong comparison operator or value.

Use w.upper() for uppercase keys, len(w) for values, and filter words longer than 4 with >.