String validation checks in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the string contains only digits.

Python

text = "12345"
result = text.[1]()
print(result)

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

Aisalpha

Bislower

Cisspace

Disdigit

Attempts:

3 left

💡 Hint

Common Mistakes

Using isalpha() which checks for letters, not digits.

Using isspace() which checks for spaces.

The isdigit() method returns True if all characters in the string are digits.

2fill in blank

medium

Complete the code to check if the string contains only alphabetic characters.

Python

word = "Hello"
if word.[1]():
    print("All letters")
else:
    print("Contains other characters")

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

Aisdigit

Bisalnum

Cisalpha

Disspace

Attempts:

3 left

💡 Hint

Common Mistakes

Using isdigit() which checks for digits.

Using isalnum() which allows letters and digits.

The isalpha() method returns True if all characters in the string are letters.

3fill in blank

hard

Fix the error in the code to check if the string contains only whitespace characters.

Python

space_str = "   \t\n"
print(space_str.[1]())

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

Aisspace

Bisalpha

Cisdigit

Disalnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using isalpha() which checks for letters.

Using isdigit() which checks for digits.

The isspace() method returns True if all characters in the string are whitespace characters like spaces, tabs, or newlines.

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", "cat", "banana", "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 '<' instead of '>' causing wrong filtering.

Using 'word' instead of 'len(word)' for values.

The dictionary comprehension uses len(word) to get the length and filters 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 with length greater than 4.

Python

words = ["tree", "flower", "grass", "bush"]
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 'w' instead of 'w.upper()' for keys.

Using '<' instead of '>' for filtering.

The dictionary comprehension uses w.upper() as keys, len(w) as values, and filters words with length greater than 4 using >.