Use cases for each method type in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a static method inside a class.

Python

class Calculator:
    @staticmethod
    def add(a, b):
        return a [1] b

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

A+

B-

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction or multiplication instead of addition.

The add method should return the sum of a and b, so the operator is +.

2fill in blank

medium

Complete the code to define a class method that returns the class name.

Python

class Person:
    @classmethod
    def get_class_name(cls):
        return cls.[1]

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

A__qualname__

Bname

C__class__

D__name__

Attempts:

3 left

💡 Hint

Common Mistakes

Using instance attributes or incorrect class attributes.

The __qualname__ attribute of a class gives its qualified name, which is useful in class methods.

3fill in blank

hard

Fix the error in the instance method that returns the full name.

Python

class User:
    def __init__(self, first, last):
        self.first = first
        self.last = last
    def full_name([1]):
        return f"{self.first} {self.last}"

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

Auser

Bcls

Cthis

Dself

Attempts:

3 left

💡 Hint

Common Mistakes

Using cls or other names instead of self.

Instance methods must have self as the first parameter to access instance attributes.

4fill in blank

hard

Fill both blanks to create a class method that creates an instance from a string.

Python

class Book:
    def __init__(self, title, author):
        self.title = title
        self.author = author
    @classmethod
    def from_string(cls, book_str):
        title, author = book_str.split([1])
        return cls([2], author)

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

A", "

Btitle

Cauthor

D': '

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong split delimiter or passing wrong variable to constructor.

The string is split by a comma and space ", ". The first part is assigned to title which is passed to the constructor.

5fill in blank

hard

Fill all three blanks to create a static method that checks if a number is even.

Python

class NumberUtils:
    @staticmethod
    def is_even([1]):
        return [2] % [3] == 0

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

Anum

C2

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter name or wrong divisor.

The static method takes a number num and returns True if it is divisible by 2 (even).