Instance methods in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an instance method that returns the name of the person.

Python

class Person:
    def __init__(self, name):
        self.name = name
    def get_name(self):
        return self.[1]

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

Aget_name

BName

Cname

Dself.name

Attempts:

3 left

💡 Hint

Common Mistakes

Writing 'Name' with uppercase N causes attribute error.

Using 'get_name' instead of the attribute name returns the method itself, not the value.

The instance method accesses the instance variable name using self.name. Here, the blank is for the attribute name, so just name is correct.

2fill in blank

medium

Complete the code to call the instance method greet on the object p.

Python

class Person:
    def greet(self):
        return "Hello!"

p = Person()
message = p.[1]()

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

Agreet

BGreet

Cgreet()

Dgreeting

Attempts:

3 left

💡 Hint

Common Mistakes

Including parentheses inside the blank causes syntax error.

Using uppercase 'Greet' causes attribute error.

To call an instance method, use the method name without parentheses inside the attribute access, then add parentheses after. So p.greet() is correct, and the blank is just the method name greet.

3fill in blank

hard

Fix the error in the instance method by completing the blank with the correct parameter name.

Python

class Person:
    def __init__([1], name):
        self.name = name

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

Aperson

Bthis

Ccls

Dself

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'cls' which is for class methods.

Using 'this' which is not a Python keyword.

The first parameter of instance methods must be self to refer to the instance.

4fill in blank

hard

Fill both blanks to create an instance method that returns the person's age plus 5.

Python

class Person:
    def __init__(self, age):
        self.age = age
    def future_age(self):
        return self.[1] [2] 5

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

Aage

B+

C-

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using minus or multiplication operators changes the meaning.

Using wrong attribute names causes errors.

The method returns the current age plus 5, so the attribute age and the plus operator + are needed.

5fill in blank

hard

Fill all three blanks to create a method that returns a greeting with the person's name in uppercase.

Python

class Person:
    def __init__(self, name):
        self.name = name
    def greet(self):
        return f"Hello, [1]!".[2]().[3]()

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

Aself.name

Bupper

Cstrip

Dlower

Attempts:

3 left

💡 Hint

Common Mistakes

Using lower() instead of upper().

Calling methods in wrong order causes unexpected output.

The method returns a greeting with the name in uppercase and stripped of whitespace. So self.name is the name, strip() removes spaces, and upper() converts to uppercase.