Constructor parameters in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a constructor that takes one parameter 'name'.

Python

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

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

Aname

Bself

Cage

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'self' as a parameter name other than the first one.

Forgetting to include the parameter in the constructor.

The constructor method __init__ takes 'name' as a parameter to initialize the object.

2fill in blank

medium

Complete the code to assign the parameter 'age' to the instance variable.

Python

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

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

Aage

Bself.age

CPerson.age

Dself

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning self.age to itself instead of the parameter.

Using the class name instead of the parameter.

We assign the parameter 'age' to the instance variable self.age to store it in the object.

3fill in blank

hard

Fix the error in the constructor parameter to correctly accept two parameters: 'name' and 'age'.

Python

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

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

Aname age

Bname; age

Cname, age

Dself, name, age

Attempts:

3 left

💡 Hint

Common Mistakes

Separating parameters with spaces or semicolons instead of commas.

Including 'self' again in the parameter list.

Parameters must be separated by commas. The constructor always has 'self' as the first parameter, which is already there.

4fill in blank

hard

Fill both blanks to create a constructor that assigns 'name' and 'age' parameters to instance variables.

Python

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

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

Aname

Bage

Cself.name

Dself.age

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning instance variables to themselves instead of parameters.

Mixing up the parameter names.

The constructor assigns the parameters 'name' and 'age' to the instance variables self.name and self.age.

5fill in blank

hard

Fill all three blanks to create a constructor that assigns 'name', 'age', and 'city' parameters to instance variables.

Python

class Person:
    def __init__(self, name, age, city):
        self.name = [1]
        self.age = [2]
        self.city = [3]

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

Aname

Bage

Ccity

Dself

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'self' instead of parameter names on the right side.

Mixing up parameter names and instance variables.

The constructor assigns each parameter to its matching instance variable using self..