Methods with parameters in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method that takes one parameter and prints it.

Python

class Printer:
    def print_message(self, [1]):
        print(message)

p = Printer()
p.print_message("Hello")

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

Amessage

Bmsg

Ctext

Dinput

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name different from the variable inside the method causes a NameError.

The method parameter must match the variable used inside the method. Here, message is used, so the parameter should be message.

2fill in blank

medium

Complete the code to call the method with the correct argument.

Python

class Calculator:
    def add(self, number):
        return number + 10

calc = Calculator()
result = calc.add([1])
print(result)

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

Anumber

B"5"

C5

Dadd

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a string instead of a number causes concatenation or errors.

The method expects a number, so passing the integer 5 is correct. Passing a string "5" would cause unexpected behavior.

3fill in blank

hard

Fix the error in the method definition to correctly accept two parameters.

Python

class Multiplier:
    def multiply(self, [1]):
        return a * b

m = Multiplier()
print(m.multiply(3, 4))

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

Ax, y

Ba, b

Cself, a, b

Dnum1, num2

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting self causes a TypeError when calling the method.

Methods must have self as the first parameter, which is already included. To accept two numbers, fill the blank with a, b to match the variables used inside the method.

4fill in blank

hard

Fill both blanks to create a method that returns the sum of two parameters.

Python

class Adder:
    def add(self, [1], [2]):
        return x + y

adder = Adder()
print(adder.add(7, 8))

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

Ax

By

Ca

Db

Attempts:

3 left

💡 Hint

Common Mistakes

Using parameter names different from the variables in the return statement causes NameError.

The method parameters must match the variables used in the return statement. Here, x and y are used, so the parameters should be x and y.

5fill in blank

hard

Fill all three blanks to create a method that returns a formatted string using its parameters.

Python

class Greeter:
    def greet(self, [1], [2]):
        return f"Hello, [3] [2]!"

g = Greeter()
print(g.greet("Dr.", "Smith"))

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

Atitle

Bname

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up parameter names or placeholders causes NameError or wrong output.

The method parameters are title and name. The formatted string uses title and name. The third blank is the first part inside the string, which is title.