How variable type changes at runtime in Python - Try It Yourself

How variable type changes at runtime

📖 Scenario: Imagine you are working with a variable that can hold different types of information during a program. For example, a box that can hold a number first, then a word, and then a list. This shows how Python allows the type of a variable to change as the program runs.

🎯 Goal: You will create a variable and change its type step-by-step, then print its value and type each time to see how it changes.

📋 What You'll Learn

Create a variable called data and assign it the integer value 10

Change the variable data to hold the string value 'hello'

Change the variable data to hold the list [1, 2, 3]

Print the value and type of data after each change

💡 Why This Matters

🌍 Real World

In real programs, variables often change what they hold depending on the situation, like storing a number first and then a message.

💼 Career

Understanding how variables can change types helps in debugging and writing flexible code in many programming jobs.

1

Create a variable with an integer value

Create a variable called data and assign it the integer value 10.

Python

# Create a variable called data and assign it the integer 10
# Your code here

Need a hint?

Use the equals sign = to assign the value 10 to the variable data.

2

Change the variable to a string

Change the variable data to hold the string value 'hello'.

Python

data = 10
# Change data to the string 'hello'
# Your code here

Need a hint?

Assign the string 'hello' to the variable data using =.

3

Change the variable to a list

Change the variable data to hold the list [1, 2, 3].

Python

data = 10
data = 'hello'
# Change data to the list [1, 2, 3]
# Your code here

Need a hint?

Assign the list [1, 2, 3] to the variable data using =.

4

Print the value and type of the variable after each change

Print the value and type of the variable data after each change using print(data, type(data)).

Python

data = 10
print(data, type(data))
data = 'hello'
print(data, type(data))
data = [1, 2, 3]
print(data, type(data))
# Your code here

Need a hint?

Use print(data, type(data)) after each assignment to show the value and its type.