Type checking using type() in Python - Mini Project: Build & Apply

Type Checking Using type()

📖 Scenario: You are working on a program that needs to handle different types of data carefully. Sometimes, you need to check what type of data you have before doing something with it.

🎯 Goal: Build a simple Python program that creates different variables, checks their types using the type() function, and prints the results.

📋 What You'll Learn

Create variables of different types: integer, string, and list

Create a variable called data_type to store the type of a variable

Use type() to find the type of each variable

Print the type of each variable

💡 Why This Matters

🌍 Real World

Type checking helps programs handle data correctly, avoiding errors when working with different kinds of information.

💼 Career

Many programming jobs require understanding data types to write safe and bug-free code.

1

Create variables of different types

Create three variables: number with the value 10, text with the value 'hello', and items with the value [1, 2, 3].

Python

# Create variables number, text, and items with the given values
# Your code here

Need a hint?

Use simple assignment to create each variable with the exact values.

2

Create a variable to hold the type

Create a variable called data_type and set it to None as a placeholder.

Python

number = 10
text = 'hello'
items = [1, 2, 3]

# Create a variable data_type and set it to None
# Your code here

Need a hint?

This variable will store the type information later.

3

Use type() to find the type of each variable

Use the type() function to find the type of number, text, and items. Assign the type of number to data_type. Then create variables text_type and items_type to store the types of text and items respectively.

Python

number = 10
text = 'hello'
items = [1, 2, 3]
data_type = None

# Assign the type of number to data_type
# Create text_type and items_type to store types of text and items
# Your code here

Need a hint?

Use type(variable) to get the type of each variable.

4

Print the types of the variables

Print the values of data_type, text_type, and items_type each on a separate line.

Python

number = 10
text = 'hello'
items = [1, 2, 3]
data_type = None
data_type = type(number)
text_type = type(text)
items_type = type(items)

# Print data_type, text_type, and items_type
# Your code here

Need a hint?

Use three print() statements to show the types.