Module 4 of 15 · Step 1 of 10

Data Types

A type tells Python what kind of value it has. A whole number, decimal, piece of text, and true-or-false choice behave differently.

By the end of this lesson, you can:

Recognize int, float, str, and bool
Inspect a value with type()
Convert simple numeric text
Choose a suitable type

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Learn · Four everyday value types

Concept 1 of 4

Four everyday value types

int is a whole number, float is a decimal, str is text in quotes, and bool is True or False. Python remembers the type of each value, even when two values look similar on screen.

Pattern

count = 3
price = 2.5
name = "Ada"
ready = True

Code

course = "Python"
lessons = 15
is_active = True
print(course)

Output

Python

Why it works

course stores text (str).
lessons stores a whole number (int).
is_active stores a Boolean (bool), written with a capital T.

Common mistake

Not this

ready = true

Try this

ready = True

Python's Boolean words begin with capital letters.