Python Data Types

Data types define the type of data stored inside a variable. Python automatically identifies the datatype based on the assigned value.

Why Data Types are Important?

Data types help Python understand:

What kind of data is stored
What operations can be performed
How much memory is required
How the data should behave

Main Python Data Types

x = 10          # Integer

price = 99.99  # Float

name = "Rahul"  # String

is_active = True  # Boolean

Integer (int)

Integer data type stores whole numbers without decimal values.

age = 25

marks = 100

temperature = -5

print(age)
print(marks)
print(temperature)

Float (float)

Float data type stores decimal numbers.

price = 99.99

height = 5.8

percentage = 87.5

print(price)
print(height)
print(percentage)

String (str)

String data type stores text values. Strings are written inside single or double quotes.

name = "Python"

city = 'Delhi'

message = "Welcome to CodeVyro"

print(name)
print(city)
print(message)

Boolean (bool)

Boolean datatype stores only two values: True or False.

is_logged_in = True

is_admin = False

print(is_logged_in)
print(is_admin)

List Data Type

Lists store multiple values in a single variable. Lists are mutable, meaning values can be changed.

numbers = [10, 20, 30, 40]

names = ["Ali", "John", "Sara"]

print(numbers)
print(names)

Tuple Data Type

Tuples are similar to lists, but values cannot be changed after creation.

colors = ("Red", "Blue", "Green")

print(colors)

Dictionary Data Type

Dictionary stores data in key-value pairs.

student = {

    "name": "Ali",

    "age": 20,

    "marks": 90
}

print(student)

Checking Data Type using type()

Use type() function to check the datatype of a variable.

name = "Python"

age = 25

price = 99.99

print(type(name))

print(type(age))

print(type(price))

Output

<class 'str'>

<class 'int'>

<class 'float'>

Type Conversion

Python allows converting one datatype into another datatype.

age = "25"

converted_age = int(age)

print(converted_age)

print(type(converted_age))

Output

25

<class 'int'>

Real Life Example

student_name = "Ali"

student_age = 20

student_percentage = 88.5

passed = True

print(student_name)
print(student_age)
print(student_percentage)
print(passed)

Summary

Data types define the type of stored data.
Python automatically identifies datatypes.
Common datatypes are int, float, str, and bool.
Lists store multiple values.
Dictionaries store key-value pairs.
type() function checks datatype.
Type conversion changes one datatype into another.