Variables and Data Types in Python

1. Variables

• Variables are used to store and manage data in a program.
• They are like containers that hold values or references to values.
• In Python, you don't need to declare the data type explicitly; it is dynamically inferred.

Example:

# Variable assignment
age = 25
name = "John"
height = 5.9

# Multiple assignment
x, y, z = 10, 20, 30

2. Data Types

Python has several built-in data types:

a. Numeric Types

• int: Integer type (e.g., 5, -10)
• float: Floating-point type (e.g., 3.14, -0.5)

b. Text Type

• str: String type (e.g., "Hello, World!")

c. Boolean Type

• bool: Boolean type (True or False)

d. Sequence Types

• list: Ordered, mutable collection (e.g., [1, 2, 3])
• tuple: Ordered, immutable collection (e.g., (1, 2, 3))

e. Set Types