Python Variables

Variables in Python are used to store data values. Unlike many other programming languages, Python does not require you to declare the type of a variable. The type is automatically determined when you assign a value.

Creating Variables

In Python, a variable is created the moment you assign a value to it using the equals (=) sign.

Example

x = 5
y = "John"

print(x)
print(y)

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Variable Types

Python variables can store different types of data such as numbers and text.

Example

x = 10        # integer
y = 3.14      # float
name = "Ali"  # string

print(x)
print(y)
print(name)

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Assigning Multiple Variables

You can assign values to multiple variables in one line.

Example

x, y, z = 1, 2, 3

print(x)
print(y)
print(z)

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Assigning Same Value

You can assign the same value to multiple variables in one line.

Example

a = b = c = 10

print(a)
print(b)
print(c)

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Variable Naming Rules

Variable names must start with a letter or underscore (_)
They cannot start with a number
Variable names are case-sensitive
Avoid using Python keywords as variable names

Best Practices

Use meaningful variable names
Use lowercase letters with underscores (snake_case)
Keep variable names short but descriptive

Using Variables in Output

You can combine variables to display complete information.

Example

name = "Ali"
age = 25

print("Name:", name)
print("Age:", age)

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