Variables

A variable is a name that stores a value, so you can use it later.

name = "Riya"
age = 21
print(name)
print(age)

The = sign means "store the value on the right in the name on the left". It is not "equals" like in maths.

You can change a variable any time:

score = 10
score = score + 5
print(score)   # 15

Naming rules

• Use letters, numbers and _. No spaces: first_name, not first name.
• A name cannot start with a number: 2nd is wrong, second is fine.
• Names are case-sensitive: age and Age are different variables.