Variables and Operators

Variables are containers for storing data values. In Python, a variable is created the moment you first assign a value to it.

Variables

Python has no command for declaring a variable. A variable is created the moment you first assign a value to it.

x = 5
y = "Zavont"
print(x)
print(y)

Naming Rules

• A variable name must start with a letter or the underscore character.
• A variable name cannot start with a number.
• Variable names are case-sensitive (age, Age, and AGE are different variables).

Operators

Python divides the operators into the following groups:

Arithmetic Operators

Used with numeric values to perform common mathematical operations:

Operator	Name	Example
+	Addition	x + y
-	Subtraction	x - y
*	Multiplication	x * y
/	Division	x / y
%	Modulus	x % y
**	Exponentiation	x ** y

Assignment Operators

Used to assign values to variables:

x = 5    # Assign 5 to x
x += 3   # Same as x = x + 3

Comparison Operators

Used to compare two values:

x == y   # Equal
x != y   # Not equal
x > y    # Greater than