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Expression: An expression is a combination of operators and operands.
In an expression x = y + 9,

x, y, and 9 are operands, while = and + are operators.
Types of Operators: Python allows eight types of operators. In this chapter, we will

discuss two types of operators.

2.5.1 Arithmetic Operator
Arithmetic operator is used to apply basic mathematical operations like addition, subtraction,

multiplication, division, etc. These operators require two operands to operate. Following are
some of the binary operators.

Name of Operator Symbol used Purpose Example

Addition + Summation of Numbers X=5+6 will yield 11

Subtraction - Subtraction of Numbers X=9-5 will yield 4

Multiplication * Product of Numbers X=3*4 will yield 12
Division / Division of Numbers X=9/3 will yield 3.0

Modulus % Returns the remainder X=5%2 will yield 1

Floor Division // Divides and removes the X=7//2 will yield 3
fractional part from result
Exponentiation ** Returns base raised to the X=3**3 will yield

power of the exponent 27

2.5.2 Relational Operator

Relational operators are used to describe relationships between values or operands. In
Python, you will use six relational operators for comparing values. These operators are also
known as comparison operators.

The six relational operators are:

Operator Example (if a = 9, b = 5) Result

> Greater than a>b True
< Less than a<b False

>= Greater than or equal to a>=b True

<= Less than or equal to a<=b False
== Equal to a==b False

!= Not equal to a!=b True

You can conclude that the resultant of the comparison operator will be either True or False.

Python 27