Comparison Operators: Python Complete Course — Part 13

Before we start let me tell you that:

• This article is a part of Python Complete Beginner to Expert Course which you can find it here.
• All resources are available in the “Resources” section below.
• This article is also available as a YouTube video here.

Introduction

Assume that you are building an application which is designed for an age group from 20 to 40. To achieve that, you should ask the user to enter his age in the application registration form, and in your back-end code you should compare between the user’s age and your app age ranges. In order to do that you need comparison operators and to learn more about them keep reading.

This article will cover the following outlines:

1. Comparison Operators
2. Equal (==)
3. Not Equal (!=)
4. Greater Than (>)
5. Greater Than or Equal to (>=)
6. Less Than (<)
7. Less Than or Equal to (<=)

1. Comparison Operators

From the name you can understand that they are used mainly to compare between two values, and like the previous operators, you have to know the number of operands that these operators take, operands data type, and the result data type. In case of comparison operators, each operator:

• Takes two operands
• Operands data type is number
• The result is a number (Boolean)

Now let us see some comparison operators examples…

2. Equal (==)

Input:

a = 10
b = 20

c = a==b
print(c)

Output:

False

As you saw in the previous example because the value of variable “a” does not equal the value of “b”, the result is “False”.

Note: when you want to assign a value to a variable you use “=”, but when you want to compare between two variables you use “==”.

3. Not Equal (!=)

Input:

c = a != b
print(c)

Output:

True

Here because the variables are not equal to each other, you got True.

4. Greater Than (>)

Input:

c = a > b
print(c)

Output:

False

Here you got False because the value of “a” is greater than the value of “b”.

5. Greater Than or Equal to (>=)

Input:

c = a >= b
print(c)

Output:

False

Here you got False also because “a” is not equal and not greater than “b”.

6. Less Than (<)

Input:

c = a < b
print(c)

Output:

True

Here you got True because “a” is less than “b”.

7. Less Than or Equal to (<=)

Input:

#define a new variables 
a = 10
b = 10

c = a <= b
print(c)

Output:

True

Here you got True because “a” is equal “b”.

Now, let us summarize what we have learned in this article:

• Comparison operators: Are used to compare between two values.
• Comparison operators take exactly two operands and these operands should be numbers.
• The final result of the comparison operations is a number (Boolean).

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To get back to the previous article, you can use the following link:

Part 12:Arithmetic Operators in Python

To move on to the next article, you can use the following link:

Part 14:Logical Operators

Resources:

• GitHub here.