Python Comparison Operators
Summary: in this tutorial, you’ll learn about Python comparison operators and how to use them to compare two values.
Introduction to Python comparison operators
In programming, you often want to compare a value with another value. To do that, you use comparison operators.
Python has six comparison operators, which are as follows:
- Less than (
<) - Less than or equal to (
<=) - Greater than (
>) - Greater than or equal to (
>=) - Equal to (
==) - Not equal to (
!=)
These comparison operators compare two values and return a boolean value, either True or False.
And you can use these comparison operators to compare both numbers and strings.
Less than operator (<)
The Less Than operator (<) compares two values and returns True if the value on the left is less than the value on the right. Otherwise, it returns False:
left_value < right_valueCode language: Python (python)
The following example uses the Less Than (<) operator to compare two numbers:
10 < 20
True
30 < 20
FalseCode language: Python (python)
It’s quite obvious when you use the less than operator with the numbers.
The following example uses the less than operator (<) to compare two strings:
'apple' < 'orange'
True
'banana' < 'apple'
FalseCode language: Python (python)
The expression 'apple' < 'orange' returns True because the letter a in apple is before the letter o in orange.
Similarly, the 'banana' < 'apple' returns False because the letter 'b' is after the letter 'a'.
The following example shows how to use the less than operator with variables:
x = 10
y = 20
x < y
True
y < x
FalseCode language: Python (python)
Less than or equal to operator (<=)
The less than or equal to operator compares two values and returns True if the left value is less than or equal to the right value. Otherwise, it returns False:
left_value <= right_valueCode language: Python (python)
The following example shows how to use the less than or equal to operator to compare two numbers:
20 <= 20
True
10 <= 20
True
30 <= 30
TrueCode language: Python (python)
And this example shows how to use the less than or equal to operator to compare the values of two variables:
x = 10
y = 20
x <= y
True
y <= x
FalseCode language: Python (python)
Greater than operator (>)
The greater than operator (>) compares two values and returns True if the left value is greater than the right value. Otherwise, it returns False:
left_value > right_valueCode language: Python (python)
This example uses the greater than operator (>) to compare two numbers:
20 > 10
True
20 > 20
False
10 > 20
FalseCode language: Python (python)
And the following example uses the greater than operator (>) to compare two strings:
'apple' > 'orange'
False
'orange' > 'apple'
TrueCode language: Python (python)
Greater Than or Equal To operator (>=)
The greater than or equal to operator (>=) compares two values and returns True if the left value is greater than or equal to the right value. Otherwise, it returns False:
left_value >= right_valueCode language: Python (python)
The following example uses the greater than or equal to operator to compare two numbers:
20 >= 10
True
20 >= 20
True
10 >= 20
FalseCode language: Python (python)
And the following example uses the greater than or equal to operator to compare two strings:
'apple' >= 'apple'
True
'apple' >= 'orange'
False
'orange' >= 'apple'
TrueCode language: Python (python)
Equal To operator (==)
The equal to operator (==) compares two values and returns True if the left value is equal to the right value. Otherwise, it returns False :
left_value = right_valueCode language: Python (python)
The following example uses the equal to operator (==) to compares two numbers:
20 == 10
False
20 == 20
TrueCode language: Python (python)
And the following example uses the equal to operator (==) to compare two strings:
'apple' == 'apple'
True
'apple' == 'orange'
FalseCode language: Python (python)
Not Equal To operator (!=)
The not equal to operator (!=) compares two values and returns True if the left value isn’t equal to the right value. Otherwise, it returns False.
left_value != right_valueCode language: Python (python)
For example, the following uses the not equal to operator to compare two numbers:
20 != 20
False
20 != 10
TrueCode language: Python (python)
And the following example uses the not equal to operator to compare two strings:
'apple' != 'apple'
False
'apple' != 'orange'
TrueCode language: Python (python)
Summary
- A comparison operator compares two values and returns a boolean value, either
TrueorFalse. - Python has six comparison operators: less than (
<), less than or equal to (<=), greater than (>), greater than or equal to (>=), equal to (==), and not equal to (!=).