Relational or Comparison Operators | Operators in Python | Digital Community

Types of Operators in Python

 

 

Python provides us 7 popular types of operators:

 

 

·      Arithmetic Operators

 

·      Relational or Comparison Operators

 

·      Logical Operators

 

·      Assignment Operator

·      Compound Operators

 

·      Identity Operators

 

·      Membership Operators

 

 

Today we, discuss Relational or Comparison Operators:

In this post, we are going to discuss Relational or Comparison Operators in Python but before these, if You are not seen our video on this topic please see it first, then you will understand the concepts very well.

•      Relational Operators

 

•      Relational Operators with Strings

 

•      Chaining of Relational Operators

 

•      Special Behavior Of == and !=

 

—  Relational operators are used to compare values.

 

—  They either return True or False according to the condition.

 

—  These operators are:

 

Operator	Meaning
>	Greater Than
<	Less Than
>=	Greater Than Equal To
<=	Less Than Equal To
==	Equal To
!=	Not Equal To

 

 

The Example of Basic Relational Operators :

 

 

a=10

b=4

 

print("a=",a,"b=",b)

 

print("a > b",a>b)

 

print("a < b",a<b)

 

print("a==b",a==b)

 

print("a!=b",a!=b)

 

print("a>=b",a>=b)

 

print("a<=b",a<=b)

 

The Output :

 

Relational Operators With Strings

 

—  Relational Operators can also work with strings .

 

—  When applied on string operands , they compare the Unicode of corresponding characters and return True or False based on that comparison.

 

—  As discussed, previously , this type of comparison is called lexicographical comparsion.

 

Example of Relational Operators With Strings :

 

a="Ramesh"

b="Rajesh"

print("a=",a,"b=",b)

print("a > b",a>b)

print("a < b",a<b)

print("a==b",a==b)

print("a!=b",a!=b)

print("a>=b",a>=b)

print("a<=b",a<=b)

 

 

The Output :

 

 

 

 

—  If  we want to check the UNICODE value for a particular letter , then we can call the function ord().

 

—  It is a built in function which accepts only one character as argument and it returns the UNICODE number of the argument passed

 

Example:

 

ord(‘A’)

65

ord(‘m’)

109

ord(‘j’)

106

 

Example :

 

a= "India"
b= "india"
print("a=",a,"b=",b)
print("a > b",a>b)
print("a < b",a<b)
print("a==b",a==b)
print("a!=b",a!=b)
print("a>=b",a>=b)
print("a<=b",a<=b)

The Output :

Special Behavior of Relational Operators:

 

— Python allows us to chain multiple relational operators in one single statement.

 

— For example, the expression 1<2<3  is perfectly valid in Python

 

— However, when Python evaluates the expression , it returns True if all individual conditions are true , otherwise it returns False

 

 

Example:

    print(7>6>5)

 

Output:

    True

 

Example:

   print(5<6>7)

 

Output:

   False

 

 

Special Behavior Of == And !=

 

— == compares  it’s operands for equality and if they are of compatible types and have same value then it returns True otherwise it returns False

 

— Similarly != compares  it’s operands for inequality and if they are of incompatible types or have different value then it returns True otherwise it returns False

 

Example:

                           print(10==10)

 

Output:

                           True

 

Example:

                          print(15==15.01)

 

Output:

                          False

 

Example:

                           print(0 != False)

 

Output:

                          False

And if you have any doubt regarding this topic then , you can ask your doubt in the comment section , I will respond you as soon as possible .

 

 

 

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