Python Comparison Operators Example


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These operators compare the values on either sides of them and decide the relation among them. They are also called Relational operators.

Assume variable a holds 10 and variable b holds 20, then −

OperatorDescriptionExample
== If the values of two operands are equal, then the condition becomes true. (a == b) is not true.
!= If values of two operands are not equal, then condition becomes true.
<> If values of two operands are not equal, then condition becomes true. (a <> b) is true. This is similar to != operator.
> If the value of left operand is greater than the value of right operand, then condition becomes true. (a > b) is not true.
< If the value of left operand is less than the value of right operand, then condition becomes true. (a < b) is true.
>= If the value of left operand is greater than or equal to the value of right operand, then condition becomes true. (a >= b) is not true.
<= If the value of left operand is less than or equal to the value of right operand, then condition becomes true. (a <= b) is true.

Example

Assume variable a holds 10 and variable b holds 20, then −

#!/usr/bin/python

a = 21
b = 10
c = 0

if ( a == b ):
   print "Line 1 - a is equal to b"
else:
   print "Line 1 - a is not equal to b"

if ( a != b ):
   print "Line 2 - a is not equal to b"
else:
   print "Line 2 - a is equal to b"

if ( a <> b ):
   print "Line 3 - a is not equal to b"
else:
   print "Line 3 - a is equal to b"

if ( a < b ):
   print "Line 4 - a is less than b" 
else:
   print "Line 4 - a is not less than b"

if ( a > b ):
   print "Line 5 - a is greater than b"
else:
   print "Line 5 - a is not greater than b"

a = 5;
b = 20;
if ( a <= b ):
   print "Line 6 - a is either less than or equal to  b"
else:
   print "Line 6 - a is neither less than nor equal to  b"

if ( b >= a ):
   print "Line 7 - b is either greater than  or equal to b"
else:
   print "Line 7 - b is neither greater than  nor equal to b"

When you execute the above program it produces the following result −

Line 1 - a is not equal to b
Line 2 - a is not equal to b
Line 3 - a is not equal to b
Line 4 - a is not less than b
Line 5 - a is greater than b
Line 6 - a is either less than or equal to b
Line 7 - b is either greater than or equal to b

python_basic_operators.htm

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