Python Logical Operators Example
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Following table shows all the logical operators supported by Python language. Assume variable a holds 10 and variable b holds 20 then:
| Operator | Description | Example |
|---|---|---|
| and | Called Logical AND operator. If both the operands are true then then condition becomes true. | (a and b) is true. |
| or | Called Logical OR Operator. If any of the two operands are non zero then then condition becomes true. | (a or b) is true. |
| not | Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. | not(a and b) is false. |
Example:
Try following example to understand all the logical operators available in Python programming language:
#!/usr/bin/python a = 10 b = 20 c = 0 if ( a and b ): print "Line 1 - a and b are true" else: print "Line 1 - Either a is not true or b is not true" if ( a or b ): print "Line 2 - Either a is true or b is true or both are true" else: print "Line 2 - Neither a is true nor b is true" a = 0 if ( a and b ): print "Line 3 - a and b are true" else: print "Line 3 - Either a is not true or b is not true" if ( a or b ): print "Line 4 - Either a is true or b is true or both are true" else: print "Line 4 - Neither a is true nor b is true" if not( a and b ): print "Line 5 - a and b are true" else: print "Line 5 - Either a is not true or b is not true"
When you execute the above program it produces following result:
Line 1 - a and b are true Line 2 - Either a is true or b is true or both are true Line 3 - Either a is not true or b is not true Line 4 - Either a is true or b is true or both are true Line 5 - a and b are true