Operators are used to perform operations on values and variables. These are special characters that perform arithmetic and logical calculations. The value the operator operates on is known as operand .
Table of Content
Boolean Operators
In Python, Boolean operators are used in conditional expressions (True or False). They perform logical AND , logical OR and logical NOT .
OPERATOR | DESCRIPTION | SYNTAX |
and | Logical AND: True if both the operands are true | x and y |
or | Logical OR: True if either of the operands is true | x or y |
not | Logical NOT: True if operand is false | not x |
Boolean AND operator
Boolean operator returns True
if both operands are True, otherwise it returns False
.
Example # 1:
# Python program for demonstration # boolean and operator a = 10 b = 10 c = - 10 if a" 0 and b" 0 : print ( "The numbers are greater than 0" ) if a" 0 and b" 0 and c" 0 : print ( "The numbers are greater than 0" ) else : print ( "Atleast one number is not greater than 0 " ) |
Exit :
The numbers are greater than 0 Atleast one number is not greater than 0
Example # 2 :
# Python program for demonstration # boolean and operator a = 10 b = 12 c = 0 if a and b and c: print ( "All the numbers have boolean value as True" ) else : print ( "Atleast one number has boolean value as False" ) |
Output:
Atleast one number has boolean value as False
Note. If the first expression evaluates to false when using the and operator, then subsequent expressions are not evaluated.
Logic or operator
Boolean or operator returns True if any of the operands — True.
Example # 1:
# Python program for demonstration # boolean or operator a = 10 b = - 10 c = 0 if a" 0 or b" 0 : print ( "Either of the number is greater than 0" ) else : print ( "No number is greater than 0 " ) if b" 0 or c" 0 : print ( "Either of the number is greater than 0" ) else : print ( "No number is greater than 0 " ) |
Either of the number is greater than 0 No number is greater than 0 Example # 2 :
# Python program for demonstration # boolean and operator a = 10 b = 12 c = 0 if a or b or c: print ( "Atleast one number has boolean value as True" ) else : print ( "All the numbers have boolean value as False" ) |
Exit:
Atleast one number has boolean value as True
Note. If the first expression evaluates to True during use or operator, then further expressions not evaluated.
Logical non-operator
Logical non-operator operation with a single boolean value. If boolean True
returns False
and vice versa.
Example :
# Python program for demonstration # logical non-operator a = 10 if not a: print ( "Boolean value of a is True" ) if not (a % 3 = = 0 or a % 5 = = 0 ): print ( "10 is not divisible by either 3 or 5" ) else : print ( " 10 is divisible by either 3 or 5 " ) |
Exit:
10 is divisible by either 3 or 5
Boolean operator evaluation order
For multiple operators, Python always evaluates the expression from left to right ... You can check this with the example below.
Example :
# Python program for demonstration # order of logic evaluation # statements def order (x): print ( "Method called for value:" , x) return True if x" 0 else False a = order b = order c = order if a ( - 1 ) or b ( 5 ) or c ( 10 ): print ( "Atleast one of the number is positive" ) |
Exit :
Method called for value: -1 Method called for value: 5 Atleast one of the number is positive
Shop
Best Python online courses for 2022
$FREE
Best laptop for Excel
$
Best laptop for Solidworks
$399+
Best laptop for Roblox
$399+
Best computer for crypto mining
$499+
Best laptop for Sims 4
$
Best laptop for Zoom
$499
Best laptop for Minecraft
$590
Latest questions
PythonStackOverflow
Common xlabel/ylabel for matplotlib subplots
1947 answers
PythonStackOverflow
Check if one list is a subset of another in Python
1173 answers
PythonStackOverflow
How to specify multiple return types using type-hints
1002 answers
PythonStackOverflow
Printing words vertically in Python
909 answers
PythonStackOverflow
Python Extract words from a given string
798 answers
PythonStackOverflow
Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?
606 answers
PythonStackOverflow
Python os.path.join () method
384 answers
PythonStackOverflow
Flake8: Ignore specific warning for entire file
360 answers
Wiki
Python | How to copy data from one Excel sheet to another
Common xlabel/ylabel for matplotlib subplots
Check if one list is a subset of another in Python
How to specify multiple return types using type-hints
Printing words vertically in Python
Python Extract words from a given string
Cyclic redundancy check in Python
Finding mean, median, mode in Python without libraries
Python add suffix / add prefix to strings in a list
Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?
Python - Move item to the end of the list
Python - Print list vertically