Python 3 - Operators Precedence Example

---

The following table lists all operators from highest precedence to the lowest.

Sr.No.	Operator & Description
1	** Exponentiation (raise to the power)
2	~ + - complement, unary plus and minus (method names for the last two are +@ and -@)
3	* / % // Multiply, divide, modulo and floor division
4	+ - Addition and subtraction
5	>> << Right and left bitwise shift
6	& Bitwise 'AND'
7	^ | Bitwise exclusive `OR' and regular `OR'
8	<= < > >= Comparison operators
9	<> == != Equality operators
10	= %= /= //= -= += *= **= Assignment operators
11	is is not Identity operators
12	in not in Membership operators
13	not or and Logical operators

Operator precedence affects the evaluation of an expression.

For example, x = 7 + 3 * 2; here, x is assigned 13, not 20 because the operator * has higher precedence than +, so it first multiplies 3*2 and then is added to 7.

Here, the operators with the highest precedence appear at the top of the table, those with the lowest appear at the bottom.

Example

#!/usr/bin/python3

a = 20
b = 10
c = 15
d = 5

print ("a:%d b:%d c:%d d:%d" % (a,b,c,d ))
e = (a + b) * c / d       #( 30 * 15 ) / 5
print ("Value of (a + b) * c / d is ",  e)

e = ((a + b) * c) / d     # (30 * 15 ) / 5
print ("Value of ((a + b) * c) / d is ",  e)

e = (a + b) * (c / d)    # (30) * (15/5)
print ("Value of (a + b) * (c / d) is ",  e)

e = a + (b * c) / d      #  20 + (150/5)
print ("Value of a + (b * c) / d is ",  e)

Output

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

a:20 b:10 c:15 d:5
Value of (a + b) * c / d is  90.0
Value of ((a + b) * c) / d is  90.0
Value of (a + b) * (c / d) is  90.0
Value of a + (b * c) / d is  50.0