The following table lists all operators from highest precedence to 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'td> |
| 7 | ^ | Bitwise exclusive `OR' and regular `OR' |
| 8 | <= < > >= Comparison operatorsp> |
| 9 | <> == != Equality operators |
| 10 | = %= /= //= -= += *= **= Assignment operators |
| 11 | is is not is is not |
| 12 | in not in Membership operators |
| 13 | not or and Logical operators |
Operator precedence affects how an expression is evaluated.
For example, x = 7 + 3 * 2; here, x is assigned 13, not 20 because operator * has higher precedence than +, so it first multiplies 3*2 and then adds into 7.
Here, operators with the highest precedence appear at the top of the table, those with the lowest appear at the bottom.
Example
#!/usr/bin/python a = 20 b = 10 c = 15 d = 5 e = 0 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 −
Value of (a + b) * c / d is 90 Value of ((a + b) * c) / d is 90 Value of (a + b) * (c / d) is 90 Value of a + (b * c) / d is 50