Python operator precedence


Python operator precedence describes the order in which operations are performed when a computer evaluates an expression. Operations with higher priority are performed first, and then operations with lower priority are performed. For example, we often say that multiplication and division are performed first, and then addition and subtraction operations are performed.

Priority Operator Description
1 lambda Lambda expression
2 or Boolean or Boolean NOT
5 in, not in Membership test
6 is, is not Identity test
7 <, <=, >, >=, !=, == Comparison
8 | Bitwise OR
9 ^ Bitwise XOR
10 & Bitwise AND
11 <<,>> Shift
12 +,- Addition and subtraction
13 *,/,% Multiplication, division and remainder
14 +x,-x Sign
15 ~x Bitwise flip
16 ** Exponent
17 x.attribute Attribute reference
18 x[index] Subscript
19 x[index:index] Addressing segment
20 f(arguments...) Function call
21 (experession,...) Binding or tuple display
22 [expression,...] List display
23 {key:datum,...} Dictionary display
24 'expression,...' String conversion