1, the operator:
1.1, the operator types:
| Operators | name | Explanation | example |
| + | plus | 5+4 | |
| - | Less | ||
| * | Multiply | ||
| / | except | ||
| // | Take divisible | The integer part of the quotient | 3 // 2, the result is a |
| % | Remainder | remainder | |
| >> | Right | Binary right | |
| << | The left | Binary left | |
| & | versus | Binary Bitwise AND | |
| | | or | Binary Bitwise or | |
| ^ | XOR | Binary Bitwise XOR | |
| ~ | Overturn | Bitwise inversion of x is - (x + 1) | -6 ~ 5 Results |
| < | Less than | ||
| > | more than the | ||
| <= | Less than or equal | ||
| >= | greater or equal to | ||
| == | equal | ||
| != | not equal to | ||
| not | Boolean "NOT" | logic operation | |
| and | Boolean "and" | logic operation | |
| or | Boolean "or" | logic operation | |
| ** | power |
1.2, operator precedence:
| Operators | description |
| lambda | |
| or | |
| and | |
| not | |
| in, not in | |
| is,is not | |
| <,>,<=,>=,<>,!=,== | |
| | | |
| ^ | |
| & | |
| <<,>> | |
| +,- | |
| *,/,% | |
| +x,-x | |
| ~x | |
| ** | |
| x.attribute | Property Reference |
| x[index | Subscript |
| x[index:index | Addressing section |
| f(arguments...) | Function call |
| (experession,...) | Binding or tuple display |
| [expression,...] | List shows |
| {key:datum...} | Dictionary display |
| 'expression,.' | String conversion |
First calculates high priority operation, and then will calculate a low priority operation, the same priority operation left to right, parentheses can contain change the priority
2, the expression:
By the operators, variables, characters and the like consisting of formula