kinds of Arithmetic Operation in Python
| Symbol | explaination | return |
|---|
| + | Addition | depend on input type |
| - | Subtraction | depend on input type |
| * | Multiplication | depend on input type |
| / | Division | real number |
| // | Division | Integer |
| % | Remaineder | real number |
| ** | power of | depend on input type |
| and | and logic gare | T or F |
| or | or logic gate | T or F |
| < | less than | T or F |
| > | greater than | T or F |
| <= | less than or equal | T or F |
| >= | greater than or equal | T or F |
| == | equal | T or F |
Result
+, -, *, /, //, %, **, <, >, <=, >= table
| A | B | result |
|---|
| int | int | int A+B result |
| int | float | float A+B result |
| int | bool-T | int A+1 result |
| int | bool-F | int A+0 result |
| int | none | TypeError |
| int | String | TypeError |
| float | bool-T | float A+1 result |
| float | bool-F | float A+0 result |
| float | none | TypeError |
| float | String | TypeError |
| bool | none | TypeError |
| bool | String | TypeError |
| none | String | TypeError |
When computer created and programming language started, 1 was true and 0 was false.
== table
| A | B | result |
|---|
| int | int | bool result |
| int | float | bool result |
| int | bool | bool result |
| int | none | bool result |
| int | String | bool result |
| float | bool | bool result |
| float | none | bool result |
| float | String | bool result |
| bool | none | bool result |
| bool | String | bool result |
| none | String | bool result |
unlike Java, this is not comparing class. it compare values.
and, or truth table
As above table, the “and” “or” are for true and false.
If you put other type, or gate return B value
If you put other type, and gate return A value
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