假設變數a的值是10，變數b的值是21，則 -
| 運算子 | 描述 | 範例 |
|---|---|---|
+ |
加法運算，將運算子兩邊的運算元增加。 | a + b = 31 |
- |
減法運算，將運算子左邊的運算元減去右邊的運算元。 | a – b = -11 |
* |
乘法運算，將運算子兩邊的運算元相乘 | a * b = 210 |
/ |
除法運算，用右運算元除左運算元 | b / a = 2.1 |
% |
模運算，用右運算元除數左運算元並返回餘數 | b % a = 1 |
** |
對運算子進行指數(冪)計算 | a ** b，表示10的21次冪 |
// |
地板除 - 運算元的除法，其結果是刪除小數點後的商數。 但如果其中一個運算元為負數，則結果將被保留，即從零(向負無窮大)捨去 | 9//2 = 4 ， 9.0//2.0 = 4.0, -11//3 = -4, -11.0//3 = -4.0 |
假設變數a的值是10，變數b的值是21，參考以下程式碼實現 -
#!/usr/bin/python3
#coding=utf-8
# save file : arithmetic_operators_example.py
a = 21
b = 10
c = 0
c = a + b
print ("Line 1 - Value of c is ", c)
c = a - b
print ("Line 2 - Value of c is ", c )
c = a * b
print ("Line 3 - Value of c is ", c)
c = a / b
print ("Line 4 - Value of c is ", c )
c = a % b
print ("Line 5 - Value of c is ", c)
a = 2
b = 3
c = a**b
print ("Line 6 - Value of c is ", c)
a = 10
b = 5
c = a//b
print ("Line 7 - Value of c is ", c)
將上面程式碼儲存到檔案： arithmetic_operators_example.py 中，執行結果如下 -
F:\worksp\python>python arithmetic_operators_example.py
Line 1 - Value of c is 31
Line 2 - Value of c is 11
Line 3 - Value of c is 210
Line 4 - Value of c is 2.1
Line 5 - Value of c is 1
Line 6 - Value of c is 8
Line 7 - Value of c is 2