198.md

@author jackzhenguo
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@date 2020/04/05

1 常见算术运算

x, y = 3, 2
print(x + y) # = 5 
print(x - y) # = 1 
print(x * y) # = 6 
print(x / y) # = 1.5 
print(x // y) # = 1 
print(x % y) # = 1 
print(-x) # = -3 
print(abs(-x)) # = 3 
print(int(3.9)) # = 3 
print(float(x)) # = 3.0 
print(x ** y) # = 9

大多数操作符都是不言自明的。注意，//运算符执行整数除法。结果是一个向下舍入的整数值（例如，3//2==1）

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