Python内置函数(16)-divmod(比较常用)

官方文档

divmod(a, b)

Take two (non complex) numbers as arguments and return a pair of numbers consisting of their quotient and remainder when using integer division. With mixed operand types, the rules for binary arithmetic operators apply. For integers, the result is the same as (a // b, a % b). For floating point numbers the result is (q, a % b), where q is usually math.floor(a / b) but may be 1 less than that. In any case q * b + a % b is very close to a, if a % b is non-zero it has the same sign as b, and 0 <= abs(a % b) < abs(b).

说明：1.接收两个数值(非复数)，返回两个数值相除得到的商，和余数组成的元组

         2.如果参数都是整数，相当于(a//b,a%b)

ret = divmod(5,2)
print(ret)
#输出  (2, 1)

   　　3.如果参数是浮点数，相当于(math.floor(a/b),a%b)

ret = divmod(8.5,3.4)
print(ret)
#输出 (2.0, 1.7000000000000002)

使用场景

用于对数据进行分页，例如总共有5001页条数据，要求每页20条数据，对于总页数的计算只需要使用divmod即可，代码如下：

ret = divmod(5001,20)
print(ret)
#输出  (250, 1)

由于余数不为0，则总页数为251页