numpy.floor_divide(arr1, arr2, /, out =None, 其中=true, cast ='同种‘, order =‘ķ‘, dtype = None)：
将第一个数组中的数组元素除以第二个数组中的元素(所有操作均按元素进行)。 arr1和arr2都必须具有相同的形状。
它等效于Python
//运算子
并与Python配对
%
(剩余), 以使
b = a％b + b *(a // b)
直到四舍五入。
参数：
arr1 : [array_like]Input array or object which works as numerator.
arr2 : [array_like]Input array or object which works as denominator.
out : [ndarray, None, optional]Output array with same dimensions as
Input array, placed with result.
**kwargs : Allows you to pass keyword variable length of argument to a function.
It is used when we want to handle named argument in a function.
where : [array_like, optional]True value means to calculate the universal
functions(ufunc) at that position, False value means to leave the
value in the output alone.返回：
An array with floor(x1 / x2)代码1：arr1除以arr2
# Python program explaining
# floor_divide() function
import numpy as np
# input_array
arr1 = [ 2 , 2 , 2 , 2 , 2 ]
arr2 = [ 2 , 3 , 4 , 5 , 6 ]
print ( "arr1 : " , arr1)
print ( "arr1 : " , arr2)
# output_array
out = np.floor_divide(arr1, arr2)
print ( "\nOutput array : " , out)输出：
arr1 : [2, 2, 2, 2, 2]
arr1 : [2, 3, 4, 5, 6]
Output array : [1 0 0 0 0]代码2：arr1的元素除以除数
# Python program explaining
# floor_divide() function
import numpy as np
# input_array
arr1 = [ 2 , 7 , 3 , 11 , 4 ]
divisor = 3
print ( "arr1 : " , arr1)
# output_array
out = np.floor_divide(arr1, divisor)
print ( "\nOutput array : " , out)输出：
arr1 : [2, 7, 3, 11, 4]
Output array : [0 2 1 3 1]代码3：如果arr2具有-ve元素, 则floor_divide的处理结果
# Python program explaining
# floor_divide() function
import numpy as np
# input_array
arr1 = [ 2 , 6 , 21 , 21 , 12 ]
arr2 = [ 2 , 3 , 4 , - 3 , 6 ]
print ( "arr1 : " , arr1)
print ( "arr2 : " , arr2)
# output_array
out = np.floor_divide(arr1, arr2)
print ( "\nOutput array : " , out)输出：
arr1 : [2, 6, 21, 21, 12]
arr2 : [2, 3, 4, -3, 6]
Output array : [ 1 2 5 -7 2]参考文献：
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.floor_divide.html
.
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