Python 中的 numpy.floor_divide()
numpy.floor_divide(arr1，arr2，/，out = None ，其中= True ，casting = ' 同类'，order = ' K '，dtype = None ):
第一个数组中的数组元素除以第二个数组中的元素(都是按元素进行的)。arr1 和 arr2 必须具有相同的形状。 相当于 Python //运算符，与 Python % (余数)配对，作用为 b = a % b + b * (a // b) 向上舍入。
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 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 有-ve 元素则 floor_divide 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 。
