# Python中的numpy.floor_divide()详细介绍

2021年3月9日16:17:45 发表评论 724 次浏览

numpy.floor_divide(arr1, arr2, /, out =None, 其中=true, cast ='同种‘, order =‘ķ‘, dtype = None)：

//运算子

%

(剩余), 以使

b = a％b + b *(a // b)

``````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.``````

``An array with floor(x1 / x2)``

``````# 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)``````

``````arr1         :  [2, 2, 2, 2, 2]
arr1         :  [2, 3, 4, 5, 6]

Output array :  [1 0 0 0 0]``````

``````# 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)``````

``````arr1         :  [2, 7, 3, 11, 4]

Output array :  [0 2 1 3 1]``````

``````# 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)``````

``````arr1         :  [2, 6, 21, 21, 12]
arr2         :  [2, 3, 4, -3, 6]

Output array :  [ 1  2  5 -7  2]``````

https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.floor_divide.html

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