insert

此函数沿给定轴和给定索引之前在输入数组中插入值。 如果将值的类型转换为插入，则它与输入数组不同。 插入没有到位，函数返回一个新数组。 此外，如果未提及轴，则输入数组变平。

insert（）函数采用以下参数 -

numpy.insert(arr, obj, values, axis)

Where,

例子 (Example)

import numpy as np 
a = np.array([[1,2],[3,4],[5,6]]) 
print 'First array:' 
print a 
print '\n'  
print 'Axis parameter not passed. The input array is flattened before insertion.'
print np.insert(a,3,[11,12]) 
print '\n'  
print 'Axis parameter passed. The values array is broadcast to match input array.'
print 'Broadcast along axis 0:' 
print np.insert(a,1,[11],axis = 0) 
print '\n'  
print 'Broadcast along axis 1:' 
print np.insert(a,1,11,axis = 1)

其产出如下 -

First array:
[[1 2]
 [3 4]
 [5 6]]
Axis parameter not passed. The input array is flattened before insertion.
[ 1 2 3 11 12 4 5 6]
Axis parameter passed. The values array is broadcast to match input array.
Broadcast along axis 0:
[[ 1 2]
 [11 11]
 [ 3 4]
 [ 5 6]]
Broadcast along axis 1:
[[ 1 11 2]
 [ 3 11 4]
 [ 5 11 6]]