What is the numpy.delete() function in Python?
Overview
The delete() function in Python is used to delete the sub-arrays of a given array along a specified axis.
Syntax
The delete() function takes the syntax below:
numpy.delete(arr, obj, axis=None)
Parameter value
The delete() function takes the following parameter values:
arr: This is the input array. It is a required parameter.obj: This specifies the index number or position of the sub-array ofato be deleted. It is a required parameter.axis: This is the axis along which the sub-array of the input array is to be deleted. It is an optional parameter.
Return value
The delete() function returns a copy of the input array, a , except that the elements specified by obj are removed.
Example
import numpy as np# creating an input arraya = np.array([[1,2,3], [4,5,6], [7,8,9]])# calling the tile() functionmy_array = np.delete(a, 1, axis=0)# printing the input array and the new arrayprint(a)print(my_array)
Explanation
- Line 1: We import the
numpymodule. - Line 3: We create an input array,
a, using thearray()function. - Line 6: We call the
delete()function on the input array. The result is assigned to a variable,my_array. - Line 9: We print the new array,
my_array.
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