numpy字符串操作 |拆分（）函数

numpy.core.defchararray.split(arr, sep=None, maxsplit=None)是另一个在 numpy 中进行字符串操作的函数。它返回字符串中的单词列表，使用 sep 作为 arr 中每个元素的分隔符字符串.

Parameters:
arr : array_like of str or unicode.Input array.
sep : [ str or unicode, optional] specifies the separator to use when splitting the string.
maxsplit : how many maximum splits to do.

Returns : [ndarray] Output Array containing of list objects.

代码#1：

# Python program explaining
# numpy.char.split() method 
  
# importing numpy 
import numpy as geek
  
# input array  
in_arr = geek.array(['geeks for geeks'])
print ("Input array : ", in_arr) 
  
# output array 
out_arr = geek.char.split(in_arr)
print ("Output splitted array: ", out_arr) 

输出：

Input array :  ['geeks for geeks']
Output splitted array:  [['geeks', 'for', 'geeks']]

代码#2：

# Python program explaining
# numpy.char.split() method 
  
# importing numpy 
import numpy as geek
  
# input array 
in_arr = geek.array(['Num-py', 'Py-th-on', 'Pan-das'])
print ("Input array : ", in_arr) 
  
  
# output array 
out_arr = geek.char.split(in_arr, sep ='-')
print ("Output splitted array: ", out_arr) 

输出：

Input array :  ['Num-py' 'Py-th-on' 'Pan-das']
Output splitted array:  [['Num', 'py'] ['Py', 'th', 'on'] ['Pan', 'das']]

代码#3：

# Python program explaining
# numpy.char.split() method 
  
# importing numpy 
import numpy as geek
  
# input array 
in_arr = geek.array(['Num-py', 'Py-th-on', 'Pan-das'])
print ("Input array : ", in_arr) 
  
  
# output array when maximum splitting 
# of every array element is 1
out_arr = geek.char.split(in_arr, sep ='-', maxsplit = 1)
print ("Output splitted array: ", out_arr) 

输出：

Input array :  ['Num-py' 'Py-th-on' 'Pan-das']
Output splitted array:  [['Num', 'py'] ['Py', 'th-on'] ['Pan', 'das']]