numpy字符串操作 | rsplit()函数
numpy.core.defchararray.rsplit(arr, sep=None, maxsplit=None)
是另一个在 numpy 中进行字符串操作的函数。它返回字符串中单词的列表,使用 sep 作为 arr 中每个元素的分隔符字符串。 rsplit()
方法将每个字符串数组元素拆分为一个列表,从右侧开始,而split()
方法将每个字符串数组元素拆分为一个列表,从左侧开始。
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 : [ int, optional] how many maximum splits to do.
Returns : [ndarray] Output Array containing of list objects.
代码#1:
# Python program explaining
# numpy.char.rsplit() 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.rsplit(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.rsplit() 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.rsplit(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.rsplit() 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.rsplit(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']]