numpy字符串操作strip()函数
numpy.core.defchararray.strip(arr, chars=None) 是另一个在numpy中进行字符串操作的函数。它为arr中的每个元素返回一个去除前导和尾部字符的副本。
参数:
arr : 类似str或unicode的数组。
char : [str or unicode, optional] 要删除的字符集。如果省略或无,它将删除空白。chars参数不是一个前缀或后缀;它是我们想要去除的所有组合值。
返回: [ndarray] 输出str或unicode的数组,取决于输入类型。
代码#1:
# Python program explaining
# numpy.char.strip() method
import numpy as geek
# input arrays
in_arr = geek.array(['Sun', ' Moon ', 'Star'])
print ("Input array : ", in_arr)
out_arr = geek.char.strip(in_arr)
# whitespace removed from arr[1]
# as we have set chars = None
print ("Output array: ", out_arr)
输出:
Input array : ['Sun' ' Moon ' 'Star']
Output array: ['Sun' 'Moon' 'Star']
代码#2:
# Python program explaining
# numpy.char.strip() method
import numpy as geek
# input arrays
in_arr = geek.array(['Sun', ' Moon ', 'Star'])
print ("Input array : ", in_arr)
out_arr = geek.char.strip(in_arr, chars ='Sun')
# 'Sun' removed from arr[0] as we have set chars = Sun
print ("Output array: ", out_arr)
输出:
Input array : ['Sun' ' Moon ' 'Star']
Output array: ['' ' Moon ' 'tar']
代码#3:
# Python program explaining
# numpy.char.strip() method
import numpy as geek
# input arrays
in_arr = geek.array([ 'Geeks', 'For', 'Geeks'] )
print ("Input array : ", in_arr)
out_arr = geek.char.strip(in_arr, chars ='G')
#'G' removed from arr[0] and arr[2]
# as we have set chars ='G'
print ("Output array: ", out_arr)
输出:
Input array : ['Geeks' 'For' 'Geeks']
Output array: ['eeks' 'For' 'eeks']