numpy字符串操作rjust()函数
numpy.core.defchararray.rjust(arr, width, fillchar=’ ‘) 是另一个在numpy中进行字符串操作的函数。它返回一个数组,数组中的元素在长度为宽度的字符串中被右对齐。它使用fillchr参数填充每个数组元素的剩余空间,如果没有传递fillchr,则用空白填充剩余空间。
参数:
arr : 类似于str或unicode的数组。输入数组。
width :每个字符串的最终宽度。
fillchar : 填充剩余空间的字符。
返回: [ndarray] 根据输入类型,输出str或unicode的右对齐数组。
代码#1:
# Python program explaining
# numpy.char.rjust() method
# importing numpy
import numpy as geek
# input array
in_arr = geek.array(['Numpy', 'Python', 'Pandas'])
print ("Input array : ", in_arr)
# setting the width of each string to 8
width = 8
# output array when fillchar is not passed
out_arr = geek.char.rjust(in_arr, width)
print ("Output right justified array: ", out_arr)
输出:
Input array : ['Numpy' 'Python' 'Pandas']
Output right justified array: [' Numpy' ' Python' ' Pandas']
代码#2:
# Python program explaining
# numpy.char.rjust() method
# importing numpy
import numpy as geek
# input array
in_arr = geek.array(['Numpy', 'Python', 'Pandas'])
print ("Input array : ", in_arr)
# setting the width of each string to 8
width = 8
# output array
out_arr = geek.char.rjust(in_arr, width, fillchar ='*')
print ("Output right justified array: ", out_arr)
输出:
Input array : ['Numpy' 'Python' 'Pandas']
Output right justified array: ['***Numpy' '**Python' '**Pandas']
代码#3:
# Python program explaining
# numpy.char.rjust() method
# importing numpy
import numpy as geek
# input array
in_arr = geek.array(['1', '11', '111'])
print ("Input array : ", in_arr)
# setting the width of each string to 5
width = 5
# output array
out_arr = geek.char.rjust(in_arr, width, fillchar ='-')
print ("Output right justified array: ", out_arr)
输出:
Input array : ['1' '11' '111']
Output right justified array: ['----1' '---11' '--111']