numpy字符串操作 | swapcase()函数
numpy.core.defchararray.swapcase(arr)
函数按元素返回字符串的副本,其中大写字符转换为小写,小写字符转换为大写。
Syntax: numpy.char.swapcase(arr)
Parameters:
arr : [ array_like ] Input array which may be str or unicode.
Returns : [ndarray] Output lowercased array of str or unicode, depending on input type.
代码#1:
# Python Program explaining
# numpy.char.swapcase() function
import numpy as geek
in_arr = geek.array(['P4Q R', '4q Rp', 'Q Rp4', 'rp4q'])
print ("input array : ", in_arr)
out_arr = geek.char.swapcase(in_arr)
print ("output swapcasecased array :", out_arr)
输出:
input array : ['P4Q R' '4q Rp' 'Q Rp4' 'rp4q']
output swapcasecased array : ['p4q r' '4Q rP' 'q rP4' 'RP4Q']
代码#2:
# Python Program explaining
# numpy.char.swapcase() function
import numpy as geek
in_arr = geek.array(['Geeks', 'For', 'Geeks'])
print ("input array : ", in_arr)
out_arr = geek.char.swapcase(in_arr)
print ("output swapcasecased array :", out_arr )
输出:
input array : ['Geeks' 'For' 'Geeks']
output swapcasecased array : ['gEEKS' 'fOR' 'gEEKS']