numpy字符串操作 | isnumeric()函数
如果只有数字字符并且至少有一个字符, numpy.core.defchararray.isnumeric(arr)
函数对每个元素返回 true。否则返回 false。
Parameters:
arr : array_like of str or unicode.
Returns : [ndarray] Output array of bools.
代码#1:
# Python program explaining
# numpy.char.isnumeric() method
import numpy as geek
# input array contains only numeric character
in_arr = geek.array([ '1000', '2000'] )
print ("Input array : ", in_arr)
out_arr = geek.char.isnumeric(in_arr)
print ("Output array: ", out_arr)
输出:
Input array : ['1000' '2000']
Output array: [ True True]
代码#2:
# Python program explaining
# numpy.char.isnumeric() method
import numpy as geek
# input array
in_arr = geek.array([ 'python3.5', 'a1000', '1234 ab'] )
print ("Input array : ", in_arr)
out_arr = geek.char.isnumeric(in_arr)
print ("Output array: ", out_arr)
输出:
Input array : ['python3.5' 'a1000' '1234 ab']
Output array: [False False False]