numpy字符串操作less()函数
numpy.core.defchararray.less(arr1, arr2) 是另一个在NumPy中进行字符串操作的函数。它逐一检查两个相同形状的字符串数组的元素,如果arr1的元素少于arr2的元素,即arr1 < arr2,则返回True。否则,它返回False。
参数:
arr1 : 类似于str或unicode的数组。第一个输入数组。
arr2 : 类似于str或unicode的数组。第二个输入数组。
返回: [ndarray] 输出布尔数组,如果arr1和arr2是标量,则输出单个布尔。
代码#1:
# Python program explaining
# numpy.char.less() method
# importing numpy
import numpy as geek
# input arrays
in_arr1 = geek.array('numpy')
print ("1st Input array : ", in_arr1)
in_arr2 = geek.array('number')
print ("2nd Input array : ", in_arr2)
# checking if in_arr1 < in_arr2
out_arr = geek.char.less(in_arr1, in_arr2)
print ("Output array: ", out_arr)
输出:
1st Input array : numpy
2nd Input array : number
Output array: False
代码#2:
# Python program explaining
# numpy.char.less() method
# importing numpy
import numpy as geek
# input arrays
in_arr1 = geek.array(['Geeks', 'for', 'Geek', 'Numpy'])
print ("1st Input array : ", in_arr1)
in_arr2 = geek.array(['Geek', 'for', 'geek', 'numpy'])
print ("2nd Input array : ", in_arr2)
# checking if in_arr1 < in_arr2
out_arr = geek.char.less(in_arr1, in_arr2)
print ("Output array: ", out_arr)
输出:
1st Input array : ['Geeks' 'for' 'Geek' 'Numpy']
2nd Input array : ['Geek' 'for' 'geek' 'numpy']
Output array: [False False True True]
代码#3:
# Python program explaining
# numpy.char.less() method
# importing numpy
import numpy as geek
# input arrays
in_arr1 = geek.array(['10', '11', '122', '15'])
print ("1st Input array : ", in_arr1)
in_arr2 = geek.array(['10', '13', '121', '141'])
print ("2nd Input array : ", in_arr2)
# checking if in_arr1 < in_arr2
out_arr = geek.char.less(in_arr1, in_arr2)
print ("Output array: ", out_arr)
输出:
1st Input array : ['10' '11' '122' '15']
2nd Input array : ['10' '13' '121' '141']
Output array: [False True False False]