两个 NumPy字符串数组的元素级连接

在本文中，我们将讨论如何按元素连接两个字符串数组

例子 ：

Input :
A = ['Akash', 'Ayush', 'Diksha', 'Radhika']
B = ['Kumar', 'Sharma', 'Tewari', 'Pegowal']

Output :
A + B = [AkashKumar, AyushSharma, 'DikshTewari', 'RadhikaPegowal']

我们将使用numpy.char.add()方法。

Syntax : numpy.char.add(x1, x2)
Parameters :

• x1 : first array to be concatenated (concatenated at the beginning)
• x2 : second array to be concatenated (concatenated at the end)

Returns : Array of strings or unicode

示例 1：具有单个元素的字符串数组。

Python3

# importing library numpy as np
import numpy as np
 
# creating array as first_name
first_name = np.array(['Geeks'],
                      dtype = np.str)
print("Printing first name array:")
print(first_name)
 
# creating array as last name
last_name = np.array(['forGeeks'],
                     dtype = np.str)
print("Printing last name array:")
print(last_name)
 
# concat first_name and last_name
# into new array named as full_name
full_name = np.char.add(first_name, last_name)
print("\nPrinting concatenate array as full name:")
print(full_name)

输出 ：

Printing first name array:
['Geeks']
Printing last name array:
['forGeeks']

Printing concatenate array as full name:
['GeeksforGeeks']

示例 2：具有多个元素的字符串数组。

Python3

# importing library numpy as np
import numpy as np
 
# creating array as first_name
first_name = np.array(['Akash', 'Ayush', 'Diksha',
                       'Radhika'], dtype = np.str)
print("Printing first name array:")
print(first_name)
 
# creating array as last name
last_name = np.array(['Kumar', 'Sharma', 'Tewari',
                      'Pegowal'], dtype = np.str)
print("Printing last name array:")
print(last_name)
 
# concat first_name and last_name
# into new array named as full_name
full_name = np.char.add(first_name, last_name)
print("\nPrinting concatenate array as full name:")
print(full_name)

输出 ：

Printing first name array:
['Akash' 'Ayush' 'Diksha' 'Radhika']
Printing last name array:
['Kumar' 'Sharma' 'Tewari' 'Pegowal']

Printing concatenate array as full name:
['AkashKumar' 'AyushSharma' 'DikshaTewari' 'RadhikaPegowal']