NumPy: Concatenate element-wise two arrays of string
NumPy String: Exercise-1 with Solution
Write a NumPy program to concatenate element-wise two arrays of string.
Sample Solution:-
Python Code:
import numpy as np
x1 = np.array(['Python', 'PHP'], dtype=np.str)
x2 = np.array([' Java', ' C++'], dtype=np.str)
print("Array1:")
print(x1)
print("Array2:")
print(x2)
new_array = np.char.add(x1, x2)
print("new array:")
print(new_array)
Sample Input:
(['Python', 'PHP'], dtype=np.str) ([' Java', ' C++'], dtype=np.str)
Sample Output:
Array1: ['Python' 'PHP'] Array2: [' Java' ' C++'] new array: ['Python Java' 'PHP C++']
Pictorial Presentation:
Python-Numpy Code Editor:
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
Previous: NumPy String Exercises Home.
Next: Write a NumPy program to repeat all the elements three times of a given array of string.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework