numpy string operations | not_equal() function Last Updated : 28 Nov, 2022 Comments Improve Suggest changes Like Article Like Report numpy.core.defchararray.not_equal(arr1, arr2) is another function for doing string operations in numpy. It checks the elements of two same shaped array one by one and returns True if they are not equal. Otherwise, it returns False. Parameters: arr1 : array_like of str or unicode. arr2 : array_like of str or unicode.Returns : [ndarray] Output array of bools, or a single bool if arr1 and arr2 are scalars. Code #1 : Python3 # Python program explaining # numpy.char.not_equal() method # importing numpy import numpy as geek # input arrays in_arr1 = geek.array('numpy') print ("1st Input array : ", in_arr1) in_arr2 = geek.array('numpy') print ("2nd Input array : ", in_arr2) # checking if they are not equal out_arr = geek.char.not_equal(in_arr1, in_arr2) print ("Output array: ", out_arr) Output: 1st Input array : numpy 2nd Input array : numpy Output array: False Code #2 : Python3 # Python program explaining # numpy.char.not_equal() method # importing numpy import numpy as geek # input arrays in_arr1 = geek.array(['Geeks', 'for', 'Geeks']) print ("1st Input array : ", in_arr1) in_arr2 = geek.array(['Geek', 'for', 'Geek']) print ("2nd Input array : ", in_arr2) # checking if they are not equal out_arr = geek.char.not_equal(in_arr1, in_arr2) print ("Output array: ", out_arr) Output: 1st Input array : ['Geeks' 'for' 'Geeks'] 2nd Input array : ['Geek' 'for' 'Geek'] Output array: [ True False True] Code #3 : Python3 # Python program explaining # numpy.char.not_equal() method # importing numpy import numpy as geek # input arrays in_arr1 = geek.array(['10', '11', '12']) print ("1st Input array : ", in_arr1) in_arr2 = geek.array(['10', '11', '121']) print ("2nd Input array : ", in_arr2) # checking if they are not equal out_arr = geek.char.not_equal(in_arr1, in_arr2) print ("Output array: ", out_arr) Output: 1st Input array : ['10' '11' '12'] 2nd Input array : ['10' '11' '121'] Output array: [False False True] Comment More info J jana_sayantan Follow Improve Article Tags : Python Python-numpy Python numpy-String Operation Explore Python FundamentalsPython Introduction 3 min read Input and Output in Python 4 min read Python Variables 5 min read Python Operators 5 min read Python Keywords 2 min read Python Data Types 8 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 7 min read Python Functions 5 min read Recursion in Python 6 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 5 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 12 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 6 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library- Tutorial 4 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 7 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 7 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 3 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like