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Validate Email Addresses in Python with email-validator

Whether you are creating a registration form for your website or you just need to delete all invalid email addresses from your mailing list, you can't help but perform the process of email validation. You need to validate if an email address is real by checking whether if it meets...

Dimitrije Stamenic

Dec 28, 2021

Article

Python: Count Number of Substring Occurrences in String

A substring is a continuous sequence of characters within a String. For instance, "substring" is a substring of "Find a substring within a string". Strings in Python are arrays of bytes representing Unicode characters and one of the most commonly used data types to represent data...

Darko Mladenovski

Nov 11, 2021

Article

Python: Validate Email Address with Regular Expressions (RegEx)

Regular Expressions, or RegEx for short, are expressions of patterns that can be used for text search and replace actions, validations, string splitting, and much more. These patterns consist of characters, digits and special characters, in such a form that the pattern matches certain segments of text we're searching through....

Anđela Niketić

Nov 10, 2021

Article

Validate Email Addresses with Regular Expressions in JavaScript

For web developers, validating user inputs in various types of forms is of crucial importance. Since that is the starting point of data being sent between the client and the server, you need to make sure that everything starts off on the right foot - lest you end up with...

Lazar Ristic

Oct 14, 2021

Article

Java Regular Expressions - Validate Phone Number

Regular Expressions (RegEx) are a powerful tool and help us match patterns in a flexible, dynamic and efficient way, as well as to perform operations based on the results. In this tutorial, we'll take a look at how to validate an phone number in Java, using Regular Expressions (RegEx). If...

David Landup

Sep 27, 2021

Article

Guide to Regular Expressions in Java

Regular Expressions (RegEx) are one of the most powerful tools in programming, yet they're also commonly misunderstood. They help you match patterns in a flexible, dynamic and efficient way, as well as allow you to perform operations based on the results. This can include validating certain patterns that exist in...

Bilal Hamada

Sep 23, 2021

Article

Guide to Regular Expressions and Matching Strings in JavaScript

Matching strings or string patterns can be a real struggle. In the most common cases, you'll need these to validate e-mails, user inputs, file names, or most kinds of input strings. While there are many pattern-matching libraries and approoaches - a time-tested approach is using Regular Expressions to define a...

Lazar Ristic

Aug 10, 2021

Article

Comparing Strings using Python

In Python, strings are sequences of characters, which are effectively stored in memory as an object. Each object can be identified using the id() method, as you can see below. Python tries to re-use objects in memory that have the same value, which also makes comparing objects very fast in...

Frank Hofmann

Aug 27, 2018·7 min read

Article

Using Regex for Text Manipulation in Python

Text preprocessing is one of the most important tasks in Natural Language Processing (NLP). For instance, you may want to remove all punctuation marks from text documents before they can be used for text classification. Similarly, you may want to extract numbers from a text string. Writing manual scripts for...

Usman Malik

Aug 17, 2018·14 min read