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Python TypeError: object of type 'NoneType' has no len()

I was unable to find what is wrong in the following code, The error msg is "object of type 'NoneType' has no len()"   My Code ------> A=[31,22,14,15] def merge(list1,list2): output=[] i=0 j=0 length1=len

Senior Front-end Developer Wanted!

We are looking for talented front-end programmers who attach importance to details.   🌏 Wrocław (Poland) 🏢 Codemachine 💰 10 000 - 15 000 PLN net / month   ✔️ Your key skills: - technologies: JavaScript, HTML5, CSS3 - nice-to-have: TypeS

Senior Front-end Developer Job Opportunity!

‼️ Senior Front-end Developer 💻   We are looking for talented front-end programmers who attach importance to details. 🌏 Wrocław (Poland) 🏢 Codemachine 💰 10 000 - 15 000 PLN net / month   ✔️ Your key skills: - technologies: JavaScript,

Convert string into barcode image

Hi Readers, This blog includes a very simple example to convert a string into barcode image. As in one of my previous blogs I have explained how to read barcode with the help of iPhone camera and now in this blog I will explain how those barcodes wi

HTML5 Responsive Design - Media Queries (Part 2)

In the previous session, we learnt the basics of media queries and covered some points about how they are used to achieve responsiveness in web design. In this part, we’ll continue with other important aspects of the same. As we are well aware

SJCAM Introduced SJ7 Star High Quality 4K Action Cam - Initial Test and Review

SJCAM introduced the SJ7 Star , which the YI 4K (relatively late) should be competing on. For a long time, however, the 4K Action Cam was not available at all and thus disappeared in the sinking. Now, in January 2018, we finally got a copy and I want

Internet of Things Strategy You Should Consider for Effective Business

The concept of the internet of things (IoT) officially made the rounds online just before the turn of the 21st century. IoT refers to any device that can connect to the internet and transfer collected data to other internet-connected device

jQuery Accordion

Hello readers! In this Blog we will gain knowledge about Accordion and how to use it . An Accordion is a vertically stacked list of items which allows users to toggle the display of sections of content. Each item(Header in this example) can be expan

SQL Joins

The process of combining rows of two or more then two tables based on a common field between them are known as SQL joins. Types of SQL joins : INNER JOIN: It is returns rows only when at least one row matches from both tables. LEFT JOIN: It

Javascript Looping Array Elements

Basically Javascript previous version ES5(script 5) support three loops and new version ES6(script 6) version support two more loops i.e for-of loop (ES6 ) and an iterator (ES6) . 1) for each loop for each() method iterates the specific va

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