Chris How can you insert an element at a given index in a given list? Python’s insert() method is your friend. This tutorial shows you everything you need to know to help you master an essential method of the most fundamental container data type in the Python programming language. Definition and Usage: The list.insert(i, element) method … Read more
How can you not one but multiple elements to a given list? Use the extend() method in Python. This tutorial shows you everything you need to know to help you master an essential method of the most fundamental container data type in the Python programming language. Definition and Usage The list.extend(iter) method adds all elements … Read more
… Without Working Full-Time Hours! In this article, you are going to learn my exact strategy how to earn $3000 per month as a Python freelancer without actually working full-time and without sacrificing time with your family! This article is based on the following webinar I gave to my community of Python coders. You … Read more
So you have two or more lists and you want to glue them together. This is called list concatenation. How can you do that? These are six ways of concatenating lists: List concatenation operator + List append() method List extend() method Asterisk operator * Itertools.chain() List comprehension Output: What’s the best way to concatenate two … Read more
How can you add more elements to a given list? Use the append() method in Python. This tutorial shows you everything you need to know to help you master an essential method of the most fundamental container data type in the Python programming language. Definition and Usage The list.append(x) method—as the name suggests—appends element x … Read more
A profound understanding of Python lists is fundamental to your Python education. Today, I wondered: what’s the difference between two of the most-frequently used list methods: append() vs. extend()? I shot a small video explaining the difference and which method is faster—you can play it as you read over this tutorial: Here’s the short answer … Read more
The most important collection data type in Python is the list data type. You’ll use lists basically in all your future projects so take 3-5 minutes and study this short guide carefully. You can also play my short video tutorial as you read over the methods: Method Description lst.append(x) Appends element x to the list … Read more
Today, I stumbled upon this beautiful regex problem: Given is a multi-line string and a regex pattern. How to find all lines that do NOT contain the regex pattern? I’ll give you a short answer and a long answer. The short answer is to use the pattern ‘((?!regex).)*’ to match all lines that do not … Read more
This morning, I read over an actual Quora thread with this precise question. While there’s no dumb question, the question reveals that there may be some gap in understanding the basics in Python and Python’s regular expression library. So if you’re an impatient person, here’s the short answer: How to match an exact word/string using … Read more
The web is full of tutorials about regular expressions. But I realized that most of those tutorials lack a thorough motivation. Why do regular expressions exist? What are they used for? What are some practical applications? Somehow, the writers of those tutorials believe that readers are motivated by default to learn a technology that’s complicated … Read more
This tutorial explains everything you need to know about matching groups in Python’s re package for regular expressions. You may have also read the term “capture groups” which points to the same concept. As you read through the tutorial, you can also watch the tutorial video where I explain everything in a simple way: Related … Read more
Morse code was developed in telecommunications to encode the alphabetic characters in binary signals (“long” and “short”, or “1” and “0”). Here’s the Morse code table: This tutorial shows you how to implement a simple Morse code translator in Python. You can also play the explainer video as you read through the article: The code … Read more