So you want to participate in the booming “gig economy” creating an additional income stream by working from home? Members of my Python Freelancer Course ask this question a lot: what’s the best marketplace to sell your coding skills: Upwork.com or Fiverr.com? This is a multi-dimensional decision problem, but I have a clear preference. Read … Read more
I am not an attorney and this should not be taken as legal advice. It’s just based on my experience as a course creator. Teachable does not collect state sales taxes for you. They also don’t collect taxes for all international sales. If a user from Japan buys your course, you are responsible for paying … Read more
Have you ever calculated your market value as a Python developer? When estimating the value of a company, analysts often use multiples of its yearly earnings. Let’s take this approach to come up with a rough estimate of how much your Python skills are worth. Say, we are taking a low multiple of 10x of … Read more
If you’ve used the sklearn library in your own code, you may have realized that all attributes are suffixed with a trailing underscore. Here’s an example for the k-means algorithm: In the second-last line, we used the kmeans attribute cluster_centers_. Why does sklearn library not use the attribute name cluster_centers? ‘The short answer is, the … Read more
The answer to this one is simple (but not so easy to implement): Write a Python program to be executed on each machine. Write a (bash / shell) script that connects to your machines via SSH and starts the Python programs. You’ll need the IP addresses of all your machines. Use Python socket connections (based … Read more
You should style your code according to the PEP 8 standard which was co-authored by Python’s creator Guido van Rossum. It has very high credibility and Python coders all around the world follow this style guide. However, the style guide is quite lengthy and boring to read. I would rather recommend that you use an … Read more
String → Integer: Integer → String:
Today, many senior coders know that their peers are already earning six figures. Yet, most coders don’t. What are the factors that influence whether someone receives a high Python salary? Set Your Goals The Right Way: It sounds trivial but before you can start to increase your salary as a developer, you have to set … Read more
Guido doesn’t like lambda functions too much. Yet, most large code projects contain a lot of them! (Many coders use lambda functions as GUI callbacks, etc.) In this “Coffee Break Python” email series, we take a pragmatic approach regarding Python code style — living in the “is” rather than in the “should be” world. Can … Read more
You may know the following surprising code snippet: The following explanation is from the puzzle-based learning Python workbook: This puzzle performs a simple arithmetic computation adding together the float value 0.1. The question seems to be very simple—but as we’ll see in a moment, it’s not simple at all. Your inner voice is wrong. And … Read more
In this article, you’ll study a beautiful Python puzzle which was created by my friend and co-author Lukas. When I saw this puzzle the first time, I was very lazy about it. I looked at the puzzle and immediately threw my answer into Lukas’ face. It was so obvious… But Lukas kept smiling and I … Read more
To prevent data loss, do you want to create the following warning popup (alert) before a user of your web page attempts to close, reload, or leave the page via the “back” button? You can do this in a simple step: just copy and paste the following JavaScript code snippet between the <head> … </head> … Read more