About a year ago I wrote on this blog about how coding with LLMs would not work for me, even if there were no ethical or environmental concerns preventing me to use them. I'm not going to repeat the…

I recently started a new platform where I sell my books and courses, and in this website I needed to send account related emails to my users for things such as email address verification and password…

There is a trick that is spreading through social media. If you block the claude user on GitHub, then each time you visit a GitHub repository that has commits by this user you get a banner at the top…

This is a short blog post to announce that I'm migrating the site in which I host my paid courses to a new platform at https://learn.miguelgrinberg.com. If you have purchased a course or ebook…

Date and time management libraries in many programming languages are famously bad. Python's datetime module comes to mind as one of the best (worst?) examples, and so does JavaScript's Date class. It…

In this article I want to share a technique that I recently learned to display an interactive map on a website. For this, you will need just a few lines of HTML and JavaScript. This solution does not…

Like I did last year, I reserved some time during my holiday break to prepare an independent report of the Flask ecosystem in 2025.Project activityBefore I start showing you numbers, I feel it is…

A couple of months ago, I received a request from a random Internet user to add CSRF protection to my little web framework Microdot, and I thought it was a fantastic idea.When I set off to do this…

You may have seen the recent reports of a malware that stole API keys, tokens and other secrets from a large number of developers. Where were these secrets stolen from? You guessed it, they were…

How does Python 3.14 perform under a few hand-crafted benchmarks? Does the performance of asyncio scale on the free-threaded build? Christopher Trudeau is back on the show this week, bringing another…

In November of 2024 I wrote a blog post titled "Is Python Really That Slow?", in which I tested several versions of Python and noted the steady progress the language has been making in terms of…

In the Q&A session following my EuroPython 2025 presentation about the Microdot web framework, a member of the audience asked me what the performance of MicroPython running on a microcontroller…

People keep asking me If I use Generative AI tools for coding and what I think of them, so this is my effort to put my thoughts in writing, so that I can send people here instead of having to repeat…

Deciphering Glyph, the blog of Glyph Lefkowitz.

My article on creating a React + Flask project is one of the most visited on this blog. Can you believe that I wrote it over 5 years ago?In this article and video I'm going to share how I'm building…

Overarching tutorial for Python beginner and intermediate developers that teaches web development with the Flask framework.

The other day I shared my code editor window during a video call with a client, and he immediately did a double take. "How did you make your code look like that?", he wanted to know. Have a look at…

I've been given a review copy of The Quick Python Book, Fourth Edition by Naomi Ceder, published by Manning. Since I often get asked for Python book recommendations, I thought it would be a good idea…

Overarching tutorial for Python beginner and intermediate developers that teaches web development with the Flask framework.

In this tutorial I'm going to show you how to extend SQLAlchemy so that you can define database columns that are stored encrypted. In the solution I'm going to share, the columns that are designated…