What Are Context Managers in Python?

What is a Context Manager in Python?

According to the Python glossary, a context manager is —

An object which controls the environment seen in a with statement by defining enter() and exit() methods.

gunicorn vs uvicorn notes

TLTR: gunicorn for WSGI app (like Flask), uvicorn for ASGI app (like FastAPI)

[Python] Search value in list of dictionary benchmark

This is a test how fast we can search value in a very large list of dict by various way

[Python] Graceful stop FFMPEG recording process on Windows


When we want to stop ffmpeg stream recording on Windows programmatically, these sollution will not work:

# asume p is the subprocess.Popen command call ffmpeg
os.kill(p.pid, signal.CTRL_C_EVENT)  # parent process get kill too, recording file is not playable
# or 
p.terminate()  # not good, recording file is not playable
# or
p.send_signal(signal.CTRL_C_EVENT) # parent process get kill too, recording file is not playable

[Learning] Odoo super call dependency test

A test logs how Odoo process modules dependency with different install order

Test source code: https://github.com/NothingCtrl/odoo_super_dep_test

[BugFix] Python return incorrect MimeType for Js file under Windows 10

For unkown reason, python webserver return MimeType text/plain for all .js file when running under Windows 10

[Learning] The dangers of assert in Python (a.k.a know what you're doing!)

There are many ways to find bugs in Python code: the built-in debugger (pdb), a healthy amount of unit tests, a debugger in an IDE like Pycharm or Visual Studio, try/catch statements, if/else statements, assert statements, or the tried and true practice of covering every inch of your codebase in print() statements like it’s going out of style.

Assert statements can help us catch bugs quickly and are far less intrusive than copious amounts of print statements. However, unlike print statements, assert statements can be unexpectedly risky to use!

This article explores how to use asserts safely and what causes them to be unsafe. By the end of this article, you’ll know how to use assert most optimally without inadvertently opening yourself up to security issues.