Python 3.13 adds the ability to remove the Global Interpreter Lock (GIL) per PEP 703. Just this past week, a PR was merged in that allows the disabling of the GIL using a command line flag or an environment variable in free-threaded builds. Note that Python must be built using the Py_GIL_DISABLED flag for this […]
Python 3.13 Allows Disabling of the GIL + subinterpreters Read More »
Introduction to Batch APIs In modern Python applications, it’s common to access remote API using REST or other web-based technologies. Batch APIs are capable of processing multiple requests with a single call. You can use batch APIs to reduce the number of network calls to the remote service. This is ideal when you have to
Using Asyncio and Batch APIs for Remote Services Read More »
In this video tutorial, you will learn how Python’s Boolean operators work. You will also learn about Python’s None keyword Did you enjoy the video? Check out the book that it’s based on: Python 101 – 2nd Edition.
Python 101 – Boolean Operators and None (Video) Read More »
Most CPU manufacturers are creating multi-core CPUs now. Even cell phones come with multiple cores! Python threads can’t use those cores because of the Global Interpreter Lock. Starting in Python 2.6, the multiprocessing module was added which lets you take full advantage of all the cores on your machine. In this article, you will learn
Python 101 – Creating Multiple Processes Read More »
Tuples are another sequence type in Python. Tuples consist of a number of values that are separated by commas. A tuple is immutable whereas a list is not. Immutable means that the tuple has a fixed value and cannot change. You cannot add, delete or modify items in a tuple. Immutable objects are useful when
Python 101 – Learning About Tuples Read More »
There are several Python code checkers available. For example, a lot of developers enjoy using Pylint or Flake8 to check their code for errors. These tools use static code analysis to check your code for bugs or naming issues. Flake8 will also check your code to see if you are adhering to PEP8, Python’s style
Intro to Black – The Uncompromising Python Code Formatter Read More »
In honor of PyCon 2019 that is starting this week, I am putting three of my books on sale. You can get any of the following books for $9.99 through May 6th by clicking on the links: Python 201: Intermediate Python ReportLab – PDF Processing with Python Jupyter Notebook 101 Python 201 is a fun
Books on Sale for PyCon 2019 Read More »
The Publish-Subscribe pattern is pretty common in computer science and very useful too. The wxPython GUI toolkit has had an implementation of it for a very long time in wx.lib.pubsub. This implementation is based on the PyPubSub package. While you could always download PyPubSub and use it directly instead, it was nice to be able
wxPython 4 and PubSub Read More »
Learn the basics of using Python’s built-in debugger, pdb. Note that this screencast was recorded before Python 3.6 and 3.7 so it does not cover some of the new enhancements in the debugger. You can read the chapter this screencast is based on here: http://python101.pythonlibrary.org/chapter24_debugging.html
Python 101: Episode #24 – Debugging with pdb Read More »
In this screencast, you will learn the basics of using Python’s threading module. If reading is more your thing, then check out the chapter this is based on over at http://python101.pythonlibrary.org/ or get the book at https://leanpub.com/python_101
Python 101: Episode #21 – Using Threads Read More »
Machine Learning, artificial intelligence and face recognition are big topics right now. So I thought it would be fun to see how easy it is to use Python to detect faces in photos. This article will focus on just detecting faces, not face recognition which is actually assigning a name to a face. The most
Face Detection Using Python and OpenCV Read More »
In this screencast, we will learn the basics of Python’s subprocess module. Feel free to read the book that this video is based on here: http://python101.pythonlibrary.org/ or purchase the book on Leanpub
Python 101: Episode #19 – The subprocess module Read More »
In this screencast, we will be learning about Python’s builtin sqlite module. This episode is based on chapter 18 of Python 101, which you can read here: http://python101.pythonlibrary.org/
Python 101: Episode #18 – The sqlite Module Read More »
In this episode you will learn about Python’s os module. This episode is based on my book, Python 101, which you can get on Leanpub here https://leanpub.com/python_101 or read online at http://python101.pythonlibrary.org/
Python 101: Episode #16 – The os Module Read More »
In this screencast, you will learn the basics of using Python’s configparser module
Python 101 Screencast: Episode #14 – The configparser module Read More »