NOTE: This article is for wxPython 2.9-3.0. If you are using wxPython 4, you should go to my newer article Several years ago, I wrote a tutorial about wxPython 2.8 and its built-in pubsub module which you can read here. Back then, a new API for pubsub was added in wxPython 2.8.11.0 that could be […]
wxPython 2.9 and the Newer Pubsub API: A Simple Tutorial Read More »
Every now and then, I see someone wondering how to create a progress bar and update it. So I decided to whip up an example application that updates a progress bar (technically a wx.Gauge widget) from a thread. In this tutorial, we will create a frame with a button. When the button is pushed, it
wxPython: How to Update a Progress Bar from a Thread Read More »
Earlier this year, Packt Publishing asked me to be a technical reviewer of one of their upcoming books, “Building Machine Learning Systems with Python” by Willi Richert and Luis Pedro Coelho. Now the book is available for purchase and they have asked me to write a little about it. I haven’t read through the finished
Book Preview: Building Machine Learning Systems with Python Read More »
Have you ever needed to add page numbers to your Reportlab generated PDF but didn’t know how? Well you’ve come to the right place. We’re going to look at how to add page number in three different circumstances: How to add page numbers with just the canvas object How to add page numbers using the
Reportlab: How to Add Page Numbers Read More »
This week I was trying to figure out how to make Reportlab do something I had never attempted before. Namely, I wanted to create about a half page’s worth of static text positioned exactly and then have a table of line items that could potentially fill the rest of the page and continue for N
Reportlab: How to Combine Static Content and Multipage Tables Read More »
Today I was reading the wxPython Google group / mailing list and there was someone asking about how to make Python’s logging module write its output to file and to a TextCtrl. It turns out that you need to create a custom logging handler to do it. At first, I tried just using a normal
wxPython: How to Redirect Python’s Logging Module to a TextCtrl Read More »
Today, I came across an interesting question on StackOverflow where the author was asking how he could write a wxPython program dynamically. In other words, he wanted to be able to edit the code and basically refresh the application without closing and re-running his code. The simplest way would be to use Python’s built-in reload
wxPython: How to Edit Your GUI Interactively Using reload() Read More »
I recently became aware of a Tic-Tac-Toe challenge on github where the programmer is supposed to create a Tic-Tac-Toe game that let’s the player win every time. You have to code it in Python, although the people behind this challenge prefer you do it with Django. I don’t know Django very well, so I decided
wxPython: Creating a Simple Tic-Tac-Toe Game Read More »
I recently tried to help someone (on the wxPython mailing list) figure out how to use a Grid widget (wx.grid.Grid) via XRC. It should be simple, but if you run the code below, you’ll discover a weird issue: import wx from wx import xrc ######################################################################## class MyApp(wx.App): def OnInit(self): self.res = xrc.XmlResource(“grid.xrc”) frame = self.res.LoadFrame(None,
wxPython: Creating a Grid with XRC Read More »
In this article we will be taking the code from the previous article on Bottle and changing it such that it uses SQLAlchemy instead of just normal SQLite code. This will require you to download the bottle-sqlalchemy package from PyPI. You can also install it using “pip install bottle-sqlalchemy”, assuming you have pip installed. You
Bottle – Adding SQLAlchemy to the Todo List Web App Read More »
Python has lots of web frameworks. Bottle is one of them and is considered a WSGI Framework. It’s also sometimes called a “micro-framework”, probably because Bottle consists of just one Python file and has no dependencies besides Python itself. I’ve been trying to learn it and I was using the official Todo-list tutorial on their
Bottle – Creating a Python Todo List Web App Read More »
Have you ever wondered how to embed custom fonts in Reportlab? Or maybe you just want to switch fonts or change the font’s color. Well in this tutorial, we’ll take a look at all of these questions. You’ll need to go out and download a copy of Reportlab as it isn’t a part of the
Reportlab – All About Fonts Read More »
Today I decided to figure out how to make Python log to a file and the console simultaneously. Most of the time, I just want to log to a file, but occasionally I want to be able to see stuff on the console too to help with debugging. I found this ancient example in the
Python Logging: How to Log to Multiple Locations Read More »
Yesterday, I stumbled on to Dropbox’s Python API. I ended up using their tutorial to design a simple class for accessing my Dropbox. You’ll need to download their dropbox module to follow along or use “pip install dropbox” to install it. You will also need to sign up for a key and secret. Once you
Connecting to Dropbox with Python Read More »
My wife teaches 3rd grade math and she recently learned about the process of obtaining the digital root of numbers. The digital root is a single digit number found by summing the individual digits. So for 15, you would add 1+5 to get 6. Thus 6 is the digital root of 15. The trainer that
Using Python to Teach About Finding the Digital Root Read More »