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 »
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 »
At my job, we sometimes need to write a PDF to memory instead of disk because we need to merge an overlay on to it. By writing to memory, we can speed up the process since we won’t have the extra step of writing the file to disk and than reading it back into memory
PyPdf: How to Write a PDF to Memory Read More »
This topic comes up from time to time every year. Someone will ask about how to make their application full screen or how to just make it maximize when it first loads. So we’ll spend a little time showing you how to do each of these activities.
wxPython: Making your Frame Maximize or Full Screen Read More »
I see people asking about this topic from time to time in various places on the internet. Making wxPython minimize to the tray is really quite simple, but there is at least one thing you need to watch out for. We’ll get to that, but first we need to spend some time looking at some
wxPython: How to Minimize to System Tray Read More »