There are a lot of computer languages that include the ternary (or tertiary) operator, which is basically a one-line conditional expression in Python. If you’re interested, you can read about the various ways it’s rendered in other languages over on Wikipedia. Here we will spend some time looking at several different examples and why you […]
Python 101: The Ternary Operator Read More »
Some people complained about my last logging article, wondering if it was even necessary since the docs and Doug Hellman have already written on the topic. I sometimes wonder why I write on these topics too, but usually when I do, I get lots of readers. In this case, I’ve gotten almost 10,000 hits just
Python logging with lggr Read More »
The other day, I stumbled across a question on StackOverflow asking how to get the children widgets of a BoxSizer. In wxPython, you would expect to call the sizer’s GetChildren() method. However, this returns a list of SizerItems objects rather than a list of the actual widgets themselves. You can see the difference if you
wxPython: How to Get Children Widgets from a Sizer Read More »
People keep on asking fun wxPython questions on StackOverflow. Today they wanted to know how to make “flashing text” in wxPython. That’s actually a pretty easy thing to do. Let’s take a look at some simple code: import random import time import wx ######################################################################## class MyPanel(wx.Panel): “””””” #———————————————————————- def __init__(self, parent): “””Constructor””” wx.Panel.__init__(self, parent) self.font
wxPython: How to make “flashing text” Read More »
This week I bought Rick Copeland’s MongoDB with Python and Ming eBook from Amazon. It just came out in July 2012, so I figured I should check it out and see what all the fuss is with MongoDB and the whole NoSQL fad. Quick Review Why I picked it up: Mainly because I’ve been interested
eBook Review: MongoDB with Python and Ming Read More »
I am currently working on a book review for a college course Python book that uses the Python turtle module and Tkinter to help teach the Python programming language. Hopefully I’ll have that book done by the end of the month. In the mean time, it made me decide to give the turtle module a
Python: Using Turtles for Drawing Circles Read More »
Earlier this week, I wrote a simple post about Python’s Queues and demonstrated how they can be used with a threading pool to download a set of PDFs from the United States Internal Revenue Service’s website. Today I decided to try “porting” that code over to Python’s multiprocessing module. As one of my readers pointed
Python Concurrency: Porting from a Queue to Multiprocessing Read More »
Python provides a very powerful logging library in its standard library. A lot of programmers use print statements for debugging (myself included), but you can also use logging to do this. It’s actually cleaner to use logging as you won’t have to go through all your code to remove the print statements. In this tutorial
Python 101: An Intro to logging Read More »
Python comes with a lot of cool concurrency tools builtin, such as threads, Queues, semaphores and multiprocessing. In this article, we’ll spend some time learning how to use Queues. A Queue can be used for first-in-first out or last-in-last-out stack-like implementations if you just use them directly. If you’d like to see that in action,
Python Concurrency: An Example of a Queue Read More »
Today on StackOverflow I saw someone who wanted to know how to drag a file from a wx.ListCtrl onto their Desktop or somewhere else in the file system. They were using the file manager skeleton from zetcode, but couldn’t figure out how to add the DnD portion. After a bit of searching and hacking, I
wxPython: How to drag and drop a file from your app to the OS Read More »