Author archives: Mike

So you have an audio stream where you'd like to get a human-friendly readout of the current audio level. You add a level component, but how do you actually get the level messages it generates?

            bus.add_signal_watch()
            bus.connect( 'message', self.on_level )

It really seems that you *should* be able to use element.connect(), but there doesn't seem ...

Since I got asked about this in email I'll post it here for the google-verse. Say you want to allow your developers to use RunSnakeRun running in a virtualenv on an Ubuntu distribution.  You'll recall that normally to run RSR as a utility you do:

$ sudo apt-get install python-wxgtk2.8
$ pip install --user SquareMap ...

So you have an internal device the web-gui of which you want authenticated users to be able to access.  You've got nginx running on the front-end server. You're willing to open up a port on the outside firewall, but all access on that port needs to go through your main web-app's permissions. You setup an ...

There is a very minor new release on PyPi to allow Squaremap (and thus RunSnakeRun) to run on wxPython 3.0.0. The only people likely to be affected are those on bleeding-edge distros (Gentoo, Arch) or Windows.  You should be able to

pip install --update SquareMap

To get the latest version. Thanks to Kristof for the ...

After far too long, and way more changes than originally intended, PyOpenGL 3.1.0 final is now out. The big changes are:

So I've been doing a spike test with a project where I'm trying to use React.js to build a front-end to a Django application. The bulk of this application is basic Django forms, posts, page-loads, etc. but there's a number of complex views for scheduling, content uploading etc. As of now I think I'm willing ...

So the source of the segfaults that I'm seeing on fglrx and FreeGLUT on Kubuntu 14.04 has come to light. It's a known issue with the registration of FreeGLUT and fglrx at-exit handers (at the C level). You can work around it in your own code with PyOpenGL 3.1.0b3+ (which is still pending release) using: ...

I just finished doing a clean test run across those 3 releases of Python with each of the 8 major config flags on/off (i.e. 48 runs of the test suite). As expected, almost all of the failures were in Python 3.x, and mostly related to unicode, where COPY_ON_ERROR generated failures when a unicode string was ...

Since this was a bit of a pain to track down, here's the process, on an Ubuntu Server 12.04 machine, to create many ALSA dummy devices:

$ cat /etc/modprobe.d/alsa-dummy.conf 
options snd-dummy enable=1,1,1,1,1,1,1,1,1,1,1,1 pcm_devs=4,4,4,4,4,4,4,4,4,4,4,4 fake_buffer=0,0,0,0,0,0,0,0,0,0,0,0
$ modprobe snd-dummy

That sample creates 48 dummy devices (on 12 cards), though that's likely more than you'll ever need.  The ...

So you have a Dell Ubuntu 14.04 Laptop and it is running way too hot. You can configure it to run at a reasonable level using i8kmon. As with anything heat related, be careful. If you miss-configure the machine you are likely to wind up with a fried machine!

You create a file called /etc/i8kmon.conf and put the ...