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Articles tagged with "python3"

  1. Including binary data in Python scripts

    Sometimes I need to use some binary data (e.g. a bitmap image) in a Python script. In a package, you can store this data portable in a data subdirectory of a modules using the package_data argument of setuptools.setup. This won’t work in a standalone script. You can of course make your script into a package, but here I want to show an alternative solution.

  2. A simple feed reader for Youtube

    As an exercise, I wrote a small script to read the Atom feeds for some favourite youtube channels. Of course I could have installed a “real” feed-reader, but that would be overkill and not half as much fun. :-)

  3. Attempting a conky replacement in Python (part 2)

    In part 1 we say that a simple replacement for conky for generating a statusline for i3 can be achieved. But since it uses the subprocess module to call external programs it is pretty CPU intensive.

    The question now is if we can reduce that? For that we’re going to use mmap to look at the mailbox, and call sysctlbyname(3) using ctypes to get the remaining system information. Note that sysctl et al and the names used are specific to FreeBSD.

  4. ImageMagick: convert vs Wand

    The ImageMagick suite has been in my software toolbox for years. It is my go-to tool for manipulating bitmap images. Over the years I have written several front-ends for specific tasks for in Python.

    In general, I have used the subprocess module to launch convert or mogrify from Python.

    With the release of Wand 0.5.0 which supports ImageMagick 7, I decided to try that by porting one of my scripts (foto4lb) to it. This turned out to be slower than using convert directly.

    But now it is 2021. Py-wand is at 0.6.7 and it is time to try again.

  5. Installing Pelican 4

    Pelican is the static site generator that I use for my website. This allows me to write my website posts in almost plain text (actually a light-weight markup language named reStructuredText), which are then translated into HTML. As someone who has written his webpages in HTML by hand, I can tell you that this is definitely an improvement.

    Although I use LaTeX for things that require high-quality typesetting, these days almost all my other writings are in reStructuredText.

    The previous pelican version 3.7 was basically the last Python 2.7 application that I use. So now that pelican supports Python 3, I’m switching. Since Pelican 4 is not in the FreeBSD ports tree yet, I’m installing it myself.

    Note

    As of 4.0.1, Pelican is now in the FreeBSD ports tree and I’m using the port www/py-pelican. At the moment I’m still installing typogrify and smartypants by hand.

  6. Using the FT232 with Python

    In this article I will try to document how to with with the FT232H using Python on FreeBSD. I will be using the Adafruit FT232H breakout board.

    Note that since I’m using FreeBSD, the library provided by FTDI doesn’t work. However, the library provided by Adafruit was written for Python 2, and doesn’t work with Python 3. I tried tinkering with it a bit to get it to work with Python 3, but that did not work out. In the end, I went with pyftdi since it doesn’t require a native library and it just works.

  7. Install ntpsec on FreeBSD

    A short article on how to install ntpsec on FreeBSD. Tested with 0.9.7 and 1.0.0.

    Note

    There is/was a bug in the ntpdate implementation that set the clock to a completely bogus value. So I’ve since written a simple script that runs from cron to fetch the time from a near NTP server.

    date: 2018-01-28
    modified: 2019-07-30
    reading time: 2 min.
    category: freebsd
    tags: ntp python3

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