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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Python’ Category

Mac OS X and python “ValueError: unknown locale: UTF-8”

Posted by jpluimers on 2016/05/03

On Mac OS X, to solve the Python error “ValueError: unknown locale: UTF-8“:

Add some lines to your ~/.bash_profile then re-start bash (or re-login):

export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8

–jeroen

via python – Pelican 3.3 pelican-quickstart error “ValueError: unknown locale: UTF-8” – Stack Overflow.

Posted in Development, Python, Software Development | Leave a Comment »

reStructuredText notes (.rst file extension)

Posted by jpluimers on 2016/04/28

Thanks to Eric Grange who asked Which lightweight markup language? I learned about reStructuredText (no cap R!) from a few comments Joseph Mitzen made.

It looks like reStructuredText has been around for much longer than Markdown, has better features (#1 for me: it is unambiguous, #2: native support on GitHub), but isn’t as popular. I think the latter is because finding editors supporting a live preview for it is a bit hard and tools are scattered around the net.

So here are a few notes on how I got reStructuredText to work on my Mac using OS X.

The hardest part was getting the reStructuredText preview for Atom to work:

  1. Verify you have recent apm/npm
  2. Download, then install the latest Mac Pandoc release (filename like “pandoc-*-osx.pkg”).
  3. Open Atom
  4. Menu “Atom” -> “Preferences” to open a “Settings” tab in the Atom user interface
  5. In the list “Settings”, “Keybindings”, “Packages”, “Themes”, “Updates”, “Install”, choose the last one: “Install”
  6. In the “Search packages” textbox, type “language-restructuredtext”, then hit Enter
  7. Wait a few seconds until “language-restructuredtext” appears in the list, then click the “Install”  button next to it
  8. In the “Search packages” textbox, type “rst-preview-pandoc”, then hit Enter
  9. Wait a few seconds until “rst-preview-pandoc” appears in the list, then click the “Install” button next to it
  10. To enable spell checking:
    1. In “Settings”, go to “Packages”
    2. Search for “spell-check”
    3. Click “settings”
    4. Add “gfm.restructuredtext” to the “Grammars” list
    5. Note you get “gfm.restructuredtext” from the “language-restructuredtext” package as described in Spell check in Atom – Atom quick tip #3 – Atom Editor Tips and Tricks.
  11. Restart Atom from the command-line (otherwise it will not find pandoc *)
  12. Open a reStructuredText file
  13. Press Ctrl-Shift-e to show the preview
  • pandoc error:

The error you get when pandoc cannot be found is this one:

‘pandoc’ could not be spawned. Is it installed and on your path? If so please open an issue on the package spawning the process.

It is easy to solve by modifying the Atom startup shell script and then don’t start Atom.app, but start atom from the command-line in a terminal window:

atom

For Windows:

  1. Install Chocolatey Gallery.
  2. Follow the steps at Hello Windows.
  3. Fails horribly: “The term ‘Install-ChocolateyPackage’ is not recognized as the name of a cmdlet”.
    1. Split-Path bug preventing Chocolatey to install a package · Issue #686 · chocolatey/chocolatey · GitHub.

A later try to get Pandoc installed on Windows was much easier: there is a Pandoc for Windows installer now.

Settings changes

I made a few, for instance:

  1. Ensure Tab to expands to spaces: See Soft Tabs and Tab Length under Settings > Editor Settings. via github – Atom – Change indentation mode – Stack Overflow.

Tables

Tables are always a hard thing in any markup. Luckily truben.no/table/ has a good table editor (it’s the same as table-editor.com) and can emit reStructuredText, Markdown, HTML and other formats.

More in the future

Give me some time, and I will post more about using the format and how it compares to my Markdown past.

Note that pandoc does not fully support reStructuredText (for instance not all table features are supported), but docutils rst2html.py does and also gives better warning/error information when parsing.

Here are some links about the reStructured syntax and how they can be rendered by rst2html.py:

For now, I’ll end with the goals of reStructuredText which I really like:

Read the rest of this entry »

Posted in Development, MarkDown, Perl, PHP, Power User, Python, reStructuredText, Scripting, Software Development | Leave a Comment »

Detecting the use of “curl | bash” server side | Application Security

Posted by jpluimers on 2016/04/20

From the “let people know when they are stupid” department:

Another reason not to pipe from curl to bash. Detecting curl | bash serverside.

Source: Detecting the use of “curl | bash” server side | Application Security

–jeroen

Posted in Development, Python, Scripting, Software Development | 1 Comment »

Coding Kata videos: Bowling game

Posted by jpluimers on 2015/04/22

A long and shorter while ago, I wrote about practicing your coding and test driven development skills:

Here are some Coding Kata videos of the Bowling Game Kata in various languages and environments. Some of them are dumb (no audio) just like good practice usually is. Note: it helps to know a bit about 10 Pin Bowling Scoring rules.

And since I want to learn Haskell and have done a lot of Tic-Tac-Toe demos inthe past:

For more background information:

–jeroen

Posted in .NET, C#, C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0, C# 6 (Roslyn), Development, Java, Python, RemObjects C#, Ruby, Software Development | Leave a Comment »

Free JavaScript and Python Books (via: revolunet)

Posted by jpluimers on 2014/09/17

Great to see the French company revolunet list a lot of non-French books on JavaScript and Python:

So where their government tries to make radio stations, written press, etc to favour French over other languages, French companies look beyond their borders.

Great!

–jeroen

via: revolunet: Rich Web Applications, HTML5, Sencha Touch, ExtJS, Phonegap.

Posted in Development, JavaScript/ECMAScript, Python, Scripting, Software Development | Leave a Comment »

ChromeCast emulation app for any device (via: dz0ny/leapcast)

Posted by jpluimers on 2014/03/18

Interesting open source project:

leapcast: ChromeCast emulation app for any device.

–jeroen

via:

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Online C#/VB.NET code fragment conversion tools

Posted by jpluimers on 2012/09/11

A few on-line code fragment conversion tools that I have come across in the past:

–jeroen

Posted in .NET, C#, Development, Python, Ruby, Scripting, Software Development, VB.NET | Leave a Comment »