Python syntax highlighting

  • Hi all, thanks in advance for the help. New to NP++, I’m switching over from IDLE for Python coding because IDLE still has no support for code folding. Wondering if NP++ has a option for highlighting the keywords that would normally be purple in IDLE - things like the int() function, IndexError/KeyError/etc, the input() function, etc. Can’t seem to find a setting for this.

  • Hi Queer Chemist :

    You can set the Python syntax highlighting as follows:

    Settings -> Style Configurator… -> Language: -> Python

    It is my recommendation that before this, you:

    • Copy the default stylers.xml file in C:\Users\My_Account\AppData\Roaming\Notepad++ into C:\Users\My_Account\AppData\Roaming\Notepad++\themes and give it a new name like “My_Theme.xml”.
    • Select “My_Theme” in the Style Configurator and make your changes there as to not modify the default theme.
    • Maybe select Language: -> Global Styles first and adjust a few global style settings before adjusting a few language-specific style settings.

    Good luck!


  • Hi Steve,

    Thanks for your response! I’ve actually already set syntax highlighting to Python with the Style Configurator and it works great for things like comments, while/try/except/if, strings, etc. but the things mentioned in my original post that would normally be highlighted as purple in IDLE don’t seem to be an available option. Is there a way to add custom “keywords”?

    Thanks again!

  • You may want to look at C:\Program Files (x86)\Notepad++\langs.model.xml and C:\Program Files (x86)\Notepad++\autoCompletion\python.xml. The second file contains a much longer list of key words which can probably be added to the first file. Make sure that you make a backup of these file before you make any changes to them.

    Note that I have not added words from the second file to the first file so I am just assuming that this will work.


  • @Queer-Chemist said:

    Is there a way to add custom “keywords”?

    Yes. You can manually edit the XML config files, as @Steven-Haymes suggested. Or you can go to Settings -> Style Configurator… -> Language: -> Python, and then select KEYWORDS, and add whatever user-defined keywords you want.

    This won’t, however, keep them separately colored compared to normal Python keywords. If you want the new keywords colored separately, you cannot do it natively. However, using the PythonScript plugin (see this guide for installation instructions), and the EnhanceAnyBuiltinLexer PythonScript which @ekopalypse shared some months back, which will allow you to set a regular expression to add extra highlighting that the active lexer isn’t providing

  • Pete,

    Thanks for the better answer! I have not had to use this very obvious feature of the Style Configurator 🙄


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