Edit Python Files in Notepad++
Set up syntax highlighting and safe file encoding for Python scripts.
Quick answer
Save the file with a `.py` extension, choose Language > P > Python if needed, and keep the source encoded as UTF-8.
When to use this feature
Notepad++ is an editor, not a Python interpreter; scripts run through a separate Python installation.
Step-by-step instructions for Windows users
- Open Notepad++ on Windows 10 or Windows 11 and save a backup of the file you plan to edit.
- Save the file with a `.py` extension, choose Language > P > Python if needed, and keep the source encoded as UTF-8.
- Use consistent spaces for indentation and check the terminal for Python syntax errors.
- Review the result and save a separate copy before replacing the original file.
Important details and compatibility
Use consistent spaces for indentation and check the terminal for Python syntax errors.
Menu labels can differ between versions, and plugins may require a compatible build. Check the application settings on your own PC rather than assuming all installations have the same options.
Common mistakes and safety
Do not assume a file is safe to execute simply because it opens in an editor.
If the result differs from what you expected, undo the change, reopen the original copy, and repeat the steps with a smaller sample.
Frequently asked question
Can Notepad++ run Python code?
It edits Python source; running it requires a Python runtime or configured external command.
Does this work in the US and Canada?
These Windows editing features are not region-restricted. The instructions use American English menu terminology and apply to supported Windows PCs in the United States and Canada.
Related Notepad++ resources
See the download guide, Windows 11 instructions, FAQ, and all tutorials.
Editorial team · Published 2026-10-20 · Updated 2026-10-20. This is an instructional guide, not a claim of hands-on testing on every Windows build.