A simple visual Python 3 debugger and code editor based on pdb, PyQt5 and Scintilla

Requirements

pip install PyQt5 QScintilla intervaltree

Usage

• python -m qpdb
• python -m qpdb /path/to/foo.php
• python -m qpdb /path/to/foo.php /path/to/bar.php ...

Features

• One or multiple scripts can be loaded, either by:
  • passing it/them as commandline arguments
  • loading it/them via menu->File->Load...
  • dropping it/them into the application window
• If multiple files are loaded, you can use a combobox in the toolbar to switch between them and then add breakpoints
• You can add/remove breakpoints either by toolbar button or by clicking into column on the right of the linenumbers
• Current breakpoints are listed in the "Breakpoints" pane, clicking on a breakpont jumps to the corresponding code line
• Simple data types (str, int, float, bool) can be edited at runtime in the "Locals"/"Globals" panes
• You can jump to stack frames by clicking on the corresponding line in the "Stack" pane
• Comment (Alt+C)/uncomment (Alt+U) current code selection
• Click-sensitive "Outline" pane showing classes, methods and top-level functions
• Context-sensitive help, arbitrary CHM help files can be integrated, as well as Qt Assistant

Todo

• Multithreading support
• Currently qpdb was only tested in Windows and macOS, but making it Linux compatible should be no big deal.
• Currently qpdb uses the same Python executable it was started with for debugging scripts, but different Python versions/virtual environments should be supported as well.
• I might add some additional features to turn it into a real Python code editor, e.g.:
  • Settings dialog that allows finetuning of the editor's behavior (e.g. concerning line wrapping, tabs etc.)
  • Search/Replace
  • Bookmarks
  • Interactive Python shell for quickly testing stuff inside the app
  • FullScreen and Distraction-Free edit modes
  • ...

Screenshots

• qpdb debugging its own script (Windows 8.1):

  

• qpdb debugging its own script (macOS 10.15 Catalina):

  

• Autocomplete:

  

• Calltip:

  

• Context-sensitive help: