pydeelib is intended to be an extension to PyQt4 providing a simple development environment named “Pydee” - a powerful alternative to IDLE (see screenshots: http://pydee.googlecode.com) based on independent widgets interacting with each other: workspace (globals explorer with dict/list editor and numpy arrays editor), docstring viewer (calltip), history log, multiline code editor (support drag and drop, autocompletion, syntax coloring, …), environment variables editor (including a Windows-specific editor to change current user environement variables) and working directory browser.