http://mmm-experts.com/Products.aspx?ProductId=4
"... good editor, online Python shell, graphical debugger with step by step, showing variables values in popups and many other ..." features
"Auto-completion, call-tips, syntax highlighting, class browser, debugger, very fast (build with Delphi & Python for Delphi (P4D))"
"Excellent IDE for Python, better than most editors, competitive to the top commercial products."