I understand where you're coming from and I concede that you might be more efficient with your current setup, but I disagree about the debugger. Pdb, gdb and any other command-line based *db-s are what people first started using a few thousand years before entering the stone age. I've used gdb extensively and I can tell you there's no substitute for a good IDE where you can see the code, variable values, stacks, threads and watches, all at the same time; it makes life so much easier. It can be done in the old fashion way but there's nothing to gain from it.

On the other hand I haven't seen any good free Python IDE-s (like Visual C++ is for C++) and you are sometimes forced to use pdb for the lack of a better option (Python Tools for VS are decent but took me a lot of time to setup properly and I didn't like the workflow). That said, the lack of good tools doesn't mean the old ones are good, only that the language lacks good tools, mostly because people get used to the stone age tools. And sadly that is the case for a lot of programming languages.