如何使用IDLE以外的东西以交互方式调试Python中的异常？

When I'm using IDLE to run a script, if the script encounters an exception and execution stops, then I'm left with a interactive shell, which I can use to investigate the application state at the time of the exception. This is really nice, but otherwise I find IDLE lacking as an editor. Is there a way I can get this "drop to interactive shell on exceptions" behavior without using IDLE?When I'm using IDLE to run a script, if the scr