how to modify code while debugging it without having to stop and then restart debugger

[python]

hello and thanks for reading this,

i have been a dos/windows user using some form of the basic language for 30 years now.
i own and run a small programming company and there is one feature that keeps me in the windows/basic world.

while i will agree that it has not evolved well, it does have one awesome feature that i have yet to see replicated in
any linux product that i know about so far.


i am a long time windows user and have had a great way to learn new api.
to write some code and then run it.
if there is an error, the debugger will load.
then i can figure out what the eror is, just touch up the ocde and continue to run the code.
i do not have to stop the code, modify the code, rerun  the code.
often an error will only happen after a complex set of conditions and not have to completely stop the app is a fantastic
way to debug.

there are several applications that can do this.
in fact, the free version of the visual studio 2005, which is free, have this ability.

so how can i use python to debug code and change that code without having to restart the code.

thanks so much,
dave