Do any debuggers support "edit and continue?"

[Joel Koltner]

Just curious... in Microsoft's Visual Studio (and I would presume some other 
tools), for many languages (both interpreted and compiled!) there's an "edit 
and conitnue" option that, when you hit a breakpoint, allows you to modify a 
line of code before it's actually executed.

Does any Python debugger support this feature?  Being an interpreted language 
it doesn't seem like it would necessarily be too onerous to support?  It'd be 
quite handy in that, especially if you hit a breakpoint due to the interpreter 
throwing an error, you could fix just the line in question and keep going, 
rather than having to stop the entire program, fix the line, and then run 
again and potentially kill a bunch of time getting the program back into the 
same "state."

Thanks,
---Joel Koltner