'reload M' doesn't update 'from M inport *'

[Frederic Rentsch]

I develop in an IDLE window.

Module M says 'from service import *'.
Next I correct a mistake in function 'service.f'.
Now 'service.f' works fine.

I do 'reload (service); reload (M)'.
The function 'M.f' still misbehaves.

'print inspect.getsource (service.f)' and
'print inspect.getsource (M.f)' shows the same 
corrected code. 

'print service.f' and 'print M.f' show different ids.

So I do 'del M; reload (M)'. Nothing changes.

I delete M again and run gc.collect () to really 
clean house. I reload M again and still nothing changes.
The id of the reloaded function 'M.f' is still the 
same as it was before the purge and so M.f still isn't 
fixed.  

I know I have more radical options, such as starting 
a new IDLE window. That would save me time, but 
I'd like to take the opportunity to understand what
is happening. Surely someone out there knows.

Frederic