unload imported DLL possible?

[Yakov Markovitch]

Robert Kiendl wrote:
> 
> I'am often importing C++-writen DLL's.
> 
> Often debug-changes in the DLL are necessary, while it would be
> desireable to have the python-machine standing with lots of fingered
> woodpile in it.
> 
> One possibilty is to work with numbered DLLs ... consecutively importing
> them and have them appearing under a constant alias.
> 
> But many times I asked me, if python supports unloading a DLL if no more
> references to the DLLs funcs are present?
> 
> -robert

Unfortunately, Python's import mechanism simply doesn't support
extension unloading. I.e. extension module once loaded will never be
unloaded until program's end, though, of course, its dictionary
eventually will be cleared (during interpreter's finalisation).

Yakov Markovitch
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