[Python-Dev] Fix import errors to have data

[Christian Tismer]

Greg Ewing wrote:

>>>Maybe it could be as simple as saving a snapshot of
>>>sys.modules whenever importing of a module is begun,
>>>and if execution of its body doesn't complete, restoring
>>>the snapshot?
>>
>>This is exactly what I thought of.
>>It seems to be correct, also with nested imports,
>>since this is a stack-like structure of undoable things.
> 
> 
> What happens in the presence of threads, though?

To my memory, imports in the presense of threads *always*
have been a nightmare. My advice always goues this way:
If you must have threads, make sure to import everything
through the main thread, before starting new ones.

If you then still have problems, well, I have a different
solution, which is also more efficient,...
... but this is another story. Off topic.

-- 
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