python activities startup

[Benjamin M. Schwartz]

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Tomeu Vizoso wrote:
> If I understand correctly how that fork() would work, what we would be
> saving in that case is the reading of modules, but the python code at
> the module scope would need to be executed anyway.

I am no expert, but, without evidence, my current suspicion is the other way.
Consider:

import dbus
import os

def launch_activity(some_activity)
    if os.fork()  == 0:
        import some_activity
        x = some_activity.SomeActivity()
    else:
        return

- From the perspective of the child process, the modules have already been
imported, and are even still in scope.  It would be strange for the Python
semantics if the imports were somehow "forgotten" in the child.
- --Ben
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