Determine which Object Space to use. The Standard Object Space gives the
normal Python semantics, the others are Object Space Proxies giving
additional features (except the Flow Object Space which is not intended
for normal usage):
- thunk: The thunk object space adds lazy evaluation to PyPy.
- logic: The logic object space contains logical programming features.
- taint: The taint object space adds soft security features.
- dump: Using this object spaces results in the dumpimp of all operations
to a log.