On Fri, Mar 13, 2015 at 5:34 PM, Neal Becker <ndbeck...@gmail.com> wrote: > > It is common that to guarantee good statistical independence between various > random generators, a singleton instance of an RNG is shared between them. > > So I typically have various random generator objects, which (sometimes > several levels objects deep) embed an instance of RandomState. > > Now I have a requirement to copy a generator object (without knowing exactly > what that generator object is).
Or rather, you want the generator object to *avoid* copies by returning itself when a copy is requested of it. > My solution is to use deepcopy on the top-level object. But I need to > overload __deepcopy__ on the singleton RandomState object. > > Unfortunately, RandomState doesn't allow customization of __deepcopy__ (or > anything else). And it has no __dict__. You can always subclass RandomState to override its __deepcopy__. -- Robert Kern
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