Question

Is there a library method to copy all the properties between two (already present) instances of the same class, in Python?

I mean, something like Apache Commons’ PropertyUtilsBean.copyProperties()

Answer 1

If your class does not modify __getitem__ or __setitem__ for special attribute access all your attributes are stored in __dict__ so you can do:

 nobj.__dict__ = oobj.__dict__.copy()    # just a shallow copy 

If you use python properties you should look at inspect.getmembers() and filter out the ones you want to copy.