dill

In the answer to Python pickle: dealing with updated class definitions , the author of the dill package writes: "Ok, I have added this feature to dill in the latest revision on github. Implemented with far less trickery than I thought... just serialize the class definition with the pickle, and voila." Having installed dill and tinkered with it, it's not obvious to me how to actually use this functionality in dill . Could someone provide an explicit example? I would like to pickle the class instance and also serialize the class definition. (I am new to python and I this functionality seems

I would like to use the multiprocessing library in Python. Sadly multiprocessing uses pickle which doesn't support functions with closures, lambdas, or functions in __main__ . All three of these are important to me In [1]: import pickle In [2]: pickle.dumps(lambda x: x) PicklingError: Can't pickle <function <lambda> at 0x23c0e60>: it's not found as __main__.<lambda> Fortunately there is dill a more robust pickle. Apparently dill performs magic on import to make pickle work In [3]: import dill In [4]: pickle.dumps(lambda x: x) Out[4]: "cdill.dill\n_load_type\np0\n(S'FunctionType'\np1 ... This