Re: What the Pythons docs means by "container" ?

in duck-typing, any objects can acts as Container. but only difference is type that we need to consider as a Container or not. -- https://mail.python.org/mailman/listinfo/python-list

Re: pickle error by multiprocessing

I guess, The issue is not caused by multiprocessing. make sure you are pickling right object that can be pickable or not. Best way is run it in a console and test at which object the pickling error is occurring and then try to change the object which could be pickable. -- https://mail.python.or