pickle

pickle.dumps(obj) -> bytes

Return the pickled representation of an object as a bytes object.

pickle.loads(b: bytes)

Return the unpickled object from a bytes object.

What can be pickled and unpickled?

The following types can be pickled:

• None, True, and False;
• integers, floating-point numbers;
• strings, bytes;
• tuples, lists, sets, and dictionaries containing only picklable objects;
• functions (user-defined) accessible from the top level of a module (using def, not lambda);
• classes accessible from the top level of a module;
• instances of such classes

Cyclic and shared references are preserved: list, dict and instances of python classes are memoized before their contents are written, so an object graph containing reference cycles round-trips correctly and object identity is retained. A cycle that passes only through a tuple or through a __reduce__ result is not supported.

The following magic methods are available:

• __getnewargs__
• __getstate__
• __setstate__
• __reduce__