Syntax

• pickle.dump(object,file,protocol) : serialize an object
• pickle.load(file) : de-serialize an object
• pickle.dumps(object, protocol) : serialize an object to bytes
• pickle.loads(buffer) : de-serialize an object from bytes

Parameters

• object : the object which is to be stored |
• file : the open file which will contain the object
• protocol : the protocol used for pickling the object (optional parameter)
• buffer : a bytes object that contains a serialized object|

Pickleable types

The following objects are picklable.

• None, True, and False
• numbers (of all types)
• strings (of all types)
• tuples, lists, sets, and dicts containing only picklable objects
• functions defined at the top level of a module
• built-in functions
• classes that are defined at the top level of a module
• instances of such classes whose __dict__ or the result of calling __getstate__() is picklable (see the official docs for details).

Based on the official Python documentation.

Pickle and security

The pickle module is not secure. It should not be used when receiving the serialized data from an untrusted party, such as over the Internet.

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