python进阶--哪些python对象可以pickle序列化

What can be pickled and unpickled?

The following types can be pickled:
可以被序列化的类型有：

• None, True, and False

• integers, floating point numbers, complex numbers，整型、浮点型、复数

• strings, bytes, bytearrays，字符串、比特类型、比特数组

• tuples, lists, sets, and dictionaries containing only picklable objects，元组、列表、集合、字典，它们里面包含的内容也必须可以pickle

• functions defined at the top level of a module (using def, not lambda)

• built-in functions defined at the top level of a module

• 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 section Pickling Class Instances for details).