what does pickle do in python смотреть онлайн

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title: a comprehensive guide to pickle in python
python's pickle module provides a convenient way to serialize and deserialize python objects. serialization is the process of converting a python object into a byte stream, and deserialization is the reverse process of reconstructing the original object from the byte stream. pickle allows you to save complex data structures like lists, dictionaries, and custom objects to a file, making it easy to store and retrieve them.
the pickle.dump() function is used to serialize python objects and write them to a file.
in this example, the data_to_pickle dictionary is serialized and saved to a file named 'data.pkl' in binary write mode ('wb').
to deserialize and load the data back into a python object, you can use the pickle.load() function.
this code reads the 'data.pkl' file in binary read mode ('rb') and loads the serialized data back into the loaded_data variable.
pickle can handle custom objects by implementing the __reduce__ method. this method should return a tuple of functions that represent how to recreate the object.
in this example, the custom person class implements the __reduce__ method to specify how to recreate the object during deserialization.
the pickle module in python is a powerful tool for serializing and deserializing objects, allowing you to save and load complex data structures easily. while it's a convenient solution for many use cases, keep in mind that pickle files may not be secure against arbitrary code execution from untrusted sources. always use caution when loading pickle files from untrusted or unauthenticated sources.
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