What is pickling and unpickling in python?
Pickling and unpickling are very important when we have to transfer Python objects from one machine to another and vice versa. In this article, we will explain pickling and unpickling in Python with examples.
In Python, pickling is the process by which Python objects are converted to byte streams. Pickling is about serializing the object structure in python.
# Pickling in Python import pickle # Python object my_list = [11, 'Python', b'Love Python'] # Pickling with open("data.pickle","wb") as file_handle: pickle.dump(my_list, file_handle, pickle.HIGHEST_PROTOCOL) print("Pickling completed!")
This program creates data.pickle file in the current directory. Go and check for it :)
Pickle module (imported using
import pickle) accepts any python objects and converts it into a string represesntation and dumps it into a file using a
dump() method, this process is known as pickling.
Unpickling is the process of retrieving original python objects from the stored string representation i.e from the pickle file. It is the process of converting a byte stream into the python object.
# Unpickling in Python import pickle # Pickling with open("data.pickle","rb") as file_handle: retrieved_data = pickle.load(file_handle) print(retrieved_data)
[11, 'Python', b'Love Python']
For more detail about pickling and unpickling, we encourage you to check Python documentation for Pickle