Python notes (xiv) _ permanent storage pickle

pickle module: convert all Python objects into a binary file storage

Scenario: programming, preferably large objects (list, dictionaries, collections, etc.) written in the permanent pickle packet for program calls, instead of writing the program directly

 

Writing process: the list is converted to a binary file written my_pickle

import pickle

list=[1,2,3]

pickle_file = open('my_pickle.pkl','wb')

pickle.dump(list,pickle_file)

pickle_file.close()

 

Read-out process: the binary file my_pickle converted to read out the list

pickle_file = open('my_pickle.pkl','rb')

my_list = pickle.load(pickle_file)