Python笔记(十四)_永久存储pickle

pickle模块：将所有的Python对象转换成二进制文件存放

应用场景：编程时最好将大对象（列表、字典、集合等）用pickle写成永久数据包供程序调用，而不是直接写入程序

写入过程：将list转换为二进制写入my_pickle文件中

import pickle
list=[1,2,3]
pickle_file = open('my_pickle.pkl','wb')
pickle.dump(list,pickle_file)
pickle_file.close()

读出过程：将二进制文件my_pickle转换为list读出来

pickle_file = open('my_pickle.pkl','rb')
my_list = pickle.load(pickle_file)