通过Pickle保存和加载数据

pickle_tutorial.py

import pickle
# save object to pickle
file = open('data.pickle', 'wb') # `b` abbr of binary
pickle.dump({'key':'value'}, file)
file.close()

# load object from pickle
file = open('data.pickle', 'rb')
dict = pickle.load(file)
file.close()
print(dict)
# output is {'key':'value'}

打开文件的时候使用with open() as f:可以不用关心文件的关闭