improve your python code(13)__python

1. 序列化操作 1.1 理解模組pickle/cPickle的優劣

import cPickle as picklemy_data = {'name':'python','type':'language'}with open('pickle.dat','wb') as fp:    pickle.dump(my_data,fp)"""pickle.dump(obj,file[,protocol]protocol:0表示ascii協議；1,2為新老二進位協議"""with open('pickle.dat','rb') as fp:    print(pickle.load(fp))

優點：……
缺點：
1. pickle不能保證操作的原子性
2. 存在安全問題：pickle.loads("cos\nsystem\n(Sdir'\ntR)")
3. pickle協議是python特定的，不同語言之間相容性難以保證 1.2 序列化的更好的選擇:json