Python 序列化

1.如果没有使用模块，那么保存一个字典只能以字符串的形式保存到文件中去

info = {
    "alex":"124",
    "Tony":"456"
}
f = open("user_info.txt",'w')
f.write(str(info))

2.使用pickle模块来序列化数据

import pickle
info = {
    "alex":"124",
    "Tony":"456"
}
f = open("user_info.txt",'wb')
f.write(pickle.dumps(info))


import pickle
f = open('user_info.txt','rb')
data_from_atm = pickle.loads(f.read())
print (data_from_atm)

3.load/dump以及loads/dumps方法的区别

import pickle
info = {
    "alex":"124",
    "Tony":"456"
}
f = open("user_info.txt",'wb')
pickle.dump(info,f)


import pickle
f = open('user_info.txt','rb')
data_from_atm = pickle.load(f)
print (data_from_atm)

4.使用json模块

import json
info = {
    "alex":"124",
    "Tony":"456"
}
f = open("user_info.txt",'w')
f.write(json.dumps(info))


import json
f = open('user_info.txt','r')
data_from_atm = json.loads(f.read())
print (data_from_atm)