序列化python对象

pickle.dump

序列化至文件

import pickle

class A:
    def __init__(self, x, y):
        self.x = x
        self.y = y

a = A(2,3)
f = open('somefile','wb')
pickle.dump(a,f)

pickle.load

从文件反序列化

f = open('somefile','rb')
data = pickle.load(f)
print data.x, data.y      # 2 3

pickle.dumps

序列化至字符串

s = pickle.dumps(a)

pickle.loads

从字符串反序列化

obj = pickle.loads(s)
print obj.x, obj.y    # 2 3