使用pickle存储对象

使用pickle的dumps()方法可以将对象转换成字符串形式，随后用字节文本形式存储对象到文件

import pickle

class Bird(object):
    have_feather = True

summer = Bird()
pickle_string = pickle.dumps(summer)

with open("summer.pkl", "wb") as f:
    f.write(pickle_string)

也可以使用dump方法一步到位

import pickle

class Bird(object):
    have_feather = True

summer = Bird()
with open("summer.pkl", "w") as f:
    pickle.dump(summer, f)