pickle模块 collections模块在面向对象中的应用

import pickle
class Course:
    def __init__(self,name,price,period):
        self.name = name
        self.price = price
        self.period = period

python = Course(‘python‘,20000,‘6 months‘)
linux = Course(‘linux‘,15800,‘5 months‘)
import pickle
with open(‘pickle_file‘,‘ab‘) as f:
    pickle.dump(python,f)
    pickle.dump(linux,f)

import pickle
with open(‘pickle_file‘,‘rb‘) as f:
    obj1 = pickle.load(f)
    obj2 = pickle.load(f)
    while True:
        try:
            obj = pickle.load(f)
            print(obj.__dict__)
        except EOFError:
            break

from collections import namedtuple

Course = namedtuple(‘Course‘,[‘name‘,‘price‘,‘period‘])
python = Course(‘python‘,20000,‘6 month‘)
print(python.name)
print(python.price)
print(python.period)
print(type(python))