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Python的pickle模块
Python 提供了一个叫作 Pickle 的标准模块,通过它你可以将任何纯 Python 对象存储到一个文件中,并在稍后将其取回。这叫作持久地(Persistently)存储对象。
代码
python
'''
在Pickle模块中有2个常用的函数方法,一个叫做dump(),另一个叫做load()。
pickle.dump(对象, 文件,[使用协议])
load()方法的作用正好与上面的dump()方法相反,上面是序列化数据,
这个方法作用是反序列化。
pickle.load(文件)
目的主要是为了将一些数据,如字符串、列表、字典等长期的以文件形式保存下来
'''
import pickle
# The name of the file where we will store the object
shoplistfile = 'shoplist.data'
# The list of things to buy
shoplist = ['apple', 'mango', 'carrot']
# Write to the file
f = open(shoplistfile, 'wb')
# Dump the object to a file
pickle.dump(shoplist, f)
f.close()
# Destroy the shoplist variable
del shoplist
# Read back from the storage
f = open(shoplistfile, 'rb')
# Load the object from the file
storedlist = pickle.load(f)
print(storedlist)
运行结果
bash
['apple', 'mango', 'carrot']