如何在python中完整保存/读取类

how to save/read class wholly in Python

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som = SOM_CLASS() # includes many big difficult data structures
som.hard_work()
som.save_to_disk(filename)
#then later or another program
som = SOM_CLASS()
som.read_from_file(filename)
som.do_anythink_else()

或

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som = SOM_CLASS()
save(som)
#...
load(som)
som.work()

最简单的方法是什么？

相关讨论

看看python的pickle库。

我使用此代码：

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import cPickle
import traceback

class someClass():
def __init__(self):
#set name from variable name. http://stackoverflow.com/questions/1690400/getting-an-instance-name-inside-class-init
(filename,line_number,function_name,text)=traceback.extract_stack()[-2]
def_name = text[:text.find('=')].strip()
self.name = def_name

try:
self.load()
except:
##############
#to demonstrate
self.someAttribute = 'bla'
self.someAttribute2 = ['more']
##############

self.save()

def save(self):
"""save class as self.name.txt"""
file = open(self.name+'.txt','w')
file.write(cPickle.dumps(self.__dict__))
file.close()

def load(self):
"""try load self.name.txt"""
file = open(self.name+'.txt','r')
dataPickle = file.read()
file.close()

self.__dict__ = cPickle.loads(dataPickle)

此代码保存类并从其实际的类实例名称加载该类。代码来自我的博客http://www.schurpf.com/python-save-a-class/。