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) def __str__(self): return str(self.__dict__)
The class is saved as whatever the name of the class instance is. Please not that this works with all datatypes that Pickle supports.
myClass = someClass()
Will try to load a saved class called “myClass.txt” otherwise set some sample values and save the class. Feel free to use this code.
I would also like to give credit to StackOverflow – Getting an instance name inside class init which showed the cool little trick of how to getting the class instance name.
I hope I was able to show you how to save a class in python. Let me know if you have any questions or comments.
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