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我在交互模式下获取此输出。Python 2.7中的文件处理中的类
class test:
def p(self):
print 'PP'
>>> f=open('E:\Python\Roy Progs\Test','w')
>>> t=test()
>>> import pickle
>>> pickle.dump(t,f)
>>> f.close()
>>> f=open('E:\Python\Roy Progs\Test','r')
>>> pickle.load(f).p()
PP
>>> f.close()
>>>
=============================== RESTART: Shell ===============================
>>> f=open('E:\Python\Roy Progs\Test','r')
>>> import pickle
>>> pickle.load(f).p()
Traceback (most recent call last):
File "<pyshell#14>", line 1, in <module>
pickle.load(f).p()
File "E:\Python\lib\pickle.py", line 1384, in load
return Unpickler(file).load()
File "E:\Python\lib\pickle.py", line 864, in load
dispatch[key](self)
File "E:\Python\lib\pickle.py", line 1075, in load_inst
klass = self.find_class(module, name)
File "E:\Python\lib\pickle.py", line 1132, in find_class
klass = getattr(mod, name)
AttributeError: 'module' object has no attribute 'test'
从我意识到类(其对象被存储在文件中)的定义必须在那里在RAM在检索数据,并使用它的时候输出。然而,我不明白为什么这一定是这种情况,通过将对象存储在文件中,我不存储类定义吗?
请勿粘贴文字图像 - 粘贴文字本身。 –
谢谢你的建议,我希望现在可以。 –