0
我在交互模式下獲取此輸出。Python 2.7中的文件處理中的類
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'
從我意識到類(其對象被存儲在文件中)的定義必須在那裏在RAM在檢索數據,並使用它的時候輸出。然而,我不明白爲什麼這一定是這種情況,通過將對象存儲在文件中,我不存儲類定義嗎?
請勿粘貼文字圖像 - 粘貼文字本身。 –
謝謝你的建議,我希望現在可以。 –