KeyError in pickle

[christof]

Hi,

I am using pickle/unpickle to let my program save its documents to
disk. While this it worked stable for a long time, one of my users now
complained, that he had a file which can't be loaded.

The traceback is:

File "pickle.pyo", line 1374, in loads
File "pickle.pyo", line 858, in load
KeyError: 'A'


Does anybody know this problem. How this can happen and how can I
avoid it?

Thanks,
Christof

 

[Peter Otten]

I am using pickle/unpickle to let my program save its documents to
disk. While this it worked stable for a long time, one of my users now
complained, that he had a file which can't be loaded.

The traceback is:

File "pickle.pyo", line 1374, in loads
File "pickle.pyo", line 858, in load
KeyError: 'A'


Does anybody know this problem. How this can happen and how can I
avoid it?

Is this reproducible? How? If not I would guess that the file is corrupted.

Peter

 

[christof]

Is this reproducible? How? If not I would guess that the file is corrupted.

Peter

I found the problem: the user did a text export and gave the exported
file the wrong extension. So: the file was not valid python pickle. I
should add a type signature to fhe file format to avoid this.

Thanks anyway,
Christof