New submission from void abuser :
So basically the bug that I found was about adding a number to a sub-list.
If you declare li1 as li1=[[0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]] in the code
below then the code is working as it should do.
Although if you create the list called li1 with the same
Void added the comment:
> FWIW, I think it will OK to just ignore extra fields that we can't
> interpret as according to the standard. The only one we currently
> care about is the "Zip64 extended information extra field". Also,
> other programs (including the Inf
