TypeError: can't pickle HASH objects?

[est]

On Oct 2, 11:27 am, "Aaron \"Castironpi\" Brady"
<castiro... at gmail.com> wrote:
> On Oct 1, 2:50 pm, est <electronix... at gmail.com> wrote:
>
>
>
>
>
> > >>> import md5
> > >>> a=md5.md5()
> > >>> import pickle
> > >>> pickle.dumps(a)
>
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in <module>
> >   File "C:\Python25\lib\pickle.py", line 1366, in dumps
> >     Pickler(file, protocol).dump(obj)
> >   File "C:\Python25\lib\pickle.py", line 224, in dump
> >     self.save(obj)
> >   File "C:\Python25\lib\pickle.py", line 306, in save
> >     rv = reduce(self.proto)
> >   File "C:\Python25\lib\copy_reg.py", line 69, in _reduce_ex
> >     raise TypeError, "can't pickle %s objects" % base.__name__
> > TypeError: can't pickle HASH objects
>
> > Why can't I pickle a md5 object? Is it because md5 algorithm needs to
> > read 512-bits at a time?
>
> > I need to md5() some stream, pause(python.exe quits), and resume
> > later.  It seems that the md5 and hashlib in  std module could not be
> > serialized?
>
> > Do I have to implement md5 algorithm again for this special occasion?
>
> > Or is there anyway to assige a digest when creating md5 objects?
>
> Can you just pickle the stream, the part of it you've read so far?- Hide quoted text -
>
> - Show quoted text -

wow. It's giga-size file. I need stream reading it, md5 it. It may
break for a while.