Hi,
The example below shows that result of a marshaled data structure is
nothing but a string data = {2:'two', 3:'three'}
import marshal
bytes = marshal.dumps(d ata)
type(bytes)
<type 'str'> bytes
'{i\x02\x00\x00 \x00t\x03\x00\x 00\x00twoi\x03\ x00\x00\x00t\x0 5\x00\x00\x00th ree0'
Now, I need to store this data safely in my database as CLEAR TEXT, not
BLOB. It seems to me that it should work just fine since it is string
anyways. So, why does O'reilly's Python Cookbook is insisting in saving
it as a binary file and BLOB type?
Am I missing out something?
Thanks,
Mike
Jan 13 '06
21  2578 
Mike wrote: So this question was primarily theoretical, right?
Theoretical? not really Steve. I wanted to use django's wonderful db
framework to save a structure into my postgresql. Except there is no
direct BLOB support for it yet. There, I was trying to explore my
options with saving this structure in clear text.
Right, NOW I understand.
regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC www.holdenweb.com
PyCon TX 2006 www.python.org/pycon/
"Mike" <mi**********@h otmail.com> writes: Correct. I didn't quite see the issue as assembly vs. python, having
direct translation to programming hours.... I figured the day I
upgrade my python, I would write a python script to upgrade the
data. I take my word back.
Writing that script sounds potentially capable of consuming some
programming hours. If the marshal format changes, it might not be
easy to have the old and new marshal modules in the same Python
instance. You might need two separate interpreters (old and new), to
demarshal your objects in the old interpreter and communicate them
somehow to the new interpreter (e.g. through pickle and sockets) for
re-marshalling. Migrating a database is a big pain in the neck
already without such extra complication. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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