En Fri, 09 Apr 2010 19:16:14 -0300, Jeremy <jlcon...@gmail.com> escribió:
On Apr 9, 4:02 pm, "Gabriel Genellina" <gagsl-...@yahoo.com.ar> wrote:
En Fri, 09 Apr 2010 18:04:59 -0300, Jeremy <jlcon...@gmail.com>
escribió:
> A related question: Can I parse the data once and keep it somewhere
> instead of reading the supporting file every time? I tried pickling
> but that wouldn't work because I have custom classes. (Either that or
> I just don't know how to pickle—this is a highly probable event.)
What kind of "custom classes"?
My custom classes are not very fancy. They basically are dictionaries
and lists organizing the data in the supporting file. I was actually
surprised they didn't pickle because the classes were so simple.
# pickle some_object
with open(filename, "wb") as f:
pickle.dump(some_object, f, -1)
When I did this I got the following error:
PicklingError: Can't pickle <class '__main__.element'>: it's not found
as __main__.element
Am I just being dumb?
No, but maybe you're redefining 'element':
py> from pickle import dumps
py> class Foo(object):
... pass
...
py> x = Foo()
py> class Foo(object):
... pass
...
py> dumps(x)
Traceback (most recent call last):
...
pickle.PicklingError: Can't pickle <class '__main__.Foo'>: it's not the
same obj
ect as __main__.Foo
Using reload() may lead to this error too. Basically, the class says: "I
am 'DonQuijote', from module 'LaMancha'". But nobody at LaMancha knows
DonQuijote, or they say DonQuijote is a different person.
--
Gabriel Genellina
--
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