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Groups > comp.lang.python > #6835

Re: Unshelving the data?

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In article <4433955b-7f54-400a-af08-1f58a75e734c@j31g2000yqe.googlegroups.com>
Uncle Ben  <bgreen@nycap.rr.com> wrote:
>Shelving is a wonderfully simple way to get keyed access to a store of
>items. I'd like to maintain this cache though.
>
>Is there any way to remove a shelved key once it is hashed into the
>system?

$ pydoc shelve
...
    To summarize the interface (key is a string, data is an arbitrary
    object):
    ...
            d[key] = data   # store data at key (overwrites old data if
                            # using an existing key)
            data = d[key]   # retrieve a COPY of the data at key (raise
                            # KeyError if no such key) -- NOTE that this
                            # access returns a *copy* of the entry!
            del d[key]      # delete data stored at key (raises KeyError
                            # if no such key)
    ...

Seems pretty straightforward. :-)  Are you having some sort
of problem with "del"?
-- 
In-Real-Life: Chris Torek, Wind River Systems
Salt Lake City, UT, USA (40°39.22'N, 111°50.29'W)  +1 801 277 2603
email: gmail (figure it out)      http://web.torek.net/torek/index.html

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Thread

Unshelving the data? Uncle Ben <bgreen@nycap.rr.com> - 2011-06-01 19:49 -0700
  Re: Unshelving the data? Chris Torek <nospam@torek.net> - 2011-06-02 03:24 +0000
  Re: Unshelving the data? Ben Finney <ben+python@benfinney.id.au> - 2011-06-02 13:25 +1000
  Re: Unshelving the data? Adam Tauno Williams <awilliam@whitemice.org> - 2011-06-02 06:46 -0400
    Re: Unshelving the data? Uncle Ben <bgreen@nycap.rr.com> - 2011-06-02 06:17 -0700

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