[IPython-dev] History in ipython1

Brian Granger ellisonbg.net@gmail....
Tue Jul 22 11:00:32 CDT 2008


Also, I think the history of history is important:

In [1]: a = 10

In [2]: b = 20

In [3]: history
1: a = 10
2: b = 20
3: _ip.magic("history ")

Any departure from this will probably confuse developers and users.

Brian

On Tue, Jul 22, 2008 at 8:36 AM, Barry Wark <barrywark@gmail.com> wrote:
> On Mon, Jul 21, 2008 at 10:47 PM, Gael Varoquaux
> <gael.varoquaux@normalesup.org> wrote:
>> On Mon, Jul 21, 2008 at 06:32:30PM +0300, Ville M. Vainio wrote:
>>> On Mon, Jul 21, 2008 at 7:00 AM, Gael Varoquaux
>>> <gael.varoquaux@normalesup.org> wrote:
>>
>>> > number of past executions. Of course, we can always fallback on our feet
>>> > by checking the length of the history, and resetting the cursor to that,
>>> > but it seems simpler to count from the back. How to people feel about
>>> > that?
>>
>>> It would seem simpler to have 0 as the first element, mostly to ensure
>>> that item number 3 will always be the same item (i.e. stable
>>> numbering).
>>
>> Hum, as you load a history, you prepend things to the beginning of the
>> list, so item number 3 will stop being item number 3. I think of history
>> as "item 3 lines ago".
>
> It seems this is a frontend-specific issue. A notebook interface would
> want to think of history counting forwards in time from 0 whereas a
> terminal interface might want to think of history going backwards in
> time from 0.
>
>>
>> Gaël
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