[Numpy-discussion] column_stack with mixed data types

Sebastian Haase haase@msg.ucsf....
Tue Jul 31 02:26:05 CDT 2007


On 7/31/07, Robert Kern <robert.kern@gmail.com> wrote:
> Ryan Krauss wrote:
> > I just tend to think in terms of lists rather than tuples.  Why is a
> > tuple a more reasonable choice than a list?  (I'm really asking and
> > not being argumentative, since you can't hear my tone.)
>
> The key thing is that the type of the container of records is different from the
> type of the record, so you'd either have to have a list of tuples (or a list of
> lists of ... tuples) or a tuple of lists. There is a tendency to use lists for
> homogeneous collections and tuples for inhomogeneous collections; Guido says
> that this is the main difference in how he uses tuples and lists. When you get
> an answer to a DB-API2 SQL query, you get a list of (usually augmented) tuples.
>
This is the best explanation I have heard about this  yet.
Where does he say this ? Just for reference ....
Thanks,
Sebastian


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