itertools.groupby

[Steve Howell]

--- Raymond Hettinger <python at rcn.com> wrote:

> > > That's not for everyone, so it isn't a loss if
> > > someone sticks
> > > with writing plain, clear everyday Python
> instead of
> > > an itertool.
> >
> > I know most of the module is fairly advanced, and
> that
> > average users can mostly avoid it, but this is a
> very
> > common-antipattern that groupby() solves:
> 
> I think the OP would have been better-off with plain
> vanilla Python such as:
> 
>    See
>
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/259173
> 

That recipe implements SQL-like Group By, but it's the
uniq-like reimplementation of groupby() that I think
is error prone.

The OP was writing code that wanted the uniq-like
semantics.




       
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