any() and all() shorthand

castironpi at castironpi at
Mon Jan 7 20:45:28 CET 2008

On Jan 7, 1:29 pm, "Guilherme Polo" <ggp... at> wrote:
> 2008/1/7, castiro... at <castiro... at>:
> > > You are too late, any and all are built-in into python 2.5
> > Hi, excellent.  Now how about something more generic, possibly:
> > [ x.y() for x or _next_ in c ]
> > where the context of _next_ is limited in complexity, and/or can only
> > occur in a generator?
> Would you care to explain what that syntax supposedly means ? By
> _next_ you mean something like the next method in generators ? _next_
> executes if x is false ? so whatever _next_ returns is named as x, so
> you can call x.y() ? I really didn't get your new syntax inside that
> list comprehension, neither its uses.

The idea is a shorthand for reduce.  Here, _next_ meant the next item
in the iterable c.

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