[IPython-dev] Output of, e.g., type(a)
Warren Weckesser
warren.weckesser at enthought.com
Sat Oct 22 15:20:40 EDT 2011
On Sat, Oct 22, 2011 at 1:36 PM, Robert Kern <robert.kern at gmail.com> wrote:
> On 10/22/11 6:58 PM, Warren Weckesser wrote:
> >
> >
> > On Sat, Oct 22, 2011 at 12:49 PM, Warren Weckesser
> > <warren.weckesser at enthought.com <mailto:warren.weckesser at enthought.com>>
> wrote:
> >
> > Hi all,
> >
> > ipython is doing some magic with the output of 'type(a)' (using
> 0.11.rc1 in
> > EPD):
> >
> > In [1]: a = 1
> >
> > In [2]: type(a)
> > Out[2]: int
> >
> > In [3]: str(type(a))
> > Out[3]: "<type 'int'>"
> >
> > In [4]: repr(type(a))
> > Out[4]: "<type 'int'>"
> >
> > The output in line 2 is nicer, but it makes it appear that the
> builtin
> > 'type' behaves in a way that it does not. My attempts (possibly too
> brief)
> > to find documentation or discussion of this feature have not been
> fruitful.
> > Can anyone point me to the relevant docs, or mailing list
> discussions? Thanks.
> >
> >
> >
> > Of course, three minutes after sending that email, I find the '%pprint'
> command
> > for toggling pretty-printing. That's enough to answer my question.
>
> The default pretty-printers are defined starting here:
>
>
> https://github.com/ipython/ipython/blob/master/IPython/lib/pretty.py#L463
>
> These were the defaults for the upstream, third-party pretty.py (with a
> just a
> bug-fix for the re objects, IIRC). I happen to like this one, but if there
> is a
> consensus that it is more confusing than pretty, I'm happy to consider
> changing it.
>
It's fine by me, now that I know it is just one of the pretty-printing
hooks.
Warren
> --
> Robert Kern
>
> "I have come to believe that the whole world is an enigma, a harmless
> enigma
> that is made terrible by our own mad attempt to interpret it as though it
> had
> an underlying truth."
> -- Umberto Eco
>
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>
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