[IPython-dev] Output of, e.g., type(a)
Robert Kern
robert.kern at gmail.com
Sat Oct 22 14:36:56 EDT 2011
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.
--
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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