[IPython-User] Pretty print as default print function

Gökhan Sever gokhansever@gmail....
Thu Nov 15 21:28:11 CST 2012


Hi,

This works fine for a single array printing, but I want to be able to
execute a script and have arrays printed in this form.

I think, its best to wait for Python 3 adaption, or adapt my scripts to Py3
in order to achieve this with the least amount of extra coding :)

On Sat, Nov 10, 2012 at 1:42 AM, Aaron Meurer <asmeurer@gmail.com> wrote:

> Why not just use the regular IPython display hook, and not use print,
> i.e., just call the object like
>
> In [1]: findgen(5)
> Out[1]:      0.00000      1.00000      2.00000      3.00000      4.00000
>
> If you insist on using print, one option would be to just monkey-patch
> array.__str__.
>
> Aaron Meurer
>
>
>
> On Sat, Nov 10, 2012 at 1:34 AM, Carl Smith <carl.input@gmail.com> wrote:
>
>> Can you not redirect stdout to a method with something like...
>>
>> class StandardOut(object):
>>
>>     def __init__(self): pass
>>
>>     def write(self, string):
>>         do_stuff()
>>
>> I'm not sure if that'll work. Just thinking out loud really.
>>
>> On 10 November 2012 08:17, Thomas Kluyver <takowl@gmail.com> wrote:
>> > The only thing I can think of is to hack an ast transformation into
>> %run, to
>> > turn print statements into calls to a function you've defined.
>> >
>> > The good news is that a lot of scientific python packages now support
>> python
>> > 3.
>> >
>> > Thanks,
>> > Thomas
>> >
>> > On Nov 10, 2012 1:10 AM, "Gökhan Sever" <gokhansever@gmail.com> wrote:
>> >>
>> >> Thanks for the reply Thomas.
>> >>
>> >> I still use Python 2.7, along with all of the scientific Python stack.
>> >>
>> >> Do you think is there a simple way to modify IPython's "run" command so
>> >> that output's pretty printed just like IPython shell?
>> >>
>> >>
>> >> On Fri, Nov 9, 2012 at 2:28 AM, Thomas Kluyver <takowl@gmail.com>
>> wrote:
>> >>>
>> >>> In python 3, you can replace the builtin print function. I don't know
>> of
>> >>> any way to modify the behaviour of print statements in python 2.
>> >>>
>> >>> Thomas
>> >>>
>> >>> On Nov 9, 2012 6:59 AM, "Gökhan Sever" <gokhansever@gmail.com> wrote:
>> >>>>
>> >>>> Hello,
>> >>>>
>> >>>> I would like to be able print NumPy arrays matching the IDL's array
>> >>>> print outout. For instance:
>> >>>>
>> >>>> IDL> print, findgen(5)
>> >>>>       0.00000      1.00000      2.00000      3.00000      4.00000
>> >>>> IDL> print, dindgen(5)
>> >>>>        0.0000000       1.0000000       2.0000000       3.0000000
>> >>>> 4.0000000
>> >>>>        0.0000000       1.0000000       2.0000000       3.0000000
>> >>>> 4.0000000
>> >>>>
>> >>>>
>> >>>> I1 np.arange(5, dtype='float64')
>> >>>> O1        0.0000000       1.0000000       2.0000000       3.0000000
>> >>>> 4.0000000
>> >>>>
>> >>>> I2 np.arange(5, dtype='float32')
>> >>>> O2       0.00000      1.00000      2.00000      3.00000      4.00000
>> >>>>
>> >>>> Ignoring O1 and O2 lines, outputs (formatting) are matching. I
>> achieved
>> >>>> this by defining some custom pprint formatters in the IPy config
>> file.
>> >>>>
>> >>>> However, this is only valid within IPython while just typing array
>> >>>> names. For instance, running these lines revert the printing
>> settings back
>> >>>> to normal.
>> >>>>
>> >>>> Is there a way to make this type of customized printing default for
>> >>>> executing a file via Python? ie., can we replace python's print
>> statement
>> >>>> with pprint?
>> >>>>
>> >>>> If not, should I edit numpy/core/arrayprint.py and use a pythonrc
>> file
>> >>>> to achieve the effect?
>> >>>>
>> >>>> I am also interested in custom printing other data types than
>> nd.arrays.
>> >>>>
>> >>>> Thanks.
>> >>>>
>> >>>> --
>> >>>> Gökhan
>> >>>>
>> >>>> _______________________________________________
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>> >>>>
>> >>>
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>> >>
>> >>
>> >>
>> >> --
>> >> Gökhan
>> >>
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-- 
Gökhan
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