Jason Grout wrote:
> William Stein wrote:
>> On Jan 24, 2008 9:43 PM, Jason Grout <[EMAIL PROTECTED]> wrote:
>>> Following up on William's tip to look at the displayhook function, here
>>> is a function that will enable "pretty-printing" by default in the notebook:
>>>
>>> def pretty_print (object):
>>> if object is None:
>>> return
>>> import __builtin__
>>> __builtin__._=object
>>> try:
>>> print html("$"+latex(object)+"$")
>>> except:
>>> import sys
>>> sys.__displayhook__(object)
>>>
>>> def notebook_pretty(enable=True):
>>> import sys
>>> if enable:
>>> sys.displayhook = pretty_print
>>> else:
>>> sys.displayhook = sys.__displayhook__
>>>
>>> # To enable the pretty-printing
>>> notebook_pretty(True)
>>>
>>> Of course the function names could (and probably should) change. This
>>> function makes the notebook much, much more user-friendly to new users,
>>> I think. Where should this function be located? Also, should it be a
>>> switch at the top of the notebook, like the evaluation drop-down menu?
>>>
>>> One problem with the above is that graphics objects are not shown by
>>> default (try doing plot(sin(x),1,2) after the above code). Someone
>>> familiar with how graphic objects are shown by default now could
>>> probably trivially fix that problem, though (any takers?).
>>>
>> Sure. This is like yours but slightly nicer and deals with graphics
>> nicely (and also lists of graphics objects):
>>
>> def pretty_print (object):
>> if object is None:
>> return
>> if isinstance(object, (sage.plot.plot.Graphics,
>> sage.plot.plot3d.base.Graphics3d)):
>> print repr(object)
>> return
>> import __builtin__
>> __builtin__._=object
>> try:
>> print html("$$"+latex(object)+"$$")
>> except:
>> import sys
>> sys.__displayhook__(object)
>>
>> def notebook_pretty(enable=True):
>> import sys
>> if enable:
>> sys.displayhook = pretty_print
>> else:
>> sys.displayhook = sys.__displayhook__
>>
>> # To enable the pretty-printing
>> notebook_pretty(True)
>
> mhansen and mabshoff just pointed out on IRC that lprint() is the
> existing function that is almost exactly this. So I'm patching up
> lprint instead.
A patch is up at #1922. Could someone review it, please?
>
> Can we make a very visible checkbox or button in the notebook interface
> that toggles lprint? I think it would be one thing that new users would
> appreciate very, very much and also someone like me would appreciate
> very much too.
This is trac #1923
Jason
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