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.
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.
Jason
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