#7682: Customize printing of real numbers
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Reporter: jason | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.3
Component: basic arithmetic | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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From http://groups.google.com/group/sage-
support/browse_thread/thread/06756df51d828bf4
{{{
we probably ought to make this easier to just print the
first n digits after the decimal by default for RR numbers, or to not
print out the trailing zeros. I can't imagine telling my students, for
example, that they need to do '%.3f'%num every time they come across a
number, especially since they just want to display the equation, not
format it as a string.
What do people think about this interface?
sage: RR.print_digits=3
sage: 3.09384
3.094
sage: RR.print_trailing_zeros=False
sage: RR.print_digits=None
sage: 3.09384
3.09384
Make it something like the RR.scientific_notation flag that is currently
in use.
}}}
Additionally, and more flexibly, we could just have something like:
{{{
sage: RR.set_print_format('%.3f')
sage: RR(pi)
3.142
}}}
or more pythonically
{{{
sage: RR.print_format = '%.3f'
sage: RR(pi)
3.142
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7682>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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