Comment #28 on issue 1778 by smichr: Rational from string can be improved
http://code.google.com/p/sympy/issues/detail?id=1778
Having not heard anything, I went ahead and did the following:
rework rsimplify et al: rsimplify is used to change a basic expression
into an expression where the numbers are all rationals; sympify is
the place where all strings are processed (and a q option allows
any reals to be replaced with rationals, so .3 will become 3/10);
the behavior of Rational is thus mostly unchanged.
Rational(.1) -> 0
S(.1) == S('.1') -> .1
rsimplify(.1) == S('.1', q=1) -> 1/10
Any feedback on what to call the "q" flag? I'm picking q because it is
short and
indicative of the "q" part that rationals contain (of the p, q properties).
If this is +1 I will pull the work out of 1766 et al in my 1766 branch and
we can get
this applied.
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