Am 06.09.2013 11:48, schrieb Sergey Kirpichev:
On Friday, September 6, 2013 12:52:44 PM UTC+4, Christophe Bal wrote:
It sounds like weird becaus when I type 1/2+3/7, sympy returns 13/14.
This means that sympy knows to workd with exact fractions, I know that
about sympy, but in asin(1/2), 1/2 is seen as a float. Stange ! Isn-t it ?
1/2 is not an exact fraction.
0.5f does happen to be the exact fraction for 1/2.
It's just that Sympy does not know that it is an exact, because it does
not see the symbols 1, /, and 2 (that's already evaluated by Python).
> Rational(1, 2) is.
Agreeding that Rational(1,2) would work as expected :-)
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