On Jun 20, 11:42 am, "Ondrej Certik" <[EMAIL PROTECTED]> wrote:
> >> Also, let's get rid of set_repr_level()? This is quite an important
> >> change, so I'd like to hear opinions of others as well.
>
> > We already had this discussion in the past:
>
> >http://code.google.com/p/sympy/issues/detail?id=697
>
> > And I think repr(x) should be "Symbol('x')", str(x) should be "x" and
> > there should be no Basic.set_repr_level.
>
> Agree. So you mean this, right Kirill?
>
> >>> repr(x**2/2)
>
> Mul(Half(1, 2), Pow(Symbol('x'), Integer(2)))
There is a problem with this representation - it will
be implementation dependent (say, one will change
the Half to something else like Rational).
Another solution to the repr probelm is to return
sympify('x**2/2')
that will satisfy the basic assumption behind repr:
eval(repr(obj)) == obj
(assuming that the parser works correctly) and
is well readable.
Pearu
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