On Tue, Apr 1, 2008 at 11:41 AM, Colin Gillespie <[EMAIL PROTECTED]> wrote:
>
> I've just found out that it's not 'E' that's causing the problem, it's
> 'S'.
>
> sympify('S') #works
> sympify('S*X') #doesn't work
That's because S is imported in the sympy module:
In [1]: S
Out[1]: S
In [2]: S?
Type: instance
Base Class: sympy.core.basic.SingletonFactory
String Form: S
Namespace: Interactive
Docstring:
A map between singleton classes and the corresponding instances.
E.g. S.Exp == C.Exp()
However, I think sympify shouldn't try to use imported modules imho. i.e:
In [1]: sympify("ab")
Out[1]: ab
In [2]: sympify("abc")
Out[2]: <module 'sympy.abc' from 'sympy/abc.pyc'>
I think [2] should also return a symbol("abc"). What do you think?
Ondrej
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