Fix __str__ for EventFiniteNominal to quote the actual nominal values
Closed this issue · 3 comments
fsaad commented
X << ['a', 'b']
should render as
X << {'a', 'b'}
so as to distinguish between symbolic entities (x) and string entities ('a', 'b') in the language.
Similarly, for negation we have
~(X << ['a', 'b'])
should render as
X << UniversalSet() \ {'a', 'b'}
fsaad commented
I remember now that sympy.FiniteSet('0') will automatically convert the string '0' to an integer 0, so NominalValue(Atom) tricks sympy into thinking that '0' cannot be converted (by overriding its 'str' method).
fsaad commented
Sympy now plan to remove this horrible feature :)
sympy/sympy#18066