== doesn't mean SymPy equality, it means Python equality. Try Eq(X, 3)
instead.
On Tue, Jan 21, 2014 at 9:07 AM, F. B. <franz.bona...@gmail.com> wrote:
>
> Concerning bugs and stats, is the following another bug?
>
> In [4]: X = Binomial('X', 4, S.Half)
>
> In [7]: density(X).dict
> Out[7]: {0: 1/16, 1: 1/4, 2: 3/8, 3: 1/4, 4: 1/16}
>
> In [8]: P(X > 2)
> Out[8]: 5/16
>
> In [9]: P(X == 2)
> AttributeError: 'NoneType' object has no attribute 'probability'
>
> I would expect
>
> *P(X == 2) = 3/8.*Well, I don't know if this is related to the previous
> bug or if it's a missing feature, but I just updated the master branch and
> it is there.
>
> I also happens on continuous RV
>
> In [10]: X = Normal('X', 3, 4)
>
> In [11]: P(X == 3)
> AttributeError: 'NoneType' object has no attribute 'probability'
>
> On continuous RV this value should be zero, expect for possible continuous
> random variables involving distributions (correct me if I'm wrong).
>
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