== 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). > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.