Open DonSheddow opened 2 years ago
Thanks, that is a documentation error. The underlying sympy call would need to be
ex.subs([(x, 1), (y, PI)])
(the tuples are in some container and not just part of the variadic arguments. The subs(ex, ...)
is a julia interface which makes this a bit more natural (in my opinion).
should return
1 + pi + z
, but it returnsx + y + z
. Similarly,ex.subs((x, 1))
throws an error.If you write
subs(ex, (x, 1), (y, pi))
instead, it works as expected. I think the method call doesn't dispatch to the correct implementation, so the only method call that works isex.subs(var, replacement)
, but I'm not that familiar with Julia, so I'm not sure.If it's not possible to fix this, the documentation at https://docs.juliahub.com/SymPy/KzewI/1.1.4/introduction/#Substitution-1 should be changed to use the
subs(ex, (x, 1), (y, pi))
style instead, and maybe add a note that the method-call syntax doesn't work with tuples.Thanks for working on this library, it's awesome! :)