ness01/sympy — comment on commit 28de3b6004ad93270dd6f3c38039060c76a1ea49
File:  line 0
By asmeurer:

Since series doesn't seem to play well with essential singularities (like with exp(1/z)), can we generalize the workaround I suggested in the issue:
`exp(1/z).subs(z, 1/z).series(z, 0, 6).removeO().subs(z, 1/z)` (I guess if we can make that work, we should implement it in the series code, not here, though)?