On Mar 17, 8:38 pm, G B <g.c.b.at.w...@gmail.com> wrote:

> atan2(-pi,0) -->  RuntimeError: power::eval(): division by zero
>
> Any ideas how to get around this?

A simple workaround is

sage: from sympy import atan2
sage: atan2(-pi,0)

-pi/2

Alec Mihaiovs

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