There is a sympy atoms method. If x and y are symbols, then:

> a = x*y

> print a.atoms(sympy.Symbol)

set([x, y])

I suspect that this would work with the units defined in yt. There is probably a way to get powers too.

On Tue, Sep 30, 2014 at 10:38 AM, John ZuHone <jzuhone@gmail.com> wrote:

This should be obvious to me, but I can't seem to figure it out.

Is there a way to take a compound units expression like:

dyne*cm**2/g**2

and split it into its constituent parts, so that I have a list like this:

[dyne, cm, g]

and maybe even containing the information about the powers?
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Michael Zingale

Associate Professor

Dept. of Physics & Astronomy • Stony Brook University • Stony Brook, NY 11794-3800

phone: 631-632-8225

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