On Oct 5, 9:46 pm, Scott <spectre...@gmail.com> wrote:
> On Oct 4, 5:48 pm, Ondrej Certik <ond...@certik.cz> wrote:
>
> > >    return Add(term for term in expr.as_Add() if term.as_coeff_terms()

Add wants items, not a generator:

    return Add(*[term for term in expr.as_Add() if
term.as_coeff_terms()[0] >= tol])

To summarize:

    use Add(a,b,c) or Add(*[a,b,c]) or Add(*[x for x in iter]) but not
Add(x for x in iter)

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