Re: [Numpy-discussion] addition, multiplication of a polynomial and np.{float, int}

On Tue, Mar 6, 2012 at 2:03 PM, Denis Laxalde <denis.laxalde@mcgill.ca>wrote:

Hi,

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np.__version__ '1.7.0.dev-7c07089' p = np.poly1d([1,1]) p + 1.0 poly1d([ 1., 2.]) p + np.float64(1) poly1d([ 1., 2.]) np.float64(1.0) + p array([ 2., 2.]) np.int64(1) + p array([2, 2]) np.int(1) + p poly1d([1, 2]) np.int64(1)*p array([1, 1])

What's happening here? I'd expect operations with polynomials would return a polynomial.

Use polynomial.Polynomial and you won't have this problem. Chuck