asmatrix and asarray exception

Keith Goodman kwgoodman at
Wed Oct 11 11:06:32 CDT 2006

On 10/11/06, Keith Goodman <kwgoodman at> wrote:
> This works:
> >> M.asmatrix(['a', 'b', None])
> matrix([[a, b, None]], dtype=object)
> But this doesn't:
> >> M.asmatrix(['a', 'b', None, 'c'])
> TypeError: expected a readable buffer object
> >> M.__version__
> '1.0rc1'
> It also doesn't work for asarray and for tuples.

Here's a workaround:

>> M.asmatrix(['a', 'b', None, 'c'], dtype=object)
matrix([[a, b, None, c]], dtype=object)

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