turning, as output by ODRPACK (cf. ODRPACK UG p. 38).
    stopreason : list of str, optional
        `info` interpreted into English.

    Notes
    -----
    Takes one argument for initialization, the return value from the
    function `~scipy.odr.odr`. The attributes listed as "optional" above are
    only present if `~scipy.odr.odr` was run with ``full_output=1``.

    c