def vdist(v1, v2):
    """
    Return the distance between two three-dimensional vectors.

    http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vdist_c.html

    :param v1: First vector in the dot product. 
    :type v1: 3-Element Array of floats
    :param v2: Second vector in the dot product. 
    :type v2: 3-Element Array of floats
    :return: the distance between v1 and v2
    :rtype: float
    """
    v1 = stypes.toDoubleVector(v1)
    v2 = stypes.toDoubleVector(v2)
    return libspice.vdist_c(v1, v2)
def vdist ( v1 , v2 ) : v1 = stypes . toDoubleVector ( v1 ) v2 = stypes . toDoubleVector ( v2 ) return libspice . vdist_c ( v1 , v2 )
Return the distance between two three-dimensional vectors.

    http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vdist_c.html

    :param v1: First vector in the dot product. 
    :type v1: 3-Element Array of floats
    :param v2: Second vector in the dot product. 
    :type v2: 3-Element Array of floats
    :return: the distance between v1 and v2
    :rtype: float