<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def dskxv(pri, target, srflst, et, fixref, vtxarr, dirarr):
 """ Compute ray-surface intercepts for a set of rays, using data provided by multiple loaded DSK segments. https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/dskxv_c.html :param pri: Data prioritization flag. :type pri: bool :param target: Target body name. :type target: str :param srflst: Surface ID list. :type srflst: list of int :param et: Epoch, expressed as seconds past J2000 TDB. :type et: float :param fixref: Name of target body-fixed reference frame. :type fixref: str :param vtxarr: Array of vertices of rays. :type vtxarr: Nx3-Element Array of floats :param dirarr: Array of direction vectors of rays. :type dirarr: Nx3-Element Array of floats :return: Intercept point array and Found flag array. :rtype: tuple """

    pri    = ctypes.c_int(pri)
    target = stypes.stringToCharP(target)
    nsurf  = ctypes.c_int(len(srflst))
    srflst = stypes.toIntVector(srflst)
    et     = ctypes.c_double(et)
    fixref = stypes.stringToCharP(fixref)
    nray   = ctypes.c_int(len(vtxarr))
    vtxarr = stypes.toDoubleMatrix(vtxarr)
    dirarr = stypes.toDoubleMatrix(dirarr)
    xptarr = stypes.emptyDoubleMatrix(y=nray)
    fndarr = stypes.emptyIntVector(nray)
    libspice.dskxv_c(pri, target, nsurf, srflst, et, fixref, nray, vtxarr, dirarr, xptarr, fndarr)
    return stypes.cMatrixToNumpy(xptarr), stypes.cVectorToPython(fndarr)