code: def scs2e(sc, sclkch):
      
      sc = ctypes.c_int(sc)
      sclkch = stypes.stringToCharP(sclkch)
      et = ctypes.c_double()
      libspice.scs2e_c(sc, sclkch, ctypes.byref(et))
      return et.value
docs: Convert a spacecraft clock string to ephemeris seconds past J2000 (ET).
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/scs2e_c.html
  
      :param sc: NAIF integer code for a spacecraft.
      :type sc: int
      :param sclkch: An SCLK string.
      :type sclkch: str
      :return: Ephemeris time, seconds past J2000.
      :rtype: float