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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ckopn(filename, ifname, ncomch):
 """ Open a new CK file, returning the handle of the opened file. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/ckopn_c.html :param filename: The name of the CK file to be opened. :type filename: str :param ifname: The internal filename for the CK. :type ifname: str :param ncomch: The number of characters to reserve for comments. :type ncomch: int :return: The handle of the opened CK file. :rtype: int """

    filename = stypes.stringToCharP(filename)
    ifname = stypes.stringToCharP(ifname)
    ncomch = ctypes.c_int(ncomch)
    handle = ctypes.c_int()
    libspice.ckopn_c(filename, ifname, ncomch, ctypes.byref(handle))
    return handle.value