@spiceErrorCheck<EOL>def spklef(filename):
filename = stypes.stringToCharP(filename)<EOL>handle = ctypes.c_int()<EOL>libspice.spklef_c(filename, ctypes.byref(handle))<EOL>return handle.value<EOL>
Load an ephemeris file for use by the readers.  Return that file's
handle, to be used by other SPK routines to refer to the file.

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

:param filename: Name of the file to be loaded.
:type filename: str
:return: Loaded file's handle.
:rtype: int