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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 lockFile(self, fileName, byteOffset, length, dokanFileInfo):
 """Lock a file. :param fileName: name of file to lock :type fileName: ctypes.c_wchar_p :param byteOffset: location to start lock :type byteOffset: ctypes.c_longlong :param length: number of bytes to lock :type length: ctypes.c_longlong :param dokanFileInfo: used by Dokan :type dokanFileInfo: PDOKAN_FILE_INFO :return: error code :rtype: ctypes.c_int """

        return self.operations('lockFile', fileName, byteOffset, length)