def showHelp():
    print\
    '''
    This program updates MAF by adding a column of uniprot id list

    Usage: %s
            Parameter         Description
            -gene2refseq      gene id to refseq id mapping file
            -refseq2uniprot   refseq id to uniprot id mapping file
            -output           Output file

            (eg. %s -gene2refseq <<absolute gene2refseq file path>>  -refseq2uniprot <<absolute refseq2uniprot mapping file path>> \
                    -output <<absolute output file path>> )

    ''' % (sys.argv[0], sys.argv[0])