ap.add_argument('-i','--input_file',required=True,type=str,help="Input alignment in FASTA format.\n") ap.add_argument('-o','--output_file_prefix',required=True,type ...
ap.add_argument('-i', '--input_file', required = True, type = str, help = 'Input alignment in FASTA format.\n') ap.add_argument('-o', '--output_file', required = True ...