parser.add_argument('-c', '--comparison_file_path', help='output file containing statistical comparisons')
parser.add_argument('-E', '--ensembl_output_path', help='output file containing flat (1-to-many) ensemble ortho pairs')
parser.add_argument('-I', '--inparanoid_output_path', help='output file containing flat (1-to-many) inparanoid ortho pairs')
+parser.add_argument('-g', '--generate_reactome_files', help='produce ortho_pair files required by Reactome projection inference script', action="store_true")
args = parser.parse_args()
#print args