Command-line interface to print specified GO Terms from the DAG source .

def cli(self, prt=sys.stdout):
        """Command-line interface to print specified GO Terms from the DAG source ."""
        kws = self.objdoc.get_docargs(prt=None)
        if os.path.exists(kws['i']):
            obj = NCBIgeneFileReader(kws['i'])
            nts = obj.get_nts()
            if nts:
                geneid2nt = self._get_geneid2nt(nts)
                self._wrpy_ncbi_gene_nts(kws['o'], geneid2nt, prt)
        else:
            raise RuntimeError("\n{DOC}\n**ERROR: NO FILE FOUND: {NCBI}".format(
                NCBI=kws['i'], DOC=__doc__))