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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 set_representative_structure(self, seq_outdir=None, struct_outdir=None, pdb_file_type=None, engine='needle', always_use_homology=False, rez_cutoff=0.0, seq_ident_cutoff=0.5, allow_missing_on_termini=0.2, allow_mutants=True, allow_deletions=False, allow_insertions=False, allow_unresolved=True, skip_large_structures=False, clean=True, force_rerun=False):
 """Set all representative structure for proteins from a structure in the structures attribute. Each gene can have a combination of the following, which will be analyzed to set a representative structure. * Homology model(s) * Ranked PDBs * BLASTed PDBs If the ``always_use_homology`` flag is true, homology models are always set as representative when they exist. If there are multiple homology models, we rank by the percent sequence coverage. Args: seq_outdir (str):
 Path to output directory of sequence alignment files, must be set if GEM-PRO directories were not created initially struct_outdir (str):
 Path to output directory of structure files, must be set if GEM-PRO directories were not created initially pdb_file_type (str):
 ``pdb``, ``mmCif``, ``xml``, ``mmtf`` - file type for files downloaded from the PDB engine (str):
 ``biopython`` or ``needle`` - which pairwise alignment program to use. ``needle`` is the standard EMBOSS tool to run pairwise alignments. ``biopython`` is Biopython's implementation of needle. Results can differ! always_use_homology (bool):
 If homology models should always be set as the representative structure rez_cutoff (float):
 Resolution cutoff, in Angstroms (only if experimental structure) seq_ident_cutoff (float):
 Percent sequence identity cutoff, in decimal form allow_missing_on_termini (float):
 Percentage of the total length of the reference sequence which will be ignored when checking for modifications. Example: if 0.1, and reference sequence is 100 AA, then only residues 5 to 95 will be checked for modifications. allow_mutants (bool):
 If mutations should be allowed or checked for allow_deletions (bool):
 If deletions should be allowed or checked for allow_insertions (bool):
 If insertions should be allowed or checked for allow_unresolved (bool):
 If unresolved residues should be allowed or checked for skip_large_structures (bool):
 Default False -- currently, large structures can't be saved as a PDB file even if you just want to save a single chain, so Biopython will throw an error when trying to do so. As an alternative, if a large structure is selected as representative, the pipeline will currently point to it and not clean it. If you don't want this to happen, set this to true. clean (bool):
 If structures should be cleaned force_rerun (bool):
 If sequence to structure alignment should be rerun Todo: - Remedy large structure representative setting """

        for g in tqdm(self.genes):
            repstruct = g.protein.set_representative_structure(seq_outdir=seq_outdir,
                                                               struct_outdir=struct_outdir,
                                                               pdb_file_type=pdb_file_type,
                                                               engine=engine,
                                                               rez_cutoff=rez_cutoff,
                                                               seq_ident_cutoff=seq_ident_cutoff,
                                                               always_use_homology=always_use_homology,
                                                               allow_missing_on_termini=allow_missing_on_termini,
                                                               allow_mutants=allow_mutants,
                                                               allow_deletions=allow_deletions,
                                                               allow_insertions=allow_insertions,
                                                               allow_unresolved=allow_unresolved,
                                                               skip_large_structures=skip_large_structures,
                                                               clean=clean,
                                                               force_rerun=force_rerun)

        log.info('{}/{}: number of genes with a representative structure'.format(len(self.genes_with_a_representative_structure),
                                                                                 len(self.genes)))
        log.info('See the "df_representative_structures" attribute for a summary dataframe.')