human
Solve the following python programming problem given the following code:
def bundle_list(catalog, bundle_name, version_ish, print_sha = False, flavor_name = None) : 
    version = _resolve_single_bundle_version (results, bundle_name, version_ish) 
    manifest = catalog.manifest_for_bundle (bundle_name, version = version) 
    def pretty(r) : 
        if print_sha : 
            return ('%s sha=%s' % (r ['file'], r ['sha'])) 
else : 
            return ('%s' % r ['file']) 
def results() : 
        all_files = sorted (manifest.get_all_files (flavor = flavor_name)) 
        for f in all_files : 
            d = { 
                'file' : f, 
                'sha' : manifest.sha_for_file (f), 
} 
            (yield DictResult (d, pretty = pretty)) 
return ResultSet (results) 

    
    

    Fix the buggy line: version = _resolve_single_bundle_version (results, bundle_name, version_ish)
assistant
#Here is Python program to fix the buggy line: version = _resolve_single_bundle_version (results, bundle_name, version_ish)
.

version = _resolve_single_bundle_version (catalog, bundle_name, version_ish)