solr_python_4.py

import more_itertools as mit
facets = {}

for k,v in raw_response['facet_counts']['facet_fields'].items():
    spec_list = [list(spec) for spec in mit.chunked(v, 2)]
    spec_dict = {}
    for spec in spec_list:
        spec_dict[spec[0]] = spec[1]
    facets[k] = spec_dict

raw_response['facet_counts']['facet_fields'] = facets