in src/ab/utils/serializer.py [0:0]
def _handle_dict(d, skip_underscore=False):
converted = ((str(k), json_serializable(v, skip_underscore))
for k, v in d.items())
if skip_underscore:
converted = ((k, v) for k, v in converted if k[:2] != '__')
return {k: v for k, v in converted if v is not _cant_serialize}