import datetime
import json
from json import JSONEncoder
from typing import Any, Optional, Tuple
class _DateTimeEncoder(JSONEncoder):
def default(self, o):
if isinstance(o, (datetime.date, datetime.datetime)):
return o.isoformat()
else:
return str(o)
def to_json_str(obj: Any, separators: Optional[Tuple[str, str]] = None) -> str:
return json.dumps(obj, cls=_DateTimeEncoder, separators=separators)