利用jwt模块完成快速签发token

from rest_framework_jwt.settings import api_settings
jwt_payload_handler = api_settings.JWT_PAYLOAD_HANDLER
jwt_encode_handler = api_settings.JWT_ENCODE_HANDLER
def _get_token(user_obj):
payload = jwt_payload_handler(user_obj)
token = jwt_encode_handler(payload)
return token