Swagger produces key behaving differently in Openapi 3 - python-3.x

Question

I'm currently converting my swagger file to openapi3 and I have an endpoint thats returning a json response and I am using produces to output it as text/plain. I know the produces key for responses has been replaced in openapi3 by content: text/plain: etc.. but this is no longer converting my response. So previously if I called response.text after calling the endpoint I would get "This is a test." but now I get '"This is a test."\n'
Swagger 2 file:
/api/logs:
get:
description: Retrieve logs .
operationId: controller.get_logs
responses:
"200":
description: Job logs found
schema:
type: string
produces:
- text/plain
Openapi 3 file:
/api/logs:
get:
description: Retrieve logs .
operationId: controller.get_logs
responses:
"200":
description: Job logs found
content:
text/plain:
schema:
type: string
Below is a snippet of the application code, we call an external API and just return the response from that call. I don't have a snippet of the Api code to share but I have added some logs to display the response content:
resp = job.get_output() # Api call
try:
json_resp = resp.json()
LOGGER.info(f"Response: {resp}")
LOGGER.info(f"JSON: {json_resp}")
LOGGER.info(f"Text: {repr(resp.text)}")
LOGGER.info(f"Headers: {dict(resp.headers)}")
except Exception as error:
return (
{
"message": f"Failed to get job output for job: {job_id}"
},
HTTPStatus.NOT_FOUND,
)
return json_resp, HTTPStatus.OK, dict(resp.headers)
Log output:
LOGGER - Response: <Response [200]>
LOGGER - JSON: This is a test.
LOGGER - Text: '"This is a test."\n'
LOGGER - Headers: {'Date': 'Tue, 28 Jul 2020 15:23:31 GMT', 'Content-Type': 'application/json', 'Content-Length': '18', 'Connection': 'keep-alive'}
What am I doing wrong or am I missing something?