I want to pass a JSON object to a fastapi backend. Here is what I am doing in the frontend app:
data = {'labels': labels, 'sequences': sequences}
response = requests.post(api_url, data = data)
Here is how the backend API looks like in fastapi:
@app.post("/api/zero-shot/")
async def Zero_Shot_Classification(request: Request):
data = await request.json()
However, I am seeing an error:
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
You should use json parameter instead (which will change the Content-Type in the header to application/json), not data which is used for sending form data. Also, please have a look at the documentation on how to benefit from using Pydantic models for request bodies.
response = requests.post(api_url, json=data)