Python
Pipe a hosted script to python3. Runny does not run Python.
Fetch
Runny hosts the file. Python runs on the client. The generated one-liner uses python3 even though the stored runtime is python.
curl -fsSL https://runny.sh/r/{slug} | python3
Private
curl -fsSL -H "Authorization: Bearer TOKEN" https://runny.sh/r/{slug} | python3