How do you properly handle 'content-type in python' for HTTP requests and responses? or What’s the be

Yo, content-type in python is like the secret handshake for APIs. Get it wrong, and you’re locked out.

Quick fixes:
- Use `json=` in `requests` for JSON (auto-sets content-type).
- For files, `files=` handles it.
- For anything else, set `headers={'Content-Type': 'whatever'}`.

If you’re stuck, try `print(response.json())`—sometimes the error message tells you exactly what’s wrong.