React hooks and fetch — connecting to FastAPI

Python for AI Career is a Pro course

Controlled inputs and updater functions with useState, loading, error and success from one status, calling FastAPI with fetch, useEffect dependencies and cleanup, StrictMode's double effect, and testing CORSMiddleware and the preflight.

The Python course is free and complete — this course is not made of anything taken out of it. Every chapter of a Pro course runs the full six steps:

• Encounter — Meet the problem before the definition — what cannot be done without this.
• Understand — Build the mental model: what Python actually does, and why this way.
• Worked — A complete example with its real output — run, not imagined.
• Predict — Say what happens before running it. A wrong prediction teaches more than a right one.
• Apply — Write it and run it on your own machine. Reading it is not the same as doing it.
• Stretch — Ten questions from easy to hard. The last ones are difficult on purpose.