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Learn AI with Python · Lesson

REST API Fundamentals for Data Collection

HTTP GET/POST, headers, authentication (API key, Bearer), JSON parsing with requests.

Why APIs Matter for AI

Models are only as good as their data. Web APIs let you collect fresh, structured data on demand — weather, prices, social posts, public datasets — instead of relying on a single static file.

This course uses Python and the popular requests library to fetch and store that data.

What Is a REST API?

A REST API exposes resources over HTTP. You send a request to a URL (endpoint) and get back data, usually as JSON.

The main HTTP methods:

  • GET — read data
  • POST — create data
  • PUT/PATCH — update
  • DELETE — remove

For data collection you mostly use GET.

All lessons in this course

  1. REST API Fundamentals for Data Collection
  2. Paginating and Collecting Large Datasets
  3. Storing Collected Data Efficiently
  4. Working with Public Data APIs
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