Stage 2 · Lesson 3 of 6
HTTP, REST and reading a failed request
Nearly every integration speaks . A request has a method (GET, POST, PUT, DELETE), a URL, headers such as the authorisation , and often a body. The response has a status code and a body.
REST is a common style that organises URLs around resources, such as /customers/42/orders. Learn to send requests with curl or Postman and to read status codes: 2xx worked, 4xx means the caller made a mistake, 5xx means the server failed, and means you are sending too many requests. Reading a failed request carefully solves most integration bugs in minutes.
Common trapretrying every error the same way, when a 400 needs a fix, a 429 needs waiting and a 503 may succeed later.
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Resources for this stage
Start with· follow one of these
- CoursePaidGrokking Python Fundamentals
Design Gurus · Beginner · $50
A structured path to real Python fluency, the most common glue language in customer work
- CourseFreeCS50's Introduction to Programming with Python
Harvard University · Beginner
Free: Harvard's Python course, with file I/O, libraries and tests in the later weeks