Beginner DE Bootcamp: Python
I’m currently following Zac Wilson’s Beginner Data Engineering Bootcamp on DataExpert.io, and this week I completed Module 2.1, which focuses on building a simple REST API extractor using Python.
The goal of this mini-project is to build a script that connects to the Polygon.io API, pulls stock ticker data, and saves it into a clean CSV file. It’s a small but important milestone: reading data from an external API, handling multiple pages of results, and producing a structured dataset that’s ready for analysis.
📌 What the Script Does
This project contains a single Python script, script.py, which:
- Connects to the Polygon.io API and requests a list of stock tickers
- Follows the
"next"link in the API response until all pages are fetched - Normalizes and writes the data into a CSV file (
tickers.csv) - Ensures consistent columns for every row
- Stops and shows an error message if the API returns any errors
You can find the source code for this project here:
🔗 stock-trading-python-app
👉 Huge thanks to Zac Wilson for launching this free learning resource for aspiring data engineers!