Otavio

“The learning paths on Dataquest are incredible. They give you a direction through the learning process – you don’t have to guess what to learn next.”

Otávio Silveira

Data Analyst @ Hortifruti

Course overview

In this course, you’ll learn how to work with APIs using Python, starting with understanding API structures and building up to practical data retrieval and analysis.
You’ll get hands-on experience with the Python requests library, handling JSON data, filtering results, managing errors, and working with authentication. Each lesson is grounded in real-world scenarios so you can apply what you learn right away.
By the end, you’ll be comfortable extracting and working with data from a variety of sources for both analysis and application development. The course wraps up with a guided project where you’ll build a multi-provider LLM gateway.

Key skills

  • Understanding and interacting with APIs using Python
  • Effective data handling with the Python requests library and JSON
  • Query parameters and data filtering
  • Navigating authentication, API keys, and understanding rate limits in API Usage

Course outline

APIs for AI Applications [3 lessons]

Optional Query Parameters and Data Filtering 2h

Lesson Objectives
  • Understand the purpose and usage of optional query parameters in API requests.
  • Apply query parameters to filter API data requests.
  • Handle invalid parameter values and troubleshoot issues.
  • Implement pagination in API requests.

Authentication, API Keys, and Rate Limits 1h

Lesson Objectives
  • Understand the concept of authentication in API usage.
  • Obtain and use API keys for accessing protected data.
  • Navigate API documentation to understand basic and advanced features.
  • Understand API quotas and how they impact data retrieval.
  • Understand the concept of rate limits in API usage.
  • Apply techniques to avoid exceeding rate limits.

Guided Project: Build a Multi-Provider LLM Gateway 2h

Lesson Objectives
  • Build a simple gateway layer for multiple LLM providers
  • Implement direct HTTP requests using the requests library
  • Handle provider-specific authentication and request formatting differences
  • Parse and normalize responses from different API structures
  • Design custom exceptions for clear error handling

Projects in this course

Build a Multi-Provider LLM Gateway

Build a unified LLM gateway that abstracts TogetherAI and Anthropic APIs behind a single interface. Learn to handle provider-specific authentication, request formats, and response parsing while maintaining consistent output across different LLM providers.

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Aaron

Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”

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Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”

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Victoria E. Guzik

Associate Data Scientist at Callisto Media

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