Faculty Development Program (FDP) Presentation Content

What is Python? Why Python?

• Python is a high-level, general-purpose programming language known for its readability and versatility. It emphasizes code clarity and simplicity, making it beginner-friendly while also being powerful enough for complex tasks.
• Python's popularity stems from its:
  • Readability: Clear and concise syntax, making it easier to learn and maintain.
  • Versatility: Suitable for a wide range of applications, from web development and data science to machine learning and automation.
  • Large Community: A vast and active community provides excellent support, extensive libraries, and abundant resources.

Python Trivia

• Python interpreter 'CPython' is written in C language
• Python (1991) is older than Java (1995)
• Python is used in the International Space Station (ISS).

Transition to APIs

An API, or Application Programming Interface, acts as a messenger between different software systems, allowing them to communicate and exchange data. Analogy: Restaurant Order

• Synchronous - REST, GRPC etc
• Asynchronous - Kafka, RabbitMQ etc

FastAPI

FastAPI is a simple, modern, high-performance web framework for building APIs with Python

Setup environment - install/setup Python venv, create project structure

• What's venv? Why do we need it?

• Setup python venv in vscode:

• Setup python venv in vscode -> Command Palette > Python: Create Environment

• Setup venv in commandline

  python3 -m venv .venv
  source ./.venv/bin/activate
  # To deactivate venv
  deactivate

• Install required packages (uvicorn, fastapi)

  pip install fastapi uvicorn "uvicorn[standard]" "fastapi[standard]" 

Build a Hello World API using Python FastAPI

• create a basic GET endpoint ("Hello World")
• API Specification: It is a contract between the API provider and the API consumers, ensuring that both parties understand how to interact with the API correctly.
• HTTP methods: GET, POST, DELETE, PATCH, PUT
• Show a simple API specification (sample_api_spec.yaml)
• Run the application and show the output

  uvicorn main:app --reload

Build a Student App using Python FastAPI

• APIs:
  • POST /students - Create a student record
  • GET /students - Get all students' details
  • GET /students/{id} - Get details of a student
• Run the application and show the output

  uvicorn main:app --reload

Q&A

Additional Topics

• Brief introduction about Language models
• Interfacing with models using Python/Jupiter Notebook
• Brief introduction to AI Agents

Summary

Contact Info

git commands

• Clone this repo: git clone https://github.com/rajesh1084/fdp.git (or fork this repo)