FastAPI installation and setup - Mini Project: Build & Apply

FastAPI installation and setup

📖 Scenario: You want to create a simple web API using FastAPI, a modern Python web framework. Before writing any code, you need to install FastAPI and set up a basic application file.

🎯 Goal: Install FastAPI and create a minimal FastAPI app file that can run a web server.

📋 What You'll Learn

Install FastAPI using pip

Install an ASGI server called 'uvicorn' to run the app

Create a Python file named main.py

In main.py, create a FastAPI app instance

💡 Why This Matters

🌍 Real World

FastAPI is used to build fast and efficient web APIs for real-world applications like data services, web backends, and microservices.

💼 Career

Knowing how to install and set up FastAPI is essential for backend developers working with modern Python web frameworks.

1

Install FastAPI package

Use the command pip install fastapi in your terminal or command prompt to install the FastAPI package.

FastAPI

# Install the FastAPI package using pip
# Your code here

Need a hint?

Open your terminal and type exactly pip install fastapi to install the package.

2

Install Uvicorn ASGI server

Use the command pip install uvicorn in your terminal to install Uvicorn, which will run your FastAPI app.

FastAPI

# Run the command 'pip install uvicorn' in your terminal

Need a hint?

Uvicorn is a lightweight server for FastAPI. Install it by typing pip install uvicorn.

3

Create FastAPI app instance

In a new file named main.py, write the code to import FastAPI from fastapi and create an app instance called app with app = FastAPI().

FastAPI

# Create a file named main.py
# Write 'from fastapi import FastAPI' and 'app = FastAPI()' inside it
# Your code here

Need a hint?

Open main.py and type exactly from fastapi import FastAPI and then app = FastAPI().

4

Run the FastAPI app with Uvicorn

Run the command uvicorn main:app --reload in your terminal to start the FastAPI server with auto-reload enabled.

FastAPI

# Run the command 'uvicorn main:app --reload' in your terminal

Need a hint?

Start your server by typing exactly uvicorn main:app --reload in your terminal.