Which framework to choose: FastAPI, Flask, or Django? #shorts #backend #fastapi #django #flask #frameworks

I choose to write a detailed tutorial about FastAPI, as it is a modern and efficient web framework for building APIs with Python. FastAPI is becoming increasingly popular due to its high performance and simplicity of use. In this tutorial, I will walk you through the process of creating a basic API using FastAPI.

Step 1: Setting up FastAPI
To get started with FastAPI, you will first need to install it. You can do this using pip by running the following command:

pip install fastapi

You will also need to install an ASGI server, such as uvicorn, to run your FastAPI application:

pip install uvicorn

Step 2: Creating a FastAPI application
Next, create a new Python file for your FastAPI application. In this tutorial, I will create a simple API that returns a list of user’s names. Here is an example of a basic FastAPI application:

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return {"Hello": "World"}

@app.get("/users")
def read_users():
    return {"users": ["Alice", "Bob", "Charlie"]}

Save this code in a file named app.py.

Step 3: Running the FastAPI application
To run your FastAPI application, you can use the uvicorn ASGI server. Simply run the following command in your terminal:

uvicorn app:app --reload

This command will start the uvicorn server and reload the application whenever you make changes to the code.

Step 4: Testing the API
Once your FastAPI application is running, you can access the API by navigating to http://localhost:8000 in your browser. You should see a JSON response with the message "Hello: World" when you visit the root URL, and a list of user’s names when you visit /users.

That’s it! You have successfully created a basic API using FastAPI. FastAPI is a powerful and flexible framework that allows you to build APIs quickly and efficiently. I encourage you to explore the official FastAPI documentation to learn more about its features and capabilities.