How to create your first project with fastAPI

fastAPI is a modern web framework for building APIs with Python. It is fast, easy to use, and comes with built-in support for data validation, serialization, and documentation. In this article, we will guide you through the process of creating your first project using fastAPI.

Step 1: Install fastAPI

To get started, you need to install fastAPI. You can do this using pip by running the following command:

pip install fastapi

Step 2: Create a new Python file

Next, create a new Python file for your project. You can name it whatever you like, for example, app.py.

Step 3: Write your first fastAPI application

Now, you can start writing your fastAPI application. Here is a simple example to get you started:

from fastapi import FastAPI

app = FastAPI()

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

This code defines a simple fastAPI application with a single route ‘/’ that returns a JSON response {‘Hello’: ‘World’}.

Step 4: Run your fastAPI application

To run your fastAPI application, you can use the uvicorn server. Install uvicorn by running the following command:

pip install uvicorn

Then, you can start your fastAPI application by running:

uvicorn app:app --reload

This command starts the uvicorn server and reloads your application automatically when you make changes to your code.

Step 5: Test your fastAPI application

Now that your fastAPI application is running, you can test it by opening a web browser and navigating to http://localhost:8000/. You should see the JSON response {‘Hello’: ‘World’} displayed on the page.

Congratulations! You have successfully created your first project with fastAPI. Now you can start building more complex APIs and explore the features of fastAPI further.