How to run fastapi from terminal?

@jasen 

To run a FastAPI application from the terminal, you can follow these steps:

1. Make sure you have FastAPI installed in your Python environment. You can install FastAPI using pip:

1

pip install fastapi

1. Create a Python script with your FastAPI application code. For example, create a file named app.py with the following code:

1
2
3
4
5
6
7

from fastapi import FastAPI

app = FastAPI()

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

1. Now, you can run your FastAPI application by executing the following command in the terminal:

1

uvicorn app:app --reload

This command starts the Uvicorn server and loads your FastAPI application located in the app.py file. The --reload flag will automatically restart the server whenever you make changes to your code.

1. After running the command, you should see output similar to the following:

1

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

1. You can now open a web browser and go to http://127.0.0.1:8000 to see your FastAPI application running.

That's it! You have successfully run a FastAPI application from the terminal.