FastAPI with uvicorn getting 404 Not Found error

I’m trying (failing) to set up a simple FastAPI project and run it with uvicorn. This is my code:

from fastapi import FastAPI

app = FastAPI()

app.get('/')

def hello_world():
    return{'hello':'world'}

app.get('/abc')

def abc_test():
    return{'hello':'abc'}

JavaScript
​x
 
from fastapi import FastAPI
​
app = FastAPI()
​
app.get('/')
​
def hello_world():
    return{'hello':'world'}
​
app.get('/abc')
​
def abc_test():
    return{'hello':'abc'}
​

This is what I run from the terminal:

PS C:UsersadminDesktopSelf pace studyPythonDevday 14> uvicorn server2:app   
INFO:     Started server process [3808]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     127.0.0.1:60391 - "GET / HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:60391 - "GET /favicon.ico HTTP/1.1" 404 Not Found

JavaScript
 
PS C:UsersadminDesktopSelf pace studyPythonDevday 14> uvicorn server2:app   
INFO:     Started server process [3808]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     127.0.0.1:60391 - "GET / HTTP/1.1" 404 Not Found
INFO:     127.0.0.1:60391 - "GET /favicon.ico HTTP/1.1" 404 Not Found
​

As you see, I get a 404 Not found. What could be the reason? Some network-related stuff, possibly firewall/vpn blocking this connection or something else? I’m new to this. Thanks in advance!

Answer

You need to use a decorator like this: @app.get('/'). Take a look at the FastAPI Docs.

Additionally, take a look at how decorators work in general to get a better idea of how things work behind the scenes.

Some resources for you:

python docs

one of many articles I was able to find

another SO question

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Answer