Error loading ASGI app. Could not import module "src.main"

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Example Code

from fastapi import Depends, FastAPI, HTTPException, status
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from fastapi.security.oauth2 import OAuth2PasswordRequestForm
from . import models
from . import services
from .database import engine, get_db
from passlib.context import CryptContext
from sqlalchemy.orm import Session
from datetime import datetime, timedelta

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl='login')

pwd_context = CryptContext(schemes=['bcrypt'], depracated='auto')

models.Base.metadata.create_all(bind=engine)

SECRET_KEY = '[SECRET KEY]'
ALGORITHM = 'HS256'
ACCESS_TOKEN_EXPIRE_MINUTES = 30



@app.get("/")
async def root():
    return {"message": "Hello World"}
    
@app.get("/test/")
async def test(token:str = Depends(oauth2_scheme)):
    return {'token', token}

@app.post('/login/{method}')
async def login(method: str, form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(get_db), ):
    user = services.authenticate_user(form_data.username, form_data.password)
    if not user:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Incorrect username or password",
            headers={"WWW-Authenticate": "Bearer"},
        )
    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
    access_token = services.create_access_token(
        data={"username": user.username, "email": user.email}, expires_delta=access_token_expires
    )
    return {"access_token": access_token, "token_type": "bearer"}

Description

I saw the solution is changing ‘main’ -> ‘src.main’ so I tried that, but the same problem is occuring Even if I use ‘cd src’ to move to src and run ‘uvicorn main:app --reload’, errors continue. What do I need?

Operating System

Linux

Operating System Details

WSL 2

FastAPI Version

0.68.1

Python Version

3.8.10

Additional Context

No response

[filipinjo]

The error message will appear if there is circular import error. Unfortunately, instead of circular import error the “Error loading ASGI app. Could not import module ….” is reported.

[peterbb148]

Have exact same problem. Here’s my code:

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
async def root():
    return {"message": "Hello World"}

Command line:

uvicorn fastapi:app --reload --port 8001
INFO:     Will watch for changes in these directories: ['/Users/peter/Git/peterbb148/Python']
INFO:     Uvicorn running on http://127.0.0.1:8001 (Press CTRL+C to quit)
INFO:     Started reloader process [3942] using statreload
ERROR:    Error loading ASGI app. Could not import module "fastapi".

All file are in the same directory.