FastAPI: " ImportError: attempted relative import with no known parent package"

Question

I am new to FastAPI and I've been having this problem with importing my other files.

I get the error:‍‍‍‍

from . import schemas
ImportError: attempted relative import with no known parent package

For context, the file I am importing from is a Folder called Blog. I saw certain StackOverflow answers saying that instead of from . import schemas I should write from Blog import schemas. And even though their solution is right and I don't get any errors while running the python program, When I try running FastAPI using uvicorn, I get this error and my localhost page doesn't load.

  File "./main.py", line 2, in <module>
from Blog import schemas
ModuleNotFoundError: No module named 'Blog'

The file structure looks like this:

The code to the main file looks like this:

from fastapi import FastAPI
from Blog import schemas, models
from database import engine

app = FastAPI()

models.Base.metadata.create_all(engine)


@app.post('/blog')
def create(request: schemas.Blog):
    return request

schemas.py

from pydantic import BaseModel


class Blog(BaseModel):
    title: str
    body: str

database.py

from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

SQLALCHAMY_DATABASE_URL = 'sqlite:///./blog.db'

engine = create_engine(SQLALCHAMY_DATABASE_URL, connect_args={"check_same_thread": False})

SessionLocal = sessionmaker(bind=engine, autocommit=False, autoflush=False)

Base = declarative_base()

models.py

from sqlalchemy import *
from database import Base


class Blog(Base):
    __tablename__ = 'blogs'
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String)
    body = Column(String)

The SwaggerUI is not loading either.

Any help would be greatly appreciated! :)

Answer 1

You can also run your app from the folder above. For example if you use uvicorn, you can do

uvicorn folder.main:app --reload

instead of

uvicorn main:app --reload

then you can keep the dot.

Answer 2

Since your schemas.py and models.py files are in the same directory as your main.py file, you should import those two modules as follows, instead of using from Blog import schemas, models:

import schemas, models

For more details and examples please have a look at this answer, as well as this answer and this answer.

Answer 3

Hello for me helped this way (without dot):

from models import User
## instead of 
# from .models import User

Answer 4

import schemas

it's working for me

ScreenShot of the working code