/Python/Could not locate a bind configured on mapper mapped class class->tablename, SQL expression or this Session.

Could not locate a bind configured on mapper mapped class class->tablename, SQL expression or this Session.

# When working with FastAPI
# database.py

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

SQLALCHEMY_DATABASE_URL = "mysql://user:pwd@host:port/db"
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()


# main.py

from fastapi import FastAPI, Depends
from sqlalchemy.orm import Session

from database import SessionLocal
import schema

def get_db():
    # The important thing here is to create an instance of SessionLocal
    # from database.py not Session from sqlalchemy
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()
        
@app.get("/user", response_model=schema.User)
def get_user(user_id: int, db: Session=Depends(get_db))
	user = crud.get_user(db, user_id=user_id)
    return user

Similar codes

0 vote300 views1 answer
Str.extract
Python
0 vote294 views1 answer
Pandas read_csv nan as empty string
Python
1 vote330 views2 answers
How to append to an empty dataframe pandas
Python
0 vote332 views1 answer
Label default text value python
Python
1 vote281 views1 answer
Django pass data between views
Python Django
3 votes342 views2 answers
Print first word of a string python and return it
Python
25 votes294 views5 answers
Pandas show all dataframe
Python
0 vote282 views1 answer
Python change recursion depth
Python
0 vote311 views1 answer
Create and add many to many field in django
Python
0 vote349 views1 answer
Python instagram login
Python