AttributeError:"SQLAlchemy"对象没有属性"Models"

问题描述

AttributeError:sqlalchemy对象没有属性"Models"有时ModuleNotFoundError:不会发生名为模型"的模块错误.我已经安装了所有要求，例如pip install sqlalchemy，flask-sqlalchemy，psycopy2-binary.

AttributeError: sqlalchemy object has no attribute "Models"and some times ModuleNotFoundError: No module named 'models' error is occurring. I already installed all requirements like pip install sqlalchemy, flask-sqlalchemy, psycopy2-binary.

import os

from flask import Flask, render_template, request
from models import *

app = Flask(__name__)

app.config["SQLALchemy_DATABASE_URI"] = os.getenv("DATABASE_URL")
app.config["SQLALchemy_TRACK_MODIFICATIONS"] = False
db.init_app(app)

def main():
    db.create_all()

if __name__ == "__main__":
    with app.app_context():
        main()

回溯(最近通话最近):文件"create.py"，第5行，在从模型导入*AttributeError:sqlalchemy对象没有属性模型"

Traceback (most recent call last): File "create.py", line 5, in from models import *AttributeError: sqlalchemy object has no attribute "Models"

推荐答案

在您的models.py文件中确保您的数据库对象是

Make shure in your models.py in your db object is

db = SQLAlchemy()

db = SQLAlchemy()

不是db = SQLAlchemy，因为SQLAlchemy是一个类

NOT db = SQLAlchemy , because SQLAlchemy is a class

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