新手学习Flask，不知道错哪了。

Question

错误提示如下：

Traceback (most recent call last): File
"/Users/duzhipeng/project/manage.com/run.py", line 3, in

app = create_app() File "/Users/duzhipeng/project/manage.com/app/init.py", line 11,
in create_app
db.init_app(app) TypeError: init_app() missing 1 required positional argument: 'app'

Process finished with exit code 1

其中，run.py:

from app import create_app

app = create_app()

if __name__ == '__main__':
    app.run(debug=True)

另一个文件：app/init.py:

from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy

db = SQLAlchemy


def create_app():
    app = Flask(__name__)
    app.config.from_object('config')

    db.init_app(app)

    from . import views as manage_blueprint
    app.register_blueprint(manage_blueprint)

    return app

希望帮我解决问题的大哥留下支付宝账号，10元一个问题，防止我以后不动脑。这次真的不明白错哪了，看了好些资料了。

Answer 1

没有实例 SQLAlchemy 创建db对象。改成下面即可

db = SQLAlchemy()