Python 将Flask SQLAlchemy中的模型分离到另一个文件会破坏PyDev导入检测_Python_Flask_Pydev_Flask Sqlalchemy

Python 将Flask SQLAlchemy中的模型分离到另一个文件会破坏PyDev导入检测

python flask

Python 将Flask SQLAlchemy中的模型分离到另一个文件会破坏PyDev导入检测,python,flask,pydev,flask-sqlalchemy,Python,Flask,Pydev,Flask Sqlalchemy,我正在学习Flask，当我尝试将我的应用程序分离到更多模块时，PyDev开始报告导入的未定义变量。但是，代码仍然有效首先，我首先向强制内置添加了flask，以便PyDev动态解析扩展。这样PyDev就不会报告flask.ext..imports 此设置一切正常：模板/index.py <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html lang="en"> <head> <titl

我正在学习Flask，当我尝试将我的应用程序分离到更多模块时，PyDev开始报告导入的

未定义变量。但是，代码仍然有效
首先，我首先向强制内置添加了flask
，以便PyDev动态解析扩展。这样PyDev就不会报告flask.ext..
imports
此设置一切正常：
模板/index.py
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
    <title>Test</title>
</head>
<body>
    <ul>
    {% for user in all_users %}
      <li>{{ user.username }}</li>
    {% endfor %}
    </ul>
</body>
</html>

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

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email  

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

from flask.ext.sqlalchemy import SQLAlchemy

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email

from flask import Flask, render_template
from models import db, User

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

现在我将main\u old.py分为main.py和models.py，如下所示：
型号.py
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
    <title>Test</title>
</head>
<body>
    <ul>
    {% for user in all_users %}
      <li>{{ user.username }}</li>
    {% endfor %}
    </ul>
</body>
</html>

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

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email  

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

from flask.ext.sqlalchemy import SQLAlchemy

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email

from flask import Flask, render_template
from models import db, User

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

main.py
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en">
<head>
    <title>Test</title>
</head>
<body>
    <ul>
    {% for user in all_users %}
      <li>{{ user.username }}</li>
    {% endfor %}
    </ul>
</body>
</html>

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

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email  

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

from flask.ext.sqlalchemy import SQLAlchemy

db = SQLAlchemy()

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True)
    email = db.Column(db.String(120), unique=True)

    def __init__(self, username="", email=""):
        self.username = username
        self.email = email

from flask import Flask, render_template
from models import db, User

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///test.db"
db.init_app(app)

@app.route("/")
def hello():
    db.drop_all()
    db.create_all()
    db.session.add(User("John Doe", "john.doe@example.com"))
    db.session.add(User("Bill Smith", "smith.bill@example.com"))
    db.session.commit()
    all_users = User.query.all()
    return render_template('index.html', all_users=all_users)

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

它是等效的，但我从导入中得到未定义的变量：query
在all\u users=User.query.all（）行。
为什么PyDev导入检测会像这样中断？为什么它在一个文件中工作？有办法解决这个问题吗？除了@UndefinedVariable
之外，还有其他变通方法吗？
我仍然不知道为什么会发生这种情况，但变通方法是存在的
使用推荐的all\u users=db.session.query（User.all（）
而不是all\u users=User.all（）