init .py和models.py位于同一目录(myproject)
myproject | -- __init__.py -- models.py | app.py
当我尝试从init导入models.py内的内容时,我得到:
ModuleNotFoundError: No module named 'myproject'
我尝试什么:
from myproject import db,login_manager
当它与另一个.py文件位于同一目录中时,如何从init(例如数据库)中导入内容?
内部初始化:
import os
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_login import LoginManager
login_manager = LoginManager()
app = Flask(__name__)
app.config['SECRET_KEY'] = 'mysecretkey'
basedir = os.path.abspath(os.path.dirname(__file__))
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///' +
os.path.join(basedir, 'data.sqlite')
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
Migrate(app,db)
login_manager.init_app(app)
login_manager.login_view = "login"
models.py内部:
from myproject import db,login_manager
from werkzeug.security import
generate_password_hash,check_password_hash
from flask_login import UserMixin
@login_manager.user_loader
def load_user(user_id):
return User.query.get(user_id)
class User(db.Model, UserMixin):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key = True)
email = db.Column(db.String(64), unique=True, index=True)
username = db.Column(db.String(64), unique=True, index=True)
password_hash = db.Column(db.String(128))
def __init__(self, email, username, password):
self.email = email
self.username = username
self.password_hash = generate_password_hash(password)
def check_password(self,password):
return check_password_hash(self.password_hash,password)
在app.py内部(我从中执行项目的地方-它也可以工作)只是想知道为什么在models.py中导入会输出错误消息
from myproject import app,db
from flask import render_template, redirect, request, url_for,
flash,abort
from flask_login import login_user,login_required,logout_user
from myproject.models import User
from myproject.forms import LoginForm, RegistrationForm
from werkzeug.security import generate_password_hash,
check_password_hash
@app.route('/')
def home():
return render_template('home.html')
-- (some more view functions) --
if __name__ == '__main__':
app.run(debug=True)
答案 0 :(得分:1)
使用.
从同一级别导入。
from . import db, login_manager
答案 1 :(得分:0)
您需要设置PYTHONPATH,以便model.py可以找到myproject模块。
如果您正在运行flask shell,请在myproject目录中尝试以下操作
export PYTHONPATH=.
flask shell
参考:https://docs.python.org/2/using/cmdline.html#envvar-PYTHONPATH