我正在做教程 ( https://www.youtube.com/watch?v=dam0GPOAvVI&t=2412s ) 它工作得很好，因为出现了一个我不知道的问题。当我运行 main.py
Traceback (most recent call last):
File "c:\Users\admin\Documents\Flask\main.py", line 6, in <module>
app.run(debug=True)
AttributeError: 'NoneType' object has no attribute 'run'
PS C:\Users\admin\Documents\Flask>
网站无法访问
This site can’t be reached
127.0.0.1 refused to connect.
如果你知道我为什么要为此苦苦挣扎，那将会非常有帮助 Flask/main.py
from website import create_app
app = create_app()
if __name__ == '__main__':
app.run(debug=True)
网站/init.py
from flask import Flask
def create_app():
app = Flask(__name__)
app.config['SECRET_KEY'] = 'hello'
from website.views import views
from website.auth import auth
app.register_blueprint(views, url_prefix='/')
app.register_blueprint(auth, url_prefix='/')
网站/views.py
from flask import Blueprint, render_template
views = Blueprint('views', __name__)
@views.route('/')
def home():
return render_template("home.html")
网站/auth.py
from flask import Blueprint, render_template
auth = Blueprint('auth', __name__)
@auth.route('/login')
def login():
return render_template('login.html')
@auth.route('/logout')
def logout():
return "<p>Logout</p>"
@auth.route('/sign-up')
def sign_up():
return render_template('sign_up.html')
模板/base.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link
rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh"
crossorigin="anonymous"
/>
<link
rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css"
crossorigin="anonymous"
/>
<title>{% block title %}Home{% endblock %}</title>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<button
class="navbar-toggler"
type="button"
data-toggle="collapse"
data-target="#navbar"
>
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbar">
<div class="navbar-nav">
<a class="nav-item nav-link" id="home" href="/">Home</a>
<a class="nav-item nav-link" id="logout" href="/logout">Logout</a>
<a class="nav-item nav-link" id="login" href="/login">Login</a>
<a class="nav-item nav-link" id="signUp" href="/sign-up">Sign Up</a>
</div>
</div>
</nav>
<div class="container">
{% block content %}
{% endblock %}
</div>
<script
src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin="anonymous"
></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin="anonymous"
></script>
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin="anonymous"
></script>
<script
type="text/javascript"
src="{{ url_for('static', filename='index.js') }}"
></script>
</body>
</html>
模板/home.html
{% extends "base.html" %} {% block title %}Home{% endblock %}
{% block content %}
<center>
<h1> This Is the home page</h1>
</center>>
{% endblock %}
模板/login.html
{% extends "base.html" %} {% block title %}Login{% endblock %}
{% block content %}
<center>
<h1> This Is the login page</h1>
</center>>
{% endblock %}
模板/sign_up.html
{% extends "base.html" %} {% block title %}Sign Up{% endblock %}
{% block content %}
<center>
<h1> This Is the sign up page</h1>
</center>>
{% endblock %}
请帮助我
最佳答案
在website/init.py末尾，您需要包含
def create_app():
# your other code
return app # add this
Flask/main.py 中的 create_app() 当前不返回任何内容 (None)。
关于python - 运行时 Flask 中出现属性错误(AttributeError : 'NoneType' object has no attribute 'run' )，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/67982985/