I believe a better solution is to set the app configuration. For me, I built the tool and then pushed it to a development server where I had to set up a WSGI pipeline to manage the flask web app. I had some data being updated to a template and I wanted it to refresh every X minutes (WSGI deployment for the Flask site through APACHE2 on UBUNTU 18). In your app.py or whatever your main app is, add app.config.update dictionary below and mark TEMPLATES_AUTO_RELOAD=True, you will find that any templates that are automatically updated on the server will be reflected in the browser. There is some great documentation on the Flask site for configuration handling found here.

app = Flask(__name__)
app.config.update(
    TEMPLATES_AUTO_RELOAD=True
)

使用这个方法:

app.run(debug=True)

当发生代码更改时，它将自动重新加载flask应用程序。

示例代码:

from flask import Flask

app = Flask(__name__)

@app.route("/")
def index():
   return "Hello World"


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

好吧，如果你想节省时间，而不是每次发生更改时都重新加载网页，那么你可以尝试键盘快捷键Ctrl + R来快速重新加载页面。

在终端上你可以简单地说

export FLASK_APP=app_name.py
export FLASK_ENV=development
flask run

或者在你的文件中

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

帮助快速自动更改浏览器:

PIP安装负载

from livereload import Server

if __name__ == '__main__':
    server = Server(app.wsgi_app)
    server.serve()

接下来，再次启动服务器:

如。你的.py文件是app.py

python app.py

I believe a better solution is to set the app configuration. For me, I built the tool and then pushed it to a development server where I had to set up a WSGI pipeline to manage the flask web app. I had some data being updated to a template and I wanted it to refresh every X minutes (WSGI deployment for the Flask site through APACHE2 on UBUNTU 18). In your app.py or whatever your main app is, add app.config.update dictionary below and mark TEMPLATES_AUTO_RELOAD=True, you will find that any templates that are automatically updated on the server will be reflected in the browser. There is some great documentation on the Flask site for configuration handling found here.

app = Flask(__name__)
app.config.update(
    TEMPLATES_AUTO_RELOAD=True
)

app.run(use_reloader=True)

我们可以使用这个use_reloader，这样每次重新加载页面时，我们的代码更改都会被更新。