使用Python开发Flask应用时如何自动刷新浏览器? [英] How to automate browser refresh when developing an Flask app with Python?
问题描述
我已经开始学习Flask来开发Web应用程序.我真正想念的是任何代码更改(包括静态文件，模板等)后，浏览器会自动刷新.这似乎是几乎所有Javascript框架中的标准功能.前端人员对此有以下几个术语:自动重载/刷新，热重载/刷新(hotreload)，实时重载/刷新(livereload)，...
I've started learning Flask to develop web applications. What I am realy missing is an automatic Browser refresh after any code change (including static files, templates, etc.). This seems to be a standard feature in almost any Javascript framework. Frontend people have several terms for that: auto reload / refresh, hot reload / refresh (hotreload), live reload / refresh (livereload), ...
在Stackoverflow上，最相似的问题与Flask服务器的自动重载有关(-> https://stackoverflow.com/search?q=flask+auto+reload ).
Here on Stackoverflow most similar questions are related to the auto-reload of the Flask server (--> https://stackoverflow.com/search?q=flask+auto+reload).
J只希望刷新浏览器即可.
我用Google搜索并尝试了几件事-没运气:
I googled and tried several things - with no luck:
- https://github.com/lepture/python-livereload
- https://gist.github.com/amontalenti/8922609
我如何能在使用Flask时获得流畅的开发体验，而不必每天在浏览器中按F5键1000次才能查看更改结果?
How can I have a smooth developing experience with Flask without having to hit the F5 key 1000 times a day in a browser just to see the results of my changes?
我认为答案与上面链接中的python-livereload相近.
所以我想我的问题的另一个标题可能是:
I think the answer is somewhere near to python-livereload from the link above.
So I guess an alternative title of my question could be:
有人可以使用Flask + python-livereload吗?
我很愚蠢，无法从他们的文档中获取它:)
I am to dumb to get it from their documentation :)
为了完整起见，这里是我正在使用的Flask应用程序.
for the sake of completenes here is the Flask app I am using.
# filename: main.py
from flask import Flask, render_template
from livereload import Server
app = Flask(__name__)
@app.route('/')
def index():
return "INDEX"
@app.route('/bart')
def use_jinja():
return render_template('basic.html')
if __name__ == '__main__':
server = Server(app.wsgi_app)
server.serve(port=5555)
我通过以下方式启动应用
I start the app with
python main.py
推荐答案
您提出了一个有趣的问题，因此我构建了一个使用livereload库的快速且肮脏的Flask应用程序.下面列出了使它正常工作的关键步骤:
This is an interesting question you've raised so I built a quick and dirty Flask application which utilizes the livereload library. Listed below are the key steps for getting this to work:
-
下载并安装livereload库:
Download and install the livereload library:
pip install livereload
在启动烧瓶应用程序的主文件中，在我的特殊情况下，run.py用livereload提供的Server类包装烧瓶应用程序.
Within your main file which starts up your flask application, run.py in my particular case, wrap the flask application with the Server class provided by livereload.
例如，我的run.py文件如下所示:
For example, my run.py file looks like the following:
from app import app
from livereload import Server
if __name__ == '__main__':
server = Server(app.wsgi_app)
server.serve()
-
再次启动服务器:
Start your server again:
python run.py
在浏览器中导航到localhost，您的代码更改将自动刷新.对我来说，我使用了livereload提供的默认端口5500，因此我的网址如下所示:http://localhost:5500/.
Navigate to localhost in the browser and your code changes will be auto-refreshed. For me I took the default port of 5500 provided by livereload so my url looks like the following: http://localhost:5500/.
通过这些步骤，您现在应该可以在Python开发中利用自动重载的功能，类似于webpack为大多数前端框架提供的功能.
With those steps you should now be able to take advantage of auto-reloads for your python development, similar to what webpack provides for most frontend frameworks.
为完整性起见，可以在此处找到
For completeness the codebase can be found here
希望有帮助！
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