告诉Flask使用哪个虚拟环境(Tell Flask Which Virtual Environment To Use)

告诉Flask使用哪个虚拟环境(Tell Flask Which Virtual Environment To Use)

我正在尝试在Amazon EC2实例上设置flask。 我想从已安装的虚拟环境中运行带有python 3.5的烧瓶。

但是，当我运行flask时，它正在使用ubuntu python 2.7安装。

如何告诉flask使用虚拟环境python安装？

谢谢

I'm trying to setup flask on an Amazon EC2 instance. I want to run flask with python 3.5 from an installed virtual environment.

However when I run flask it is using the ubuntu python 2.7 installation.

How do I tell flask to use the virtual environment python installation?

Thanks

最满意答案

如果您在开发期间从CLI运行它，那么您的服务器上应该已经安装了python 3.5。 如果没有，那么运行sudo apt-get install python3 。 要运行应用程序：

python3 app.py

但是，因为你问的是virtualenv - 这是非常好的练习 - 你可以创建一个指定python3路径的新环境，如下所述。 如果您不知道路径，请运行which python3 。 对于我的电脑，运行Ubuntu 16.04：

virtualenv -p /usr/bin/python3 <path/to/new/virtualenv/>

然后：

source <env_name>/bin/activate

现在，即使对于开发人员来说，这也不是一个非常好的设置，并且对于制作而言绝对可怕。 我建议使用uWSGI和NGINX来为您的应用程序提供服务。 您可以在uWSGI配置中指定virtualenv路径 - 我建议使用.ini文件。 这是一个非常好的数字海洋教程，我曾经开始使用。 它不会教你一切，但它应该让你走上正确的道路。 这种配置在线有很多资源，因此您应该能够解决遇到的任何问题。

If you're running this from the CLI during development, you should already have python 3.5 on your server. If not then run sudo apt-get install python3. To run the app:

python3 app.py

However, since you are asking about virtualenv--which using is very good practice--you could create a new environment specifying the path of python3, as stated here. If you don't know the path, run which python3. For my computer, running Ubuntu 16.04:

virtualenv -p /usr/bin/python3 <path/to/new/virtualenv/>

Then:

source <env_name>/bin/activate

Now, this is not a very good setup even for dev and would be absolutely terrible for production. I would suggest using uWSGI and NGINX to serve your app. You can specify your virtualenv path in your uWSGI config--I would suggest using a .ini file. Here is a very good Digital Ocean tutorial that I used to get started. It won't teach you everything, but it should put you on the right path. There's a lot of resources for this configuration online, so you should be able to solve any problems you run into.