如何为Postgres Mac终端设置DATABASE_URL环境变量? [英] How to set DATABASE_URL environment variable for Postgres Mac terminal?

问题描述

我在Mac上使用的是postgres.我有一个数据库并且正在运行.我想将其与Flask(SQL Alchemy)一起使用，但是 DATABASE_URL 环境变量并未创建自身(我认为应该这样做).这是我尝试运行的代码:

I am using postgres on Mac. I have a database up and running. I want to use it with Flask (SQL Alchemy) but the DATABASE_URL environment variable didn't create itself (I think it's supposed to do that). Here is the code I tried running:

import os
print(os.getenv("DATABASE_URL"))

并且没有输出.如何设置变量(如果需要手动设置).

And there's no output. How can I set the variable (if I need to set it up manually).

推荐答案

是的，您必须手动执行此操作.因此，在您的终端中执行以下操作:

Yes, you have to do that manually. So, within your terminal do this:

% cd
% nano .bash_profile

它将在终端的编辑器中打开文件"bash_profile".在其中可以设置环境变量，例如:

It will open a file 'bash_profile' in editor in your terminal. And in there you can set environmental variables like:

export DATABASE_URL="YOUR DATABASE URL"

查看此视频以了解更多信息: https://youtu.be/5iWhQWVXosU

Check this video out for more info: https://youtu.be/5iWhQWVXosU

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