July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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354
｜
附录
D
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D.5
第
5
步
：
安装
virtualenv
（
Windows
、
Mac
、
Linux
）
我们已经设置了第二个
Python
实例，但是现在我们想要设置一种创建独立的
Python
环境
的方式。通过隔离不同的项目和依赖，
virtualenv
可以帮助我们达到这个目的。如果有多
个项目，我们可以确保每个需求间没有冲突。
为了安装
virtualenv
，我们需要
Setuptools
（
http://pythonhosted.org//setuptools/
）。安装完
Python
，
Setuptools
也就跟着安装了。
Setuptools
的一部分是名为
pip
的命令行工具，我们
使用它来安装
Python
包。
为了安装
virtualenv
（
http://virtualenv.readthedocs.org/en/latest/
），在命令行中运行下面的
命令：
$ pip install virtualenv
在运行这个命令后，输出的一部分应该为：
Successfully installed virtualenv
。如果你得到这
个信息，那么所有事情运行良好。如果没有，那么你有其他需要解决的问题，可以在网络
上搜索，寻求帮助。
D.6
第
6
步
：
创建一个新目录
在继续之前，让我们创建一个目录，来维护项目相关的内容。根据个人喜好确定位置。为
便于访问和备份，大多数人在用户
home
目录中创建文件夹。你可以将目录放在任何你喜 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.