涓滴之水终可磨损大石，不是由于它力量大，而是由于昼夜不舍的滴坠。只有勤奋不懈的努力才能够获得那些技巧，因此，我们可以确切地说：说：不积跬步，无以致千里。——贝多芬
创建虚拟环境命令：
| 命令 | 行为 |
|---|---|
| mkvirtualenv +环境名称 | 创建虚拟环境 |
| deactivate | 退出虚拟环境 |
| wokeon + 环境名称 | 进入到某个虚拟环境中 |
| pip list | 查看虚拟环境安装包 |
| pip freeze | 详细查看安装包（带版本号） |
| pip install --upgrade pip | 更新pip 命令 |
| pip install django ==1.8.2 | 安装django（教程中版本） |
安装django报错：
Collecting django==1.8.2
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7facae9b2f98>: Failed to establish a new connection: [Errno 101] 网络不可达',)': /simple/django/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7facae9b2dd8>: Failed to establish a new connection: [Errno 101] 网络不可达',)': /simple/django/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7facae9b29b0>: Failed to establish a new connection: [Errno 101] 网络不可达',)': /simple/django/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7facae9b2b38>: Failed to establish a new connection: [Errno 101] 网络不可达',)': /simple/django/
解决办法：根据提示更新pip命令,#号注释语句。
pip (8.1.2)
pkg-resources (0.0.0)
setuptools (21.0.0)
wheel (0.29.0)
#You are using pip version 8.1.2, however version 18.0 is available.
#You should consider upgrading via the 'pip install --upgrade pip' command.
安装成功：
Installing collected packages: django
Successfully installed django-1.8.2
验证安装成功
(py3) python@ubuntu:~$ pip list
Package Version
------------- -------
Django 1.8.2
pip 18.0
pkg-resources 0.0.0
setuptools 21.0.0
wheel 0.29.0
创建一个项目：
django-admin startproject + projectName(项目名)
至此，我们在ubuntu环境下的django环境初步搭建完成，可以进行下一步的开发学习了。
