1、安装package control 失败
通过最简单的自动安装 package control 失败（详见package control官网）.
报错展示：
File "./python3.3/urllib/request.py", line 1248, in do_open
........
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "./python3.3/urllib/request.py", line 156, in urlopen
.........
解决方式：显然自动安装已经不行，按照官网进行手动安装即可。
If for some reason the console installation instructions do not work for you (such as having a proxy on your network), perform the following steps to manually install Package Control:
- Click the Preferences > Browse Packages… menu
- Browse up a folder and then into the Installed Packages/folder
- Download Package Control.sublime-package and copy it into the Installed Packages/ directory
- Restart Sublime Text
2、不能进行package control:install package,以及后续插件安装
报错展示：
Package Control: Unable to download https://packagecontrol.io/channel_v3.jsonafter 3 attempts
Emmet: No need to update PyV8 Package Control: Skipping automatic upgrade, last run at 2019-02-26 18:03:18, next run at 2019-02-26 19:03:18 or after Package Control: Unable to download https://packagecontrol.io/channel_v3.jsonafter 3 attempts Unable to open /Users/yoowei/Library/Application Support/Sublime Text 3/Packages/Package Control/Package Control.sublime-settings Detected ASCII vs Undefined with 100% confidence 解决：详见https://github.com/wbond/package_control/issues/1408* 下载Package Control手动安装（详见第一个问题）
* *下载channel_v3.json，记事本打开，找到"schema_version": "3.0.0".把3.0.0改成2.0，保存
* 把channel_v3.json放到一个安全不会被删除的目录下。
* subline菜单栏中的prefrences->package setting->Package control->setting-user。在{}中加入
"channels":
[
"channel_v3的存放目录完整路径"
],
* 保存后，ctrl+shift+p,正常安装就成了。
之前安装失败原因：channel_v3.json被墙了，无法下载下来。