Ubuntu14.04:
菜单栏：Tools-Build System-New Build System
1 { 2 "cmd": ["python3", "-u", "$file"], 3 "path": "/usr/bin", 4 "file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)", 5 "selector": "source.python" 6 }
保存为：Python3.sublime-build
Tools-Build System选择新增加的Python3
Ubuntu下给Sublime Text 3添加用python3运行文件
原文：http://www.cnblogs.com/jakeyChen/p/4881991.html