Mac上安裝python3並設置SublimeREPL插件默認運行python3

1、安裝python3

$ brew search python
$ brew install python3

這里安裝完后不需要單獨添加環境變量，程序已經處理好，可以直接運行python3命令。

$ which python
/usr/bin/python

$ which python3
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3

$ echo $PATH
/Library/Frameworks/Python.framework/Versions/3.6/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

2、安裝REPL插件，並設置快捷鍵綁定。

打開后，搜索 SublimeREPL 安裝即可。

設置快捷鍵：

Preferences -> Key Bindings

[	
	{"keys":["f1"],
	"caption": "SublimeREPL: Python - RUN current file",
	"command": "run_existing_window_command", "args":
	{"id": "repl_python_run",
	"file": "config/Python/Main.sublime-menu"}},

	{"keys":["f2"],
	"caption": "SublimeREPL: Python",
	"command": "run_existing_window_command", "args":
	{"id": "repl_python",
	"file": "config/Python/Main.sublime-menu"}}
]

這里我設置的 F1 運行代碼，F2 打開終端。

3、按 F2 運行終端，發現默認集成的是 python2，手動改成 pyhton3，方法如下：

$ sudo find / -iname 'Main.sublime-menu'
$ vim /Users/keithtt/Library/Application\ Support/Sublime\ Text\ 3/Packages/SublimeREPL/config/Python/Main.sublime-menu

"cmd": ["python3", "-i", "-u"],
"cmd": ["python3", "-i", "-u", "-m", "pdb", "$file_basename"],
"cmd": ["python3", "-u", "$file_basename"],
"cmd": {
    "osx": ["python3", "-u", "${packages}/SublimeREPL/config/Python/ipy_repl.py"],
    "linux": ["python3", "-u", "${packages}/SublimeREPL/config/Python/ipy_repl.py"],
    "windows": ["python3", "-u", "${packages}/SublimeREPL/config/Python/ipy_repl.py"]
},

將該文件中調用 python 命令的地方全部改成 python3 即可。

改完之后再次按 F2 運行終端，效果如下：