sublime Text 3 中，执行 python 代码无法输入

先安装 sublime REPL， 然后在用户自定义的键绑定中更新为以下代码：

[
    { "keys": ["super+shift+r"], "command": "repl_open",
                 "caption": "Python",
                 "mnemonic": "p",
                 "args": {
                    "type": "subprocess",
                    "encoding": "utf8",
                    "cmd": ["python", "-i", "-u", "$file"],
                    "cwd": "$file_path",
                    "syntax": "Packages/Python/Python.tmLanguage",
                    "external_id": "python"
                    }
    }
]