我把f5设置为python3的，f4是python2的
Preferences–>key bindings

[
    {
        "keys": ["f5"],
        "caption": "SublimeREPL: Python - RUN current file",
        "command": "run_existing_window_command",
        "args": {
            "id": "repl_python_run",
            "file": "config/Python/Main.sublime-menu"
        }
    },

    {
    	"keys":["f4"], 
		"caption": "SublimeREPL: Python2 - RUN current fil", 
		"command": "run_existing_window_command",
		"args": { 
			"id": "repl_python2_run", 
			"file": "config/Python2/Main.sublime-menu" 
		}
	} 
]

这只是设置快捷键，因为之前先安装了python3，所以运行的时候还要弄一个python2的便宜窗口

preferences–>Browse package
进到\SublimeREPL\config
本来有的是python，复制一份改为python2(如果你是给python3的可以改成python3)
最后会在tools–>sulimbeREPL里面显示
进到python2，修改Main.sublime-menu
将里面的的python改成python2，所有的，不管大小写
除了"syntax": "Packages/python/python.tmLanguage"

可以用“查找\替换”，把里面的python换成python2

[
     {
        "id": "tools",
        "children":
        [{
            "caption": "SublimeREPL",
            "mnemonic": "R",
            "id": "SublimeREPL",
            "children":
            [
                {"caption": "python2",
                "id": "python2",

                 "children":[
                    {"command": "repl_open",
                     "caption": "python2",
                     "id": "repl_python2",
                     "mnemonic": "P",
                     "args": {
                        "type": "subprocess",
                        "encoding": "utf8",
                        "cmd": ["python2", "-i", "-u"],
                        "cwd": "$file_path",
                        "syntax": "Packages/python/python.tmLanguage",
                        "external_id": "python2",
                        "extend_env": {"python2IOENCODING": "utf-8"}
                        }
                    },
                    {"command": "python2_virtualenv_repl",
                     "id": "python2_virtualenv_repl",
                     "caption": "python2 - virtualenv"},
                    {"command": "repl_open",
                     "caption": "python2 - PDB current file",
                     "id": "repl_python2_pdb",
                     "mnemonic": "D",
                     "args": {
                        "type": "subprocess",
                        "encoding": "utf8",
                        "cmd": ["python2", "-i", "-u", "-m", "pdb", "$file_basename"],
                        "cwd": "$file_path",
                        "syntax": "Packages/python/python.tmLanguage",
                        "external_id": "python2",
                        "extend_env": {"python2IOENCODING": "utf-8"}
                        }
                    },
                    {"command": "repl_open",
                     "caption": "python2 - RUN current file",
                     "id": "repl_python2_run",
                     "mnemonic": "R",
                     "args": {
                        "type": "subprocess",
                        "encoding": "utf8",
                        "cmd": ["python2", "-u", "$file_basename"],
                        "cwd": "$file_path",
                        "syntax": "Packages/python/python.tmLanguage",
                        "external_id": "python2",
                        "extend_env": {"python2IOENCODING": "utf-8"}
                        }
                    },
                    {"command": "repl_open",
                     "caption": "python2 - Ipython2",
                     "id": "repl_python2_ipython2",
                     "mnemonic": "I",
                     "args": {
                        "type": "subprocess",
                        "encoding": "utf8",
                        "autocomplete_server": true,
                        "cmd": {
                            "osx": ["python2", "-u", "${packages}/SublimeREPL/config/python2/ipy_repl.py"],
                            "linux": ["python2", "-u", "${packages}/SublimeREPL/config/python2/ipy_repl.py"],
                            "windows": ["python2", "-u", "${packages}/SublimeREPL/config/python2/ipy_repl.py"]
                        },
                        "cwd": "$file_path",
                        "syntax": "Packages/python/python.tmLanguage",
                        "external_id": "python2",
                        "extend_env": {
                            "python2IOENCODING": "utf-8",
                            "SUBLIMEREPL_EDITOR": "$editor"
                        }
                    }
                    }
                ]}
            ]
        }]
    }
]

python2

python3