sublime python3 输入换行不结束的方法

#!/usr/bin/python3 
str = input("请输入: ") 
print(str) 

[ 
{"keys": ["f5"],"command": "repl_open", 
"caption": "Python - RUN current file", 
"id": "repl_python_run", 
"mnemonic": "R", 
"args": { 
"type": "subprocess", 
"encoding": "utf8", 
"cmd": ["python", "-u", "$file_basename"], 
"cwd": "$file_path", 
"syntax": "Packages/Python/Python.tmLanguage", 
"external_id": "python", 
"extend_env": {"PYTHONIOENCODING": "utf-8"} 
} 
} 
]