win10下sublime text3配置python3

按照书上在tools>build system>new build sysstem

输入“cmd”:["python3", "-u", "$file"],  运行出来的程序没有任何输出，

输入以下代码保持，就能运行正确，怎么回事？

"cmd": ["C:/Users/15495/AppData/Local/Programs/Python/Python39/python","-u","$file"],

    "file_regex":"^[ ]*File \"(...*?)\", line ([0-9]*)",

    "selector":"source.python",

    "env": {"PYTHONIOENCODING": "utf8"},

请看这个： https://blog.csdn.net/sinat_26692807/article/details/78577401