http://localhost:81/cgi-bin/hello.py Internal Server Error

系统:WIN7
Apache 已经配置启动成功

端口 81

http://localhost:81/   可以访问成功


按照网址配置Web服务器  http://www.runoob.com/python3/python3-cgi-programming.html
在浏览器中访问hello.py 显示错误

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at admin@example.com to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

为什么？