I am trying to run the following python server under windows:
\"\"\"
An echo server that uses select to handle multiple clients at a time.
Entering any line
I don't know if your code has other problems, but the error you're getting is because of passing input to select.select(), the problem is that it contains sys.stdin which is not a socket. Under Windows, select only works with sockets.
As a side note, input is a python function, it's not a good idea to use it as a variable.