$ ./webserver.py & sleep 5 && nmap localhost -p 8000
[1] 16517

Starting nmap 3.75 ( http://www.insecure.org/nmap/ ) at 2007-03-20 13:14 CET
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 56903)
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/SocketServer.py", line 222, in handle_request
    self.process_request(request, client_address)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/SocketServer.py", line 241, in process_request
    self.finish_request(request, client_address)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/SocketServer.py", line 254, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/SocketServer.py", line 521, in __init__
    self.handle()
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/BaseHTTPServer.py", line 324, in handle
    self.handle_one_request()
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/BaseHTTPServer.py", line 307, in handle_one_request
    self.raw_requestline = self.rfile.readline()
  File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/socket.py", line 338, in readline
    data = self._sock.recv(self._rbufsize)
error: (54, 'Connection reset by peer')
----------------------------------------
Interesting ports on localhost (127.0.0.1):
PORT     STATE SERVICE
8000/tcp open  http-alt

Nmap run completed -- 1 IP address (1 host up) scanned in 0.159 seconds