Fix minor bugs in python version

ls_echo.py

@@ -49,12 +49,9 @@ directory = os.path.abspath(os.path.expanduser(DIRECTORY))
 if not os.path.isdir(directory):
     raise TypeError("Path " + directory + " does not represent a valid directory.")
 
-def get_directory_listing():
-    return os.listdir("/home/lily/")
-
 class ThreadedRequestHandler(SocketServer.BaseRequestHandler):
     def handle(self):
-        response = "\n".join(os.listdir("/home/lily/"))
+        response = "\n".join(os.listdir(directory))
         self.request.send(response + "\n")
 
 class ThreadedTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
@@ -90,6 +87,6 @@ if __name__ == "__main__":
     lockfile.write('%s' %(os.getpid()))
     lockfile.flush()
 
-    server = ThreadedTCPServer(("localhost", port), ThreadedRequestHandler)
+    server = ThreadedTCPServer(("0.0.0.0", port), ThreadedRequestHandler)
 
     server.serve_forever()