Index: Lib/ftplib.py
===================================================================
--- Lib/ftplib.py	(revision 66513)
+++ Lib/ftplib.py	(working copy)
@@ -253,7 +253,7 @@
         port number.
         '''
         hbytes = host.split('.')
-        pbytes = [repr(port/256), repr(port%256)]
+        pbytes = [repr(int(port/256)), repr(int(port%256))]
         bytes = hbytes + pbytes
         cmd = 'PORT ' + ','.join(bytes)
         return self.voidcmd(cmd)