Use the variable name _ for unused return values

test/functional/test_framework/socks5.py

@@ -91,7 +91,7 @@ class Socks5Connection(object):
                 self.conn.sendall(bytearray([0x01, 0x00]))
 
             # Read connect request
-            (ver,cmd,rsv,atyp) = recvall(self.conn, 4)
+            ver, cmd, _, atyp = recvall(self.conn, 4)
             if ver != 0x05:
                 raise IOError('Invalid socks version %i in connect request' % ver)
             if cmd != Command.CONNECT: