Fix selftest telopt callback for Python 3.4

Python 3.4 is unable to handle formatted bytestrings. Replace two
occurrences in the Telnet option callback handler in the selftest
script to use concatenation operators instead.

diff --git a/mudpy/tests/selftest.py b/mudpy/tests/selftest.py
index 3b00b48..202778a 100644 (file)
--- a/mudpy/tests/selftest.py
+++ b/mudpy/tests/selftest.py
@@ -432,9 +432,9 @@ def option_callback(telnet_socket, command, option):
         # any response to avoid endlessly looping
         pass
     elif command in (telnetlib.DO, telnetlib.DONT):
-        telnet_socket.send(b"%s%s%s" % (telnetlib.IAC, telnetlib.WONT, option))
+        telnet_socket.send(telnetlib.IAC + telnetlib.WONT + option)
     elif command in (telnetlib.WILL, telnetlib.WONT):
-        telnet_socket.send(b"%s%s%s" % (telnetlib.IAC, telnetlib.DONT, option))
+        telnet_socket.send(telnetlib.IAC + telnetlib.DONT + option)
 
 
 def main():