Asyncore data processing with Python 3

Question

I'm using asynchat and trying to use python3. getting this error:

    error: uncaptured python exception, closing channel <irc.IRC connected
    at 0x9a5286c> (<class 'AttributeError'>:'str' object has no attribute 
    'more' [/usr/lib/python3.2/asyncore.py|write|89] [/usr/lib/python3.2
    /asyncore.py|handle_write_event|462] [/usr/lib/python3.2asynchat.py|
    handle_write|194] [/usr/lib/python3.2/asynchat.py|initiate_send|245])

My code worked fine with Python 2.6.7.

Suggestions please?

UPDATE: I checked that I'm indeed using python3's asynchat.

    ~$ python3
    Python 3.2 (r32:88445, Mar 25 2011, 19:28:28) 
    [GCC 4.5.2] on linux2
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import asynchat
    >>> asynchat
    <module 'asynchat' from '/usr/lib/python3.2/asynchat.py'>
    >>> 

Answer 1

Per http://bugs.python.org/issue12523

Actually, the error is that in Python 3 you should use bytes objects when transmitting/receiving data over the network, not (unicode) strings. That is, replace '\r\n' with b'\r\n', etc.

Of course, the error message should be made less obscure.

Answer 2

The error seems to be raised in /usr/lib/python3.2/asynchat.py|initiate_send|245 .

def initiate_send(self):
    while self.producer_fifo and self.connected:
        first = self.producer_fifo[0]
        ...
        try:
            data = buffer(first, 0, obs)
        except TypeError:
            data = first.more() <--- here 

Seems like somebody put a string in self.producer_fifo instead of an asyncchat.simple_producer , which is the only class in async*.py with a more() method.