Remove pattern "except:"

[eYemZ]

This caught anything not only Exception.  http://docs.python.org/howto/doanddont.html#except

find . -iname '*.py' -exec sed -i 's/except:/except Exception:/g' {} \;

# Import from the standard library
from logging import debug
from sys import exit

# Import from twisted
from twisted.internet import reactor
from twisted.names.srvconnect import SRVConnector
from twisted.words.protocols.jabber import xmlstream, client, jid
from twisted.words.xish import domish

# Import from here
from utils import get_template



class XMPPClientConnector(SRVConnector):

    def __init__(self, reactor, domain, factory):
        SRVConnector.__init__(self, reactor, 'xmpp-client', domain, factory)


    def pickServer(self):
        host, port = SRVConnector.pickServer(self)

        if not self.servers and not self.orderedServers:
            # no SRV record, fall back..
            port = 5222

        return host, port



class XMPPSession(object):

    resource = 'SharingShell'

    def __init__(self, client_jid, password):
        debug('jid: "%s" password: "%s"' % (client_jid, len(password) * '*'))

        client_jid = '%s/%s' % (client_jid, self.resource)
        self.jid = jid.JID(client_jid, password)
        session = client.XMPPClientFactory(self.jid, password)

        session.addBootstrap(xmlstream.STREAM_CONNECTED_EVENT, self.connected)
        session.addBootstrap(xmlstream.STREAM_END_EVENT, self.disconnected)
        session.addBootstrap(xmlstream.STREAM_AUTHD_EVENT, self.authenticated)
        session.addBootstrap(xmlstream.INIT_FAILED_EVENT, self.init_failed)

        connector = XMPPClientConnector(reactor, self.jid.host, session)
        connector.connect()


    def connected(self, message):
        debug('Connected')


    def disconnected(self, message):
        debug('Disconnected')


    def authenticated(self, stream):
        debug('Authenticated')
        self.xmpp_stream = stream
        presence = domish.Element((None, 'presence'))
        self.xmpp_stream.send(presence)

        # Warn the contact when he try to speak to the bot client
        self.xmpp_stream.addObserver('/message/body', self.warn_contact)


    def init_failed(self, failure):
        debug("Initialization failed.")
        print failure
        ###########################################################
        # exit is caught by "except:"
        exit(3)
        ###########################################################


    def warn_contact(self, message):
        warn_template = get_template('warn.xml')
        namespace = {'contact': message['from'],
                     'jid': self.jid}
        warn_message = warn_template.render_unicode(**namespace)
        self.xmpp_stream.send(warn_message)


    def run(self):
        reactor.run()

[therve]

Global changes like that are unlikely to happen. If you want to remove bare excepts from specific places, specific bugs should be open.

Regarding your script, reactor.stop() is the right thing to call.