moo.py

import hexchat

__module_name__ = "moo"
__module_version__ = "1.1"
__module_description__ = "It moos"

def cb(word, word_eol, userdata):
	if(word[1]=="!moo"):
		channel = hexchat.get_info("channel")
		hexchat.command("MSG %s %s" %(channel, "moooo."))
	return hexchat.EAT_NONE

hexchat.hook_print("Channel Message", cb)
hexchat.hook_print("Your Message", cb)