anti-spam for Skype

SkypeAntiSpam.pyw

import Skype4Py
from time import sleep
skype = Skype4Py.Skype()
TRYING = 1
TEXT = {
	'QUESTION':"Hello. It's antispam bot. Answer, 2+2=? One figure, please. You have %i trying." % (TRYING),
	'ANSWER':"4",
	'WIN':"Right. I'll write you soon.",
	'AGAIN':"Try one more time.",
	'FAIL':"Autoignoring.",
	'INSTANT_BAN':"Autoignoring due to banned word in the authorization request or in the name."
}
BANNED = {
	'WORDS':("http", "www"),
	'NAMES':("Katherine Knox", "Shalonda POWELL", "Krysta MYERS", "Vicky GILLIAM", "Vonni Binford", "Cloris Mayr")
}
HIDE_MESSAGES_AFTER_WRONG_ANSWER = True  # True may cause loss of the new answers
REFRESH_DELAY = 30  # in seconds
GET_NAME_DELAY = 1.5
queue = {}

def answer_received(msg, status):
	username = msg._GetSender()._GetHandle()
	if username in queue.keys():
		if status==Skype4Py.cmsReceived:
			if msg._GetBody()!=TEXT['ANSWER']:
				if HIDE_MESSAGES_AFTER_WRONG_ANSWER:
					skype.UnregisterEventHandler('MessageStatus', answer_received)
					for eachMsg in msg._GetChat()._GetRecentMessages():
						try:
							eachMsg.MarkAsSeen()
						except:
							continue
					skype.RegisterEventHandler('MessageStatus', answer_received)
				queue[username] = queue[username]-1
				if queue[username]:
					skype.SendMessage(username, TEXT['AGAIN'])
					return
				else:
					del queue[username]
					skype.SendMessage(username, TEXT['FAIL'])
					msg._GetSender()._SetIsBlocked(True)
			else:
				del queue[username]
				skype.SendMessage(username, TEXT['WIN'])
			if len(queue)==0:
				skype.UnregisterEventHandler('MessageStatus', answer_received)

def hasBanned(txtstr, target):
	for word in BANNED[target]:
		if word in txtstr:
			return True
	return False

def auth_received(from_user):
	newUsers = skype._GetUsersWaitingAuthorization()
	if not newUsers:
		for key in queue.keys():
			del queue[key]
		return
	for user in newUsers:
		username = user._GetHandle()
		if not (username in queue.keys()):
			if TRYING < 1:
				skype.SendMessage(username, TEXT['FAIL'])
				user._SetIsBlocked(True)
				continue
			if hasBanned(user._GetReceivedAuthRequest(), 'WORDS'):
				skype.SendMessage(username, TEXT['INSTANT_BAN'])
				user._SetIsBlocked(True)
				continue
			skype.RegisterEventHandler('MessageStatus', answer_received)
			skype.SendMessage(username, TEXT['QUESTION'])
			queue[username] = TRYING
			sleep(GET_NAME_DELAY)
			if hasBanned(user._GetFullName(), 'NAMES'):  # Skype's bug: full name is available only after message sending
				del queue[username]
				skype.SendMessage(username, TEXT['INSTANT_BAN'])
				user._SetIsBlocked(True)
				if len(queue)==0:
					skype.UnregisterEventHandler('MessageStatus', answer_received)
				continue

skype.RegisterEventHandler('UserAuthorizationRequestReceived', auth_received)
while True:
	skype.Attach()
	auth_received(None)
	sleep(REFRESH_DELAY)

does this work for groups?