it requires https://github.com/nickoala/telepot

nininini.py

#!/usr/bin/env python3                                                                                                                                                                            
# -*- coding: utf-8 -*-                                                           
                                                                                  
import sys                                                                        
import time                                                                       
import telepot                                                                    
import re                                                                         
                                                                                  
def handle(msg):                                                                  
  content_type, chat_type, chat_id = telepot.glance(msg)                          
  print(content_type, chat_type, chat_id)                                         
  re_cu = re.compile('cii', re.IGNORECASE)                                        
  re_qu = re.compile('qii', re.IGNORECASE)                                        
  re_vowel = re.compile('(a|á|ä|å|ë|é|ö|ó|e|o|u|ú|à|è|ò|ù)', re.IGNORECASE)       
                                                                                  
  if content_type == 'text':                                                      
    missigi = re_vowel.sub('i', msg['text'])                                      
    missigi = re_qu.sub('qui', missigi)                                           
    missigi = re_cu.sub('qui', missigi)                                           
    bot.sendMessage(chat_id, missigi)                                             
                                                                                  
TOKEN = sys.argv[1]                                                               
                                                                                  
bot = telepot.Bot(TOKEN)                                                          
bot.message_loop(handle)                                                          
print ('Listening ...')                                                           
                                                                                  
# Keep the program running.                                                       
while 1:                                                                       
  time.sleep(10)