If I try to run this script receive this error:
AttributeError:'module' object has no attribute 'converti'

This is my code:

First.py
Code:
from key_codes import *
import keycapture
import appuifw,e32
import Second



def Exit():
Lock.signal()


def press_key(key):
testo=txt.get()
Second.converti(testo)



Lock=e32.Ao_lock()
appuifw.app.exit_handler=Exit

appuifw.app.menu=[(u"Esci",Exit)]



txt=appuifw.Text()
txt.focus=True
appuifw.app.body=txt


txt.set(u"PROVA")
capturer=keycapture.KeyCapturer(press_key)
capturer.keys=(EKeySelect,)
capturer.start()


Lock.wait()
Second.py

Code:
import string
import First


def converti(testo):
testo=string.lower(testo)
First.txt.set(unicode(testo))
what is wrong ?