transform list of int in a list of string??

[jubafre at brturbo.com]

my program have other modules imported, like re and sre and i put a convertion int to str but doesn´t work
t=str(x[i])
Traceback (most recent call last):
  File "C:\Documents and Settings\jubafre\Desktop\montador\teste.py", line 78, in ?
    t=str(x[i])
TypeError: 'list' object is not callable

Why i can´t transform a int number in string in my program???
I tryed with import string, and can´t too, 
but if i start a new python shell it works, why??

python shell
>>> x=[1,2,3,4,]
>>> s=[]
>>> for i in range(len(x)):
	t=str(x[i])
	s.append(t)
>>> print s
['1', '2', '3', '4']



Juliano Freitas
www.gebrasil.hpg.com.br