[Tutor] error message

[Kent Johnson]

mike viceano wrote:
> hello i wrote a litle program ware you pick a number and the computer
> guesses it and i recently decided to make it so it dosint reguess
> numbers but now i get a error message
> 
> here is the program
> 
> def number(number):
>    from random import randrange
>    guess=randrange(number*2)
>    print guess
>    guessed.append(guess)
>    guesses=1
>    guessed=[]
>    while guess !=number:
>        guess=randrage(number*2)
>        if guess not in guessed:
>            guessed.append(guess) #here is ware the problem is
>            guesses=guesses+1
>    print"i got the number",number,"number","in",guesses,"guesses"
> 
> and here is the error
> 
> Traceback (most recent call last):
> File "<pyshell#17>", line 1, in -toplevel-
>    guess.number(10)
> File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/guess.py",
> line 5, in number
>    guessed.append(guess)
> UnboundLocalError: local variable 'guessed' referenced before assignment

It pays to read the traceback carefully, this one is giving you a lot of 
good clues.

First, the error is at line 5. This is the *first* line with 
"guessed.append(guess)", not the one you have commented.

Second, the error message is that 'guessed' is referenced before 
assignment. Where is 'guessed' assigned? Two lines later, on line 7 with 
"guessed=[]"

Do you know how to fix it now?

Kent