Math Is Fun Forum

simron

Real Member

Registered: 2006-10-07

Posts: 237

Python Variable Definition Troubles

HELP!
I'm trying to make a Mafiya game in Python, but have run into problems. Here's what I'm worried about:

import random

def Start():
    day = 0 #This variable definition should work...
    DayTime()
...

Here's what I get when I run it:

Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    Start()
  File "/Users/Rayment/Documents/Chase/games/Python/Mafiya!", line 5, in Start
    DayTime()
  File "/Users/Rayment/Documents/Chase/games/Python/Mafiya!", line 7, in DayTime
    day = day + 1;
UnboundLocalError: local variable 'day' referenced before assignment

I know that means that my variable definition is wrong, but it should be right. What gives?

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Linux FTW

simron

Real Member

Registered: 2006-10-07

Posts: 237

Re: Python Variable Definition Troubles

Sorry to double post, but I noticed that a Windows machine with the same installation of Python doesn't have a single problem.

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Linux FTW

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Python Variable Definition Troubles

Not a python programmer here, but it looks like day is declared locally instead of globally.  This means that it won't exist in other local routines.

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"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

simron

Real Member

Registered: 2006-10-07

Posts: 237

Re: Python Variable Definition Troubles

True, but that doesn't explain why it works on Windows, but not Mac.

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Linux FTW

Rick

Guest

Re: Python Variable Definition Troubles

El error tipo "<pyshell#4>"es por error de impresion...

cambia el

print variable

que estes ejecutando por:

print str(variable)

debe funcionar, ojala te sirva

Rick

Guest

Re: Python Variable Definition Troubles

sorry... wrong language:

the error "<pyshell#4>" points to a print variable error

instead of:

print variable

use:

print str(variable)

I hope it can helps