[Tutor] Blackjack Betting

[Andre Engels]

On Fri, Jul 1, 2011 at 9:29 AM, Vincent Balmori <vincentbalmori at yahoo.com>wrote:

>
> Here is the other one that occurs when I lose
>
> Traceback (most recent call last):
>  File
>
> "/Users/vincentbalmori/Desktop/Python/py3e_source/chapter09/blackjackbetting.py",
> line 240, in <module>
>    main()
>  File
>
> "/Users/vincentbalmori/Desktop/Python/py3e_source/chapter09/blackjackbetting.py",
> line 236, in main
>    game.play()
>  File
>
> "/Users/vincentbalmori/Desktop/Python/py3e_source/chapter09/blackjackbetting.py",
> line 211, in play
>    player.lose()
>   File
>
> "/Users/vincentbalmori/Desktop/Python/py3e_source/chapter09/blackjackbetting.py",
> line 124, in lose
>    bet.stash -= bet.wager
> NameError: global name 'bet' is not defined
>

That error message is really quite expressive, it would much more help you
to learn to read it yourself than to run to us every time something goes
wrong. The most interesting part of an error message are its last few lines,
they say what went wrong, and where it happened. The rest tells you how it
got there, which also is important to know sometimes, but many errors can
already be solved without looking at it.

In this case, the error message says:

NameError: global name 'bet' is not defined

That means, at some time at the program, it is told to do something with
'bet', but there is no variable bet. And when does that happen? That too is
told: at line 124, which says:

bet.stash -= bet.wager

Go to that line and read your code yourself - what is this 'bet' of which
the stash is to be lessened by its wager? Have you told your program that
this is the value of the variable 'bet'? Where and how?

-- 
André Engels, andreengels at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20110701/98d1851e/attachment-0001.html>