[Tutor] Why thus?

[Gerrit Holl]

<quote name="Arthur Siegel" date="952860453" email="ajs@ix.netcom.com">
> Can't quite see what's happening here.
> 
> counter=0
> class Count:
>  def __init__(self):
>     print counter
> Count()
> 
> gets :
> 
> 0
> Process completed successfully
> 
> But:
> 
> counter=0
> class Count:
>  def __init__(self):
>   counter=counter+1
>   print counter
> Count()
> 
> gets:
> 
> Traceback (innermost last):
>   File "C:\temp\test.py", line 6, in ?
>     Count()
>   File "C:\temp\test.py", line 4, in __init__
>     counter=counter+1
> NameError: counter
> 
> Process completed with exit code 1
</quote>

Use the "global" statement, i.e. "global counter" within
__init__.

regards,
Gerrit.

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