error in tutorial for 3.0, section 9.3.3

[Michiel Overtoom]

Vincent writes:

 > you kinda expect MyClass to have counter in it.

Yeah, that makes sense. These instance variables are often initialized 
in the __init__ method:


class Counter(object):
     def __init__(self,initialvalue):
         self.value=initialvalue
     def inc(self):
         self.value+=1
     def dec(self):
         self.value-=1

beans=Counter(123)
beans.inc()
beans.inc()
beans.dec()
print beans.value

# the output of the program is: 124

Greetings,


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