On 11 Nov 2020 19:21:57 GMT r...@zedat.fu-berlin.de (Stefan Ram) wrote: > In my Python course I gave the assignment to define a > counter class "Main" so that > > counter0 = Main() > counter1 = Main() > counter1.count(); counter1.count(); counter1.count() > counter1.count(); counter1.count() > print( counter0.value ) > print( counter1.value ) > > would print > > 0 > 5 > > . > > I expected this solution: > > class Main: > def __init__( self ): > self.value = 0 > def count( self ): > self.value += 1 > > but a student turned in the following solution: > > class Main: > value = 0 > def count(self): > self.value += 1 > > .
I am still a Python beginner and didn't even believe that the student's solution would work. I had expected an error as the instance variable self.value was not initialized. -- Manfred -- https://mail.python.org/mailman/listinfo/python-list
