> I initialize them by putting None along all the fields
Actually you don't.
def initialize(self):
self.buttonmatrix=[]
self.statematrix=[]
self.bombmatrix=[]
3 empty lists, so far so good.
for i in range(self.fil):
aux=[]
for j in range(self.col):
aux.append(None)
a new list filled with None
self.buttonmatrix.append(aux)
self.bombmatrix.append(aux)
self.statematrix.append(aux)
THat same list inserted into all three lists, so they all point
at the same internal list of Nones. So when you change one,
you change all.
Try using aux[:] instead to take a copy of aux...
You could also use list comprehension instead of the loop/append:
aux = [None for i in range(self.col)]
HTH,
Alan G.
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