def make_table_from_classe(self, cl, la) :
ln = [line[0] for line in self.classes if line[1] == cl]
out = [['0' for col in la] for line in ln]
def make_table_from_classe(self, cl, la) :
ln = [line[0] for line in self.classes if line[1] == cl]
out = [['0' for col in la] for line in ln]