Hi Massimo, I've just been checking it. I think you need to change this...
Wiki __init__() This line: self.extra = self.extra or {} should be: self.extra = extra or {} --
Hi Massimo, I've just been checking it. I think you need to change this...
Wiki __init__() This line: self.extra = self.extra or {} should be: self.extra = extra or {} --