instantiation

[AlinDavid]

I'n not an expert but i would like to know if there wasn't better to type the init method like this:

class Shape: def init(self, color=None): if color == None: self.color = "" else: self.color = color

since the input for color is expected to be a string type

[joeyajames]

Isn't this simpler, and does the same thing? class Shape: def init(self, color=''): self.color = color

[AlinDavid]

It is simpler but instantiating objects like that will maybe became troublesome because every instance will receive the same reference to the "" string.