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Start your free trialAyanda Sithole
1,954 PointsI don't understand where I'm getting this wrong
Override the len method so that it always returns the wrong number of items in the list.
import random
class Liar(list):
def __len__(self):
super().__len__(self)
return self + bool(random.randint(-3, 3))
1 Answer
Steven Parker
231,198 PointsThe message "Bummer: TypeError: expected 0 arguments, got 1" is a clue that you're passing an argument to a method that doesn't take any. In this case, it's passing "self" to "__len__
", since the "self" parameter is handled internally and isn't passed explicitly.
Also, your return calculation doesn't make sense, it's attemptling combine a list (self) with a boolean. But what's needed here is simple since you only want to be sure to always give a wrong length. So you might just return the actual length (obtained with "super") with some value (constant, no need for anything random) added to it.