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Radosław Kalina13,085 Points
Why you use cls.create(username=username...) ? Why do not use simple cls(username=username...)?
Alejandra Estefanía Aguilera Ávila6,865 Points
I think this is because cls refers to the class where we define create_user (which is User). Thanks to the @classmethod, you don't need to create an instance (which is what you would be doing with cls(username=username) ).
Hope this helps (: