The super class should be called with the enclosing class as its first argument and self as its second argument.

Passing a different class may work correctly, provided the class passed is a super class of the enclosing class and the enclosing class does not define an __init__ method. However, this may result in incorrect object initialization if the enclosing class is later subclassed using multiple inheritance.

Ensure that the first argument to super() is the enclosing class.

In this example the call to super(Vehicle, self) in Car.__init__ is incorrect as it passes Vehicle rather than Car as the first argument to super. As a result, super(SportsCar, self).__init__() in the SportsCar.__init__ method will not call all __init__() methods because the call to super(Vehicle, self).__init__() skips StatusSymbol.__init__().

  • Python Standard Library: super.
  • Artima Developer: Things to Know About Python Super.
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