For binary methods, such as __add__, either do not implement or return
NotImplemented if the other operand/class is not supported.
For non-binary methods, simply do not define.
Except for subclasses when the super-class defines __hash__ and the
subclass is not hashable -- then set __hash__ to None.
Question:
Are there any other methods that should be set to None to tell the
run-time that the method is not supported? Or is this a general
mechanism for subclasses to declare any method is unsupported?
--
~Ethan~
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