[Python-projects] What is preferred way to indicate stub methods?

[Emin.shopper Martinian.shopper]

Dear Experts,

How do you indicate stub methods so pylint doesn't complain?

For example, I often define classes as shown below but get various pylint
warnings such as R0201 (method could be a function). I could disable the
appropriate warnings, but I'm wondering if there is a better way to define
such stub-methods.

class BaseClass:
  def __init__(self,member):
     self.member = member

 def double(self):
     "Sub-classes should override this to return a doubled version of
member."
     return NotImplemented
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