On 01/16/2017 11:05 PM, Steven D'Aprano wrote:
I wish to emulate a "final" class using Python, similar to bool:
py> class MyBool(bool):
... pass
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: type 'bool' is not an acceptable base type
It doesn't have to be absolutely bulletproof, but anyone wanting to subclass my
class should need to work for it, which hopefully will tell them that they're
doing something unsupported.
Any hints?
Use a metaclass. Have the metaclass create the first one, and refuse to make
any others.
--
~Ethan~
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