It came to my attention that: In the original PEP True and False are said to be singletons https://www.python.org/dev/peps/pep-0285/, but it's not in the Data Model https://docs.python.org/3/reference/datamodel.html
This came to my attention by code wanting to own the valid values in a dict's key: if settings[MY_KEY] is True: ... If True and False are singletons in the spec (and not only in the CPython implementation), it should be prominent and well known. Cheers, -- Juancarlo *Añez*
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