[Python-ideas] True and False are singletons

Juancarlo Añez apalala at gmail.com
Mon Mar 18 07:13:31 EDT 2019


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*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-ideas/attachments/20190318/16182c99/attachment-0001.html>


More information about the Python-ideas mailing list