On 2018-08-02 22:49, Eric Fahlgren wrote:
On Thu, Aug 2, 2018 at 1:22 PM MRAB <pyt...@mrabarnett.plus.com
<mailto:pyt...@mrabarnett.plus.com>> wrote:
> policy?.mangle_from_ ?? True
> True (??? since lhs is None?)
>
No, it's not 'policy.mangle_from_' that could be None, it's 'policy'
that could be None (i.e. there's no policy).
In my example, there is a policy, and the value of policy.mangle_from_
is set to None. Thus the above should be equivalent to this
>>> None ?? True
True
Unless, of course, I completely misunderstand the way the ?? operator
works. This is not the same as the original code, they are not
equivalent.
In the relevant code, is policy.mangle_from_ ever None?
_______________________________________________
Python-ideas mailing list
Python-ideas@python.org
https://mail.python.org/mailman/listinfo/python-ideas
Code of Conduct: http://python.org/psf/codeofconduct/
