Hi Steve Thank you for your reply.
We're discussing the abstract to PEP 505, which writes === The "None-aware attribute access" operator ?. ("maybe dot") evaluates the complete expression if the left hand side evaluates to a value that is not None === I gave (42).str as an example. I wrote > I don't see how to apply the prose in the abstract to this last > example. The left hand side is not None, so we "evaluate the complete > expression". On one reading, this is a recursion. You wrote > The phrasing could be clearer. I think the phrasing could be considerably improved (see below). > Since 42 is not None, it evaluates (42).str > [...] Based on this hint, here's what I think is a better statement. === Let `lhs` be the value of the left hand side, and RHS the code fragment on the right hand side. If `lhs` is None, then the whole expression is `None`. Otherwise, `lhs . RHS` gives the value of the whole expression. === Please would the experts tell me: Is it true? And if true, is it better? And can it be improved? -- Jonathan _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/