Chris Angelico writes:
> On Wed, Jun 10, 2020 at 1:15 PM Stephen J. Turnbull
> <[email protected]> wrote:
> >
> > Executive summary:
> >
> > Dicts are unordered, so we can distinguish dict from set by the first
> > item (no new notation), and after that default identifiers to (name :
> > in-scope value) items.
>
> Be careful with this assumption. Python's dictionaries DO retain
> order,
Thank you for the reminder! I did forget that point.
> even if you can't easily talk about "the fifth element" [1], so
> anything that imposes requirements on the entry listed
> syntactically first may have consequences.
No requirements imposed! If iteration order matters and you want to
take advantage of abbreviation, you might have to write
d = {first : first, last, addr1, addr2, tel='123-456-789'}
but frequently it would just work naturally:
d = {first : first, last, addr1, addr2}
Admittedly this distinction may be even more subtle than grit on Tim's
screen, or randomizing the hash seed per process. And I suspect that
people who want this feature will prefer the d{} notation for
consistency inside the braces.
Steve
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