Hello,
On Wed, 27 May 2020 20:45:15 +0200
Antoine Pitrou wrote:
[]
> > A recent attempt to collect known Python JITs/compilers:
> > https://github.com/pfalcon/awesome-python-compilers (well,
> > definitely more recent than
> > https://wiki.python.org/moin/PythonImplementations#Compilers). And
>
On 26/05/2020 07:09, Greg Ewing wrote:
Wild idea: Instead of sentinels, have a way of declaring optional
arguments with no default, and a way of conditionally assigning a
value to them if they are not bound.
E.g.
def order(eggs = 4, spam =):
spam ?= Spam()
Here the '?=' means "if
BTW, going back to the question of mutable defaults, it occurs to me
> that there is an "obvious" idiom for self-documenting sentinels for
> defaults that are deferred because you want a new instance each time
> the function is called: use the constructors! Here are some empty
> mutables:
>
>
