[Python-ideas] PEP 505: None-aware operators

[MRAB]

On 2018-07-19 14:26, Stephan Houben wrote:
> FWIW, I like ??
> 
> It is short and distinctive.
> There is prior art in this spelling in c#.
> It requires no new keyword, nor does it give new meaning to an existing one.
> 
> I understand why  ?[ needs to be spelled using only a single ?, but I am 
> afraid it will be used infrequently, and people will accidentally write
>   a??[x]
> which is legal but different.
> 
> I found the example code in the PEP using ?. and ?[ hard to read.
> ?? and ??= are compelling, though.
> 
> One more question: what does this do?
> 
> del x
> x ??= 42
> 
Well, what does this do?

del x
if x is None:
     x = 42

[snip]