[Python-ideas] Non-boolean return from __contains__

[Masklinn]

On 2010-07-27, at 18:25 , Robert Kern wrote:

> On 7/27/10 9:02 AM, Guido van Rossum wrote:
> 
>> Therefore I think the LINQ approach, which (IIUC) converts an
>> expression into a parse tree when certain syntax is encountered, and
>> calls a built-in method with that parse tree, would be a fresh breath
>> of air. No need deriding it just because Microsoft came up with it
>> first.
> 
> I've occasionally wished that we could repurpose backticks for expression literals:
> 
>  expr = `x + y*z`
>  assert isinstance(expr, ast.Expression)
> 
> And triple backticks for blocks of statements:
> 
>  block = ```
> try:
>    frobnicate()
> except FrobError:
>    print("Not on my watch!")
> ```
>  assert isinstance(block, ast.Module)
> 
> Too bad backticks look like grit on Tim's monitor!

What about french quotes

expr = «x + y * z»

block = «««
try:
    frobnicate()
except FrobError:
    print("Oh no you di'n't")
»»»
?

Or maybe some question marks?

expr = ¿x + y * z?