[Python-ideas] Non-boolean return from __contains__

Greg Ewing greg.ewing at canterbury.ac.nz
Wed Jul 28 03:27:39 CEST 2010

Bruce Leban wrote:

> Isn't there are already a syntax for this?
>     expr = lambda: x + y * z
> Maybe you want some conversion of that lambda into a different form:
>     expr = @ast lambda: x + y + z

If you need new syntax for this, then it's a sign that
there *isn't* already a syntax for what we want. Given
that we need new syntax anyway, there doesn't seem to
be any point in bothering with the lambda:

   expr = @ast: x + y + z

or any other suitable syntax.


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