[Python-ideas] Alternative spelling for list.append()

[Steven D'Aprano]

On Mon, Jun 18, 2018 at 05:07:45PM -0300, Joao S. O. Bueno wrote:

> a = [1,2, 3]
> a <<= 4
> resulting in a == [1, 2, 3, 4]  is quite readable

Not as readable as a.append(4), which works today and doesn't require 
the user to memorise the special case that <<= works on lists but 
(presumably) << doesn't.

Or perhaps it would. What would a bare << mean for lists?

b = a << 4

could mean the same as

b = a + [4]

but we already have a spelling for that, do we really need another one?



-- 
Steve