On Thu, Jun 20, 2019 at 8:14 AM Andrew Barnert via Python-ideas
<python-ideas@python.org> wrote:
> … x = y would mean this:
>
> try:
> xval = globals()['x']
> result = xval.__iassign__(y)
> except (LookupErrorr, AttributeError):
> result = y
> globals()['x'] = result
>
> ...
> Notice that in my pseudocode above, I cheated—obviously the xval = and
> result = lines are not supposed to recursively call the same pseudocode, but
> to directly store a value in new temporary local variable.
>
I'm rather curious how this would behave in a class context. Consider
the following code:
num = 10; lst = [20, 30, 40]
class Spam:
num += 1
lst += [50]
print(num, lst, Spam.num, Spam.lst)
Do you know what this will do in current Python, and what is your
intention for this situation if we add a third name that uses the new
__iassign__ protocol?
ChrisA
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