[issue8977] Globalize lonely augmented assignment

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

This seems evil to me, when you consider the effect of this patch on immutable types:

>>> A = 3
>>> def f():
...     A += 5
... 
>>> f()
>>> A
8

I find the possibility that a function can implicitly (i.e., without any 'global' declarations) mutate my global module constants... disturbing.

Anyway, such a fundamental change would need proper discussion;  the right place for that is the python-ideas mailing list rather than the tracker:

http://mail.python.org/mailman/listinfo/python-ideas

Note also that there's a moratorium on core language changes in effect at the moment, so the earliest this could change is Python 3.3.

I'm going to close this issue for now;  if the idea gets a good reception on python-ideas it can be reopened.

----------
nosy: +mark.dickinson
resolution:  -> rejected
status: open -> closed
versions: +Python 3.3 -Python 3.1

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8977>
_______________________________________