Nick Coghlan added the comment:
Raymond's answer at http://bugs.python.org/issue19332#msg202287 still stands:
the checks for mutation while iterating are there primarily to *protect the
interpreter itself*, rather than to help detect bugs where the user code misses
some items because it mutate
Serhiy Storchaka added the comment:
It would be better discuss such ideas on python-ideas mailing list
(http://mail.python.org/mailman/listinfo/python-ideas).
Option 3 breaks existing code such as
for k, v in d.items():
if pred(k, v):
d[k] = newvalue
break
New submission from Aaron Brady:
Hi, I asked about the inconsistency of the "RuntimeError" being raised when
mutating a container while iterating over it here [1], "set and dict iteration"
on Aug 16, 2012.
[1] http://www.gossamer-threads.com/lists/python/python/1004659
I posted a patch on the
