On Wed, Jul 5, 2017 at 10:14 PM, Peter Otten <__pete...@web.de> wrote: > Chris Angelico wrote: > >> You can be confident that a single assignment will happen atomically. >> Even if "self.cnt = i" requires multiple instructions to perform > > For name binding > > cnt = i > > maybe, but > > self.cnt = i > > can execute arbitrary Python code (think __setattr__()). With threads I'd > rather play it safe.
Sure, it _could_ execute arbitrary code, but the most likely case is that at its core, it's still going to execute a single assignment operation. And if it doesn't, then that's the place where you'd need the lock. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
