[docs] [issue20626] Manager documentation unclear about lists and thread safeness

[Zachary Ware]

Changes by Zachary Ware <zachary.ware at gmail.com>:


----------
stage:  -> needs patch
type:  -> enhancement
versions:  -Python 3.1, Python 3.2, Python 3.5

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20626>
_______________________________________