Note ExitStack's new-style class requirement

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Nick Coghlan 2016-05-02 15:03:03 +10:00
parent 0433cd4844
commit 1fb0cf99cb

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@ -310,6 +310,10 @@ Functions and classes provided:
foundation for higher level context managers that manipulate the exit
stack in application specific ways.
Context managers used with :class:`ExitStack` must be new-style classes -
this is the default on Python 3, but requires explicitly inheriting from
:class:`object` or another new-style class in Python 2.
.. versionadded:: 0.4
Part of the standard library in Python 3.3 and later