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-rw-r--r--Doc/conf.py2
-rw-r--r--Doc/library/collections.abc.rst12
2 files changed, 13 insertions, 1 deletions
diff --git a/Doc/conf.py b/Doc/conf.py
index 28dd80f859..20086a9c18 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -44,7 +44,7 @@ exclude_patterns = ['venv/*']
# -----------------------
# Use our custom theme.
-html_theme = 'pydoctheme'
+html_theme = 'classic'
html_theme_path = ['tools']
html_theme_options = {'collapsiblesidebar': True}
diff --git a/Doc/library/collections.abc.rst b/Doc/library/collections.abc.rst
index 0653d4e35c..dc2704ee5b 100644
--- a/Doc/library/collections.abc.rst
+++ b/Doc/library/collections.abc.rst
@@ -161,6 +161,12 @@ ABC Inherits from Abstract Methods Mixin
:term:`Coroutine` objects and instances of the
:class:`~collections.abc.Coroutine` ABC are all instances of this ABC.
+ .. note::
+ In CPython, generator-based coroutines are *awaitables*, even though
+ they do not have an :meth:`__await__` method. This ABC
+ implements an :meth:`~class.__instancecheck__` method to make them
+ instances of itself.
+
.. versionadded:: 3.5
.. class:: Coroutine
@@ -172,6 +178,12 @@ ABC Inherits from Abstract Methods Mixin
:meth:`__await__`. All :class:`Coroutine` instances are also instances of
:class:`Awaitable`. See also the definition of :term:`coroutine`.
+ .. note::
+ In CPython, generator-based coroutines are *awaitables* and *coroutines*,
+ even though they do not have an :meth:`__await__` method. This ABC
+ implements an :meth:`~class.__instancecheck__` method to make them
+ instances of itself.
+
.. versionadded:: 3.5
.. class:: AsyncIterable