From ed9c0185d80514670244b0c2147958dea00159a9 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Thu, 15 Aug 2019 17:42:38 +1000
Subject: [PATCH] docs/library/sys: Add documentation for sys.atexit function.
---
docs/library/sys.rst | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/docs/library/sys.rst b/docs/library/sys.rst
index f2d96cb8c..aee2e54ee 100644
--- a/docs/library/sys.rst
+++ b/docs/library/sys.rst
@@ -15,6 +15,19 @@ Functions
function raise as `SystemExit` exception. If an argument is given, its
value given as an argument to `SystemExit`.
+.. function:: atexit(func)
+
+ Register *func* to be called upon termination. *func* must be a callable
+ that takes no arguments, or ``None`` to disable the call. The ``atexit``
+ function will return the previous value set by this function, which is
+ initially ``None``.
+
+ .. admonition:: Difference to CPython
+ :class: attention
+
+ This function is a MicroPython extension intended to provide similar
+ functionality to the :mod:`atexit` module in CPython.
+
.. function:: print_exception(exc, file=sys.stdout)
Print exception with a traceback to a file-like object *file* (or
--
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