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-rw-r--r--Doc/library/io.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 90573bd..2684b27 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -41,6 +41,11 @@ stream for text.
Argument names are not part of the specification, and only the arguments of
:func:`.open` are intended to be used as keyword arguments.
+.. seealso::
+ :mod:`sys`
+ Contains the standard IO streams: :data:`sys.stdin`, :data:`sys.stdout`,
+ and :data:`sys.stderr`.
+
Module Interface
----------------