Actually it is just one function.
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 574ee1d..e400273 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -600,7 +600,7 @@
 File Object Creation
 --------------------
 
-These functions create new :term:`file objects <file object>`.  (See also
+This function creates new :term:`file objects <file object>`.  (See also
 :func:`~os.open` for opening file descriptors.)