[3.12] gh-128017: Make a note that sys variables are read-only (GH-128887) (#128909)

miss-islington · srinivasreddy · web-flow · commit 1c85f1bc4424 · 2025-01-16T10:23:48.000Z
gh-128017: Make a note that sys variables are read-only (GH-128887) (cherry picked from commit 313b96e) Co-authored-by: Srinivas Reddy Thatiparthy (తాటిపర్తి శ్రీనివాస్ రెడ్డి) <thatiparthysreenivas@gmail.com>
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
@@ -8,7 +8,7 @@
 
 This module provides access to some variables used or maintained by the
 interpreter and to functions that interact strongly with the interpreter. It is
-always available.
+always available. Unless explicitly noted otherwise, all variables are read-only.
 
 
 .. data:: abiflags
