Add an attribution to the Green Tree Snakes in the AST docs (GH-24727)

(cherry picked from commit 62e3b6370cf9aa990485d9c7c3ea3f6f150daa47)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 95cb017d145ca8f3e17c658daffd02250c2767ba..d13c7ef63850aef4b558455e1388f7812b0bf054 100644 (file)
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -139,6 +139,11 @@ Node classes
    In the meantime, instantiating them will return an instance of
    a different class.
 
+.. note::
+    The descriptions of the specific node classes displayed here
+    were initially adapted from the fantastic `Green Tree
+    Snakes <https://greentreesnakes.readthedocs.io/en/latest/>`__ project and
+    all its contributors.
 
 Literals
 ^^^^^^^^