Doc: Improve description of GET_LEN opcode (#114583)

Eclips4 · web-flow · commit e8773e59a835 · 2024-10-08T17:55:40.000+05:30
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
@@ -969,7 +969,8 @@ iterations of the loop.
 
 .. opcode:: GET_LEN
 
-   Perform ``STACK.append(len(STACK[-1]))``.
+   Perform ``STACK.append(len(STACK[-1]))``. Used in :keyword:`match` statements where
+   comparison with structure of pattern is needed.
 
    .. versionadded:: 3.10
 
