Fix variable name in dis documentation example (GH-109343)

BINARY_SUBSCR example erroneously uses two different names `key` and `index` to refer to the same variable. STORE_SUBSCR and DELETE_SUBSCR use only `key` in the same context. Changing `index` to `key` for consistency.

diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index 72e55cd81d42f6c8ba41150425d8737ac9c3c2e8..d087c7c1adc34db481f2f90ec7e5ef6ad76b9edb 100644 (file)
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -597,7 +597,7 @@ not have to be) the original ``STACK[-2]``.
 
       key = STACK.pop()
       container = STACK.pop()
-      STACK.append(container[index])
+      STACK.append(container[key])
 
 
 .. opcode:: STORE_SUBSCR