Issue 25483: Add an opcode to make f-string formatting more robust.
diff --git a/Lib/opcode.py b/Lib/opcode.py
index 4c826a7..71ce672 100644
--- a/Lib/opcode.py
+++ b/Lib/opcode.py
@@ -214,4 +214,6 @@
 def_op('BUILD_TUPLE_UNPACK', 152)
 def_op('BUILD_SET_UNPACK', 153)
 
+def_op('FORMAT_VALUE', 155)
+
 del def_op, name_op, jrel_op, jabs_op