Note Jython 65226 (2.7.4 Jython)

Author: rocky

xdis/codetype/code20.py

@@ -30,11 +30,16 @@
         "co_cellvars": (tuple, list),
     }
 )
-# co_firstlineno added since 1.x
 
-# Early pyston 2.7 Code objects seem to be a subset of 2.0 code.
-# The fields it has are:
-#   co_argcount, co_filename, co_firstline, co_flag, co_name, co_varnames
+# Byte code that is JVM, e.g. Pyston and Jython do provide a subset
+# of Pythons code fields.
+# For pyston, the fields it has are:
+#   co_argcount, co_filename, co_firstline, co_flags, co_name, co_varnames
+#
+# For Jython the fields it has are:
+#   co_argcount, co_cellvars, co_filename, co_firstline, co_flags, co_freevars,
+#   co_name, co_nlocals, co_varnames
+#
 
 class Code2(Code15):
     """Class for a Python2 code object used when a Python 3 interpreter is

xdis/load.py

@@ -230,7 +230,7 @@ def load_module_from_file_object(
             else:
                 raise ImportError(f"Bad magic number: '{magic}'")
 
-        if magic_int in (2657, 22138):
+        if magic_int in (2657, 65226, 22138):
             version = magicint2version.get(magic_int, "")
             raise ImportError(f"Magic int {magic_int} ({version}) is not supported.")
 

xdis/magics.py

@@ -465,15 +465,19 @@ def __by_version(magic_versions: Dict[bytes, str]) -> dict:
 add_magic_from_int(12897, "3.12.0rust")  # RustPython 3.12.0
 add_magic_from_int(12641, "3.13.0rust")  # RustPython 3.13.0
 
-# NOTE: This is JVM bytecode not Python bytecode
+# Graal uses JVM bytecode, not Python bytecode
 add_magic_from_int(21150, "3.8.5Graal")
 
 # Graal Java 21.0.2
 add_magic_from_int(21280, "3.10.8Graal")
 add_magic_from_int(21290, "3.11.7Graal")
 
 
-add_magic_from_int(1011, "2.7.1b3Jython")  # jython
+# Jython uses JVM bytecode, not Python bytecode.
+add_magic_from_int(1011, "2.7.1b3Jython")  # Jython 2.7.2b3
+add_magic_from_int(65226, "2.7.4Jython")  # Jython 2.7.4
+
+# Pyston
 add_magic_from_int(22138, "2.7.7Pyston")  # 2.7.8pyston, pyston-0.6.0
 
 magics = __by_version(versions)