Python pickle.NEWOBJ Examples

The following are 25 code examples for showing how to use pickle.NEWOBJ(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: ironpython2   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 6 votes vote down vote up
def test_newobj_proxies(self):
        # NEWOBJ should use the __class__ rather than the raw type
        import weakref
        classes = myclasses[:]
        # Cannot create weakproxies to these classes
        for c in (MyInt, MyLong, MyStr, MyTuple):
            classes.remove(c)
        for proto in protocols:
            for C in classes:
                B = C.__base__
                x = C(C.sample)
                x.foo = 42
                p = weakref.proxy(x)
                s = self.dumps(p, proto)
                y = self.loads(s)
                self.assertEqual(type(y), type(x))  # rather than type(p)
                detail = (proto, C, B, x, y, type(y))
                self.assertEqual(B(x), B(y), detail)
                self.assertEqual(x.__dict__, y.__dict__, detail)

    # Register a type with copy_reg, with extension code extcode.  Pickle
    # an object of that type.  Check that the resulting pickle uses opcode
    # (EXT[124]) under proto 2, and not in proto 1. 
Example 2
Project: Fluid-Designer   Author: Microvellum   File: pickletester.py    License: GNU General Public License v3.0 6 votes vote down vote up
def test_newobj_proxies(self):
        # NEWOBJ should use the __class__ rather than the raw type
        classes = myclasses[:]
        # Cannot create weakproxies to these classes
        for c in (MyInt, MyTuple):
            classes.remove(c)
        for proto in protocols:
            for C in classes:
                B = C.__base__
                x = C(C.sample)
                x.foo = 42
                p = weakref.proxy(x)
                s = self.dumps(p, proto)
                y = self.loads(s)
                self.assertEqual(type(y), type(x))  # rather than type(p)
                detail = (proto, C, B, x, y, type(y))
                self.assertEqual(B(x), B(y), detail)
                self.assertEqual(x.__dict__, y.__dict__, detail) 
Example 3
Project: Fluid-Designer   Author: Microvellum   File: pickletester.py    License: GNU General Public License v3.0 6 votes vote down vote up
def test_complex_newobj(self):
        x = ComplexNewObj.__new__(ComplexNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            with self.subTest(proto=proto):
                s = self.dumps(x, proto)
                if proto < 1:
                    self.assertIn(b'\nL64206', s)  # LONG
                elif proto < 2:
                    self.assertIn(b'M\xce\xfa', s)  # BININT2
                elif proto < 4:
                    self.assertIn(b'X\x04\x00\x00\x00FACE', s)  # BINUNICODE
                else:
                    self.assertIn(b'\x8c\x04FACE', s)  # SHORT_BINUNICODE
                self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
                                 2 <= proto)
                self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s))
                y = self.loads(s)   # will raise TypeError if __init__ called
                self.assert_is_copy(x, y) 
Example 4
Project: Fluid-Designer   Author: Microvellum   File: pickletester.py    License: GNU General Public License v3.0 6 votes vote down vote up
def test_complex_newobj_ex(self):
        x = ComplexNewObjEx.__new__(ComplexNewObjEx, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            with self.subTest(proto=proto):
                if 2 <= proto < 4:
                    self.assertRaises(ValueError, self.dumps, x, proto)
                    continue
                s = self.dumps(x, proto)
                if proto < 1:
                    self.assertIn(b'\nL64206', s)  # LONG
                elif proto < 2:
                    self.assertIn(b'M\xce\xfa', s)  # BININT2
                else:
                    assert proto >= 4
                    self.assertIn(b'\x8c\x04FACE', s)  # SHORT_BINUNICODE
                self.assertFalse(opcode_in_pickle(pickle.NEWOBJ, s))
                self.assertEqual(opcode_in_pickle(pickle.NEWOBJ_EX, s),
                                 4 <= proto)
                y = self.loads(s)   # will raise TypeError if __init__ called
                self.assert_is_copy(x, y) 
Example 5
Project: ironpython3   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 6 votes vote down vote up
def test_newobj_proxies(self):
        # NEWOBJ should use the __class__ rather than the raw type
        classes = myclasses[:]
        # Cannot create weakproxies to these classes
        for c in (MyInt, MyTuple):
            classes.remove(c)
        for proto in protocols:
            for C in classes:
                B = C.__base__
                x = C(C.sample)
                x.foo = 42
                p = weakref.proxy(x)
                s = self.dumps(p, proto)
                y = self.loads(s)
                self.assertEqual(type(y), type(x))  # rather than type(p)
                detail = (proto, C, B, x, y, type(y))
                self.assertEqual(B(x), B(y), detail)
                self.assertEqual(x.__dict__, y.__dict__, detail) 
Example 6
def test_newobj_proxies(self):
        # NEWOBJ should use the __class__ rather than the raw type
        classes = myclasses[:]
        # Cannot create weakproxies to these classes
        for c in (MyInt, MyTuple):
            classes.remove(c)
        for proto in protocols:
            for C in classes:
                B = C.__base__
                x = C(C.sample)
                x.foo = 42
                p = weakref.proxy(x)
                s = self.dumps(p, proto)
                y = self.loads(s)
                self.assertEqual(type(y), type(x))  # rather than type(p)
                detail = (proto, C, B, x, y, type(y))
                self.assertEqual(B(x), B(y), detail)
                self.assertEqual(x.__dict__, y.__dict__, detail) 
Example 7
def test_complex_newobj(self):
        x = ComplexNewObj.__new__(ComplexNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            with self.subTest(proto=proto):
                s = self.dumps(x, proto)
                if proto < 1:
                    self.assertIn(b'\nL64206', s)  # LONG
                elif proto < 2:
                    self.assertIn(b'M\xce\xfa', s)  # BININT2
                elif proto < 4:
                    self.assertIn(b'X\x04\x00\x00\x00FACE', s)  # BINUNICODE
                else:
                    self.assertIn(b'\x8c\x04FACE', s)  # SHORT_BINUNICODE
                self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
                                 2 <= proto)
                self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s))
                y = self.loads(s)   # will raise TypeError if __init__ called
                self.assert_is_copy(x, y) 
Example 8
Project: ironpython2   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_bad_stack(self):
        badpickles = [
            '.',                        # STOP
            '0',                        # POP
            '1',                        # POP_MARK
            '2',                        # DUP
            # '(2',                     # PyUnpickler doesn't raise
            'R',                        # REDUCE
            ')R',
            'a',                        # APPEND
            'Na',
            'b',                        # BUILD
            'Nb',
            'd',                        # DICT
            'e',                        # APPENDS
            # '(e',                     # PyUnpickler raises AttributeError
            'i__builtin__\nlist\n',     # INST
            'l',                        # LIST
            'o',                        # OBJ
            '(o',
            'p1\n',                     # PUT
            'q\x00',                    # BINPUT
            'r\x00\x00\x00\x00',        # LONG_BINPUT
            's',                        # SETITEM
            'Ns',
            'NNs',
            't',                        # TUPLE
            'u',                        # SETITEMS
            # '(u',                     # PyUnpickler doesn't raise
            '}(Nu',
            '\x81',                     # NEWOBJ
            ')\x81',
            '\x85',                     # TUPLE1
            '\x86',                     # TUPLE2
            'N\x86',
            '\x87',                     # TUPLE3
            'N\x87',
            'NN\x87',
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_stack_errors, p) 
Example 9
Project: ironpython2   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_bad_mark(self):
        badpickles = [
            # 'N(.',                      # STOP
            'N(2',                      # DUP
            'c__builtin__\nlist\n)(R',  # REDUCE
            'c__builtin__\nlist\n()R',
            ']N(a',                     # APPEND
                                        # BUILD
            'c__builtin__\nValueError\n)R}(b',
            'c__builtin__\nValueError\n)R(}b',
            '(Nd',                      # DICT
            'N(p1\n',                   # PUT
            'N(q\x00',                  # BINPUT
            'N(r\x00\x00\x00\x00',      # LONG_BINPUT
            '}NN(s',                    # SETITEM
            '}N(Ns',
            '}(NNs',
            '}((u',                     # SETITEMS
                                        # NEWOBJ
            'c__builtin__\nlist\n)(\x81',
            'c__builtin__\nlist\n()\x81',
            'N(\x85',                   # TUPLE1
            'NN(\x86',                  # TUPLE2
            'N(N\x86',
            'NNN(\x87',                 # TUPLE3
            'NN(N\x87',
            'N(NN\x87',
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_mark_errors, p) 
Example 10
Project: ironpython2   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = SimpleNewObj.__new__(SimpleNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            if proto < 1:
                self.assertIn('\nI64206', s)  # INT
            else:
                self.assertIn('M\xce\xfa', s)  # BININT2
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 11
Project: ironpython2   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_complex_newobj(self):
        x = ComplexNewObj.__new__(ComplexNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            if proto < 1:
                self.assertIn('\nI64206', s)  # INT
            elif proto < 2:
                self.assertIn('M\xce\xfa', s)  # BININT2
            else:
                self.assertIn('U\x04FACE', s)  # SHORT_BINSTRING
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 12
Project: BinderFilter   Author: dxwu   File: pickletester.py    License: MIT License 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 13
Project: oss-ftp   Author: aliyun   File: pickletester.py    License: MIT License 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 14
Project: Fluid-Designer   Author: Microvellum   File: pickletester.py    License: GNU General Public License v3.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = SimpleNewObj.__new__(SimpleNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            with self.subTest(proto=proto):
                s = self.dumps(x, proto)
                if proto < 1:
                    self.assertIn(b'\nL64206', s)  # LONG
                else:
                    self.assertIn(b'M\xce\xfa', s)  # BININT2
                self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
                                 2 <= proto)
                self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s))
                y = self.loads(s)   # will raise TypeError if __init__ called
                self.assert_is_copy(x, y) 
Example 15
Project: ironpython3   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_bad_mark(self):
        badpickles = [
            # b'N(.',                     # STOP
            b'N(2',                     # DUP
            b'cbuiltins\nlist\n)(R',    # REDUCE
            b'cbuiltins\nlist\n()R',
            b']N(a',                    # APPEND
                                        # BUILD
            b'cbuiltins\nValueError\n)R}(b',
            b'cbuiltins\nValueError\n)R(}b',
            b'(Nd',                     # DICT
            b'N(p1\n',                  # PUT
            b'N(q\x00',                 # BINPUT
            b'N(r\x00\x00\x00\x00',     # LONG_BINPUT
            b'}NN(s',                   # SETITEM
            b'}N(Ns',
            b'}(NNs',
            b'}((u',                    # SETITEMS
            b'cbuiltins\nlist\n)(\x81', # NEWOBJ
            b'cbuiltins\nlist\n()\x81',
            b'N(\x85',                  # TUPLE1
            b'NN(\x86',                 # TUPLE2
            b'N(N\x86',
            b'NNN(\x87',                # TUPLE3
            b'NN(N\x87',
            b'N(NN\x87',
            b']((\x90',                 # ADDITEMS
                                        # NEWOBJ_EX
            b'cbuiltins\nlist\n)}(\x92',
            b'cbuiltins\nlist\n)(}\x92',
            b'cbuiltins\nlist\n()}\x92',
                                        # STACK_GLOBAL
            b'Vbuiltins\n(Vlist\n\x93',
            b'Vbuiltins\nVlist\n(\x93',
            b'N(\x94',                  # MEMOIZE
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_mark_errors, p) 
Example 16
Project: ironpython3   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
                             2 <= proto < 4)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ_EX, s),
                             proto >= 4)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assert_is_copy(x, y) 
Example 17
Project: gcblue   Author: gcblue   File: pickletester.py    License: BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 18
def test_bad_mark(self):
        badpickles = [
            # b'N(.',                     # STOP
            b'N(2',                     # DUP
            b'cbuiltins\nlist\n)(R',    # REDUCE
            b'cbuiltins\nlist\n()R',
            b']N(a',                    # APPEND
                                        # BUILD
            b'cbuiltins\nValueError\n)R}(b',
            b'cbuiltins\nValueError\n)R(}b',
            b'(Nd',                     # DICT
            b'N(p1\n',                  # PUT
            b'N(q\x00',                 # BINPUT
            b'N(r\x00\x00\x00\x00',     # LONG_BINPUT
            b'}NN(s',                   # SETITEM
            b'}N(Ns',
            b'}(NNs',
            b'}((u',                    # SETITEMS
            b'cbuiltins\nlist\n)(\x81', # NEWOBJ
            b'cbuiltins\nlist\n()\x81',
            b'N(\x85',                  # TUPLE1
            b'NN(\x86',                 # TUPLE2
            b'N(N\x86',
            b'NNN(\x87',                # TUPLE3
            b'NN(N\x87',
            b'N(NN\x87',
            b']((\x90',                 # ADDITEMS
                                        # NEWOBJ_EX
            b'cbuiltins\nlist\n)}(\x92',
            b'cbuiltins\nlist\n)(}\x92',
            b'cbuiltins\nlist\n()}\x92',
                                        # STACK_GLOBAL
            b'Vbuiltins\n(Vlist\n\x93',
            b'Vbuiltins\nVlist\n(\x93',
            b'N(\x94',                  # MEMOIZE
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_mark_errors, p) 
Example 19
def test_simple_newobj(self):
        x = SimpleNewObj.__new__(SimpleNewObj, 0xface)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            with self.subTest(proto=proto):
                s = self.dumps(x, proto)
                if proto < 1:
                    self.assertIn(b'\nL64206', s)  # LONG
                else:
                    self.assertIn(b'M\xce\xfa', s)  # BININT2
                self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s),
                                 2 <= proto)
                self.assertFalse(opcode_in_pickle(pickle.NEWOBJ_EX, s))
                y = self.loads(s)   # will raise TypeError if __init__ called
                self.assert_is_copy(x, y) 
Example 20
Project: medicare-demo   Author: ofermend   File: pickletester.py    License: Apache License 2.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 21
Project: CTFCrackTools-V2   Author: Acmesec   File: pickletester.py    License: GNU General Public License v3.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 22
Project: CTFCrackTools   Author: Acmesec   File: pickletester.py    License: GNU General Public License v3.0 5 votes vote down vote up
def test_simple_newobj(self):
        x = object.__new__(SimpleNewObj)  # avoid __init__
        x.abc = 666
        for proto in protocols:
            s = self.dumps(x, proto)
            self.assertEqual(opcode_in_pickle(pickle.NEWOBJ, s), proto >= 2)
            y = self.loads(s)   # will raise TypeError if __init__ called
            self.assertEqual(y.abc, 666)
            self.assertEqual(x.__dict__, y.__dict__) 
Example 23
Project: ironpython3   Author: IronLanguages   File: pickletester.py    License: Apache License 2.0 4 votes vote down vote up
def test_bad_stack(self):
        badpickles = [
            b'.',                       # STOP
            b'0',                       # POP
            b'1',                       # POP_MARK
            b'2',                       # DUP
            # b'(2',                    # PyUnpickler doesn't raise
            b'R',                       # REDUCE
            b')R',
            b'a',                       # APPEND
            b'Na',
            b'b',                       # BUILD
            b'Nb',
            b'd',                       # DICT
            b'e',                       # APPENDS
            # b'(e',                    # PyUnpickler raises AttributeError
            b'ibuiltins\nlist\n',       # INST
            b'l',                       # LIST
            b'o',                       # OBJ
            b'(o',
            b'p1\n',                    # PUT
            b'q\x00',                   # BINPUT
            b'r\x00\x00\x00\x00',       # LONG_BINPUT
            b's',                       # SETITEM
            b'Ns',
            b'NNs',
            b't',                       # TUPLE
            b'u',                       # SETITEMS
            # b'(u',                    # PyUnpickler doesn't raise
            b'}(Nu',
            b'\x81',                    # NEWOBJ
            b')\x81',
            b'\x85',                    # TUPLE1
            b'\x86',                    # TUPLE2
            b'N\x86',
            b'\x87',                    # TUPLE3
            b'N\x87',
            b'NN\x87',
            b'\x90',                    # ADDITEMS
            # b'(\x90',                 # PyUnpickler raises AttributeError
            b'\x91',                    # FROZENSET
            b'\x92',                    # NEWOBJ_EX
            b')}\x92',
            b'\x93',                    # STACK_GLOBAL
            b'Vlist\n\x93',
            b'\x94',                    # MEMOIZE
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_stack_errors, p) 
Example 24
def test_bad_stack(self):
        badpickles = [
            b'.',                       # STOP
            b'0',                       # POP
            b'1',                       # POP_MARK
            b'2',                       # DUP
            # b'(2',                    # PyUnpickler doesn't raise
            b'R',                       # REDUCE
            b')R',
            b'a',                       # APPEND
            b'Na',
            b'b',                       # BUILD
            b'Nb',
            b'd',                       # DICT
            b'e',                       # APPENDS
            # b'(e',                    # PyUnpickler raises AttributeError
            b'ibuiltins\nlist\n',       # INST
            b'l',                       # LIST
            b'o',                       # OBJ
            b'(o',
            b'p1\n',                    # PUT
            b'q\x00',                   # BINPUT
            b'r\x00\x00\x00\x00',       # LONG_BINPUT
            b's',                       # SETITEM
            b'Ns',
            b'NNs',
            b't',                       # TUPLE
            b'u',                       # SETITEMS
            # b'(u',                    # PyUnpickler doesn't raise
            b'}(Nu',
            b'\x81',                    # NEWOBJ
            b')\x81',
            b'\x85',                    # TUPLE1
            b'\x86',                    # TUPLE2
            b'N\x86',
            b'\x87',                    # TUPLE3
            b'N\x87',
            b'NN\x87',
            b'\x90',                    # ADDITEMS
            # b'(\x90',                 # PyUnpickler raises AttributeError
            b'\x91',                    # FROZENSET
            b'\x92',                    # NEWOBJ_EX
            b')}\x92',
            b'\x93',                    # STACK_GLOBAL
            b'Vlist\n\x93',
            b'\x94',                    # MEMOIZE
        ]
        for p in badpickles:
            self.check_unpickling_error(self.bad_stack_errors, p) 
Example 25
Project: pywren   Author: pywren   File: cloudpickle.py    License: Apache License 2.0 4 votes vote down vote up
def save_reduce(self, func, args, state=None,
                    listitems=None, dictitems=None, obj=None):
        # Assert that args is a tuple or None
        if not isinstance(args, tuple):
            raise pickle.PicklingError("args from reduce() should be a tuple")

        # Assert that func is callable
        if not hasattr(func, '__call__'):
            raise pickle.PicklingError("func from reduce should be callable")

        save = self.save
        write = self.write

        # Protocol 2 special case: if func's name is __newobj__, use NEWOBJ
        if self.proto >= 2 and getattr(func, "__name__", "") == "__newobj__":
            cls = args[0]
            if not hasattr(cls, "__new__"):
                raise pickle.PicklingError(
                    "args[0] from __newobj__ args has no __new__")
            if obj is not None and cls is not obj.__class__:
                raise pickle.PicklingError(
                    "args[0] from __newobj__ args has the wrong class")
            args = args[1:]
            save(cls)

            save(args)
            write(pickle.NEWOBJ)
        else:
            save(func)
            save(args)
            write(pickle.REDUCE)

        if obj is not None:
            self.memoize(obj)

        # More new special cases (that work with older protocols as
        # well): when __reduce__ returns a tuple with 4 or 5 items,
        # the 4th and 5th item should be iterators that provide list
        # items and dict items (as (key, value) tuples), or None.

        if listitems is not None:
            self._batch_appends(listitems)

        if dictitems is not None:
            self._batch_setitems(dictitems)

        if state is not None:
            save(state)
            write(pickle.BUILD)