python类UserDict()的实例源码

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def modifies_known_mutable(obj, attr):
    """This function checks if an attribute on a builtin mutable object
    (list, dict, set or deque) would modify it if called.  It also supports
    the "user"-versions of the objects (`sets.Set`, `UserDict.*` etc.) and
    with Python 2.6 onwards the abstract base classes `MutableSet`,
    `MutableMapping`, and `MutableSequence`.

    >>> modifies_known_mutable({}, "clear")
    True
    >>> modifies_known_mutable({}, "keys")
    False
    >>> modifies_known_mutable([], "append")
    True
    >>> modifies_known_mutable([], "index")
    False

    If called with an unsupported object (such as unicode) `False` is
    returned.

    >>> modifies_known_mutable("foo", "upper")
    False
    """
    for typespec, unsafe in _mutable_spec:
        if isinstance(obj, typespec):
            return attr in unsafe
    return False

def test_init(self):
        for kw in 'self', 'other', 'iterable':
            self.assertEqual(list(UserDict.UserDict(**{kw: 42}).items()),
                             [(kw, 42)])
        self.assertEqual(list(UserDict.UserDict({}, dict=42).items()),
                         [('dict', 42)])
        self.assertEqual(list(UserDict.UserDict({}, dict=None).items()),
                         [('dict', None)])
        with test_support.check_warnings((".*'dict'.*",
                                          PendingDeprecationWarning)):
            self.assertEqual(list(UserDict.UserDict(dict={'a': 42}).items()),
                             [('a', 42)])
        self.assertRaises(TypeError, UserDict.UserDict, 42)
        self.assertRaises(TypeError, UserDict.UserDict, (), ())
        self.assertRaises(TypeError, UserDict.UserDict.__init__)

def test_update(self):
        for kw in 'self', 'other', 'iterable':
            d = UserDict.UserDict()
            d.update(**{kw: 42})
            self.assertEqual(list(d.items()), [(kw, 42)])
        d = UserDict.UserDict()
        with test_support.check_warnings((".*'dict'.*",
                                          PendingDeprecationWarning)):
            d.update(dict={'a': 42})
        self.assertEqual(list(d.items()), [('a', 42)])
        self.assertRaises(TypeError, UserDict.UserDict().update, 42)
        self.assertRaises(TypeError, UserDict.UserDict().update, {}, {})
        self.assertRaises(TypeError, UserDict.UserDict.update)

def test_fromkeys(self):
        TestMappingProtocol.test_fromkeys(self)
        class mydict(self.type2test):
            def __new__(cls):
                return UserDict.UserDict()
        ud = mydict.fromkeys('ab')
        self.assertEqual(ud, {'a':None, 'b':None})
        self.assertIsInstance(ud, UserDict.UserDict)

def test_setting_dict_to_invalid(self):
        self.cannot_set_attr(self.b, '__dict__', None, TypeError)
        self.cannot_set_attr(self.b, 'func_dict', None, TypeError)
        from UserDict import UserDict
        d = UserDict({'known_attr': 7})
        self.cannot_set_attr(self.f.a.im_func, '__dict__', d, TypeError)
        self.cannot_set_attr(self.fi.a.im_func, '__dict__', d, TypeError)

def test_plain(self):
        f = self.makeCallable('a, b=1')
        self.assertEqualCallArgs(f, '2')
        self.assertEqualCallArgs(f, '2, 3')
        self.assertEqualCallArgs(f, 'a=2')
        self.assertEqualCallArgs(f, 'b=3, a=2')
        self.assertEqualCallArgs(f, '2, b=3')
        # expand *iterable / **mapping
        self.assertEqualCallArgs(f, '*(2,)')
        self.assertEqualCallArgs(f, '*[2]')
        self.assertEqualCallArgs(f, '*(2, 3)')
        self.assertEqualCallArgs(f, '*[2, 3]')
        self.assertEqualCallArgs(f, '**{"a":2}')
        self.assertEqualCallArgs(f, 'b=3, **{"a":2}')
        self.assertEqualCallArgs(f, '2, **{"b":3}')
        self.assertEqualCallArgs(f, '**{"b":3, "a":2}')
        # expand UserList / UserDict
        self.assertEqualCallArgs(f, '*UserList([2])')
        self.assertEqualCallArgs(f, '*UserList([2, 3])')
        self.assertEqualCallArgs(f, '**UserDict(a=2)')
        self.assertEqualCallArgs(f, '2, **UserDict(b=3)')
        self.assertEqualCallArgs(f, 'b=2, **UserDict(a=3)')
        # unicode keyword args
        self.assertEqualCallArgs(f, '**{u"a":2}')
        self.assertEqualCallArgs(f, 'b=3, **{u"a":2}')
        self.assertEqualCallArgs(f, '2, **{u"b":3}')
        self.assertEqualCallArgs(f, '**{u"b":3, u"a":2}')

def test_varkw(self):
        f = self.makeCallable('a, b=1, **c')
        self.assertEqualCallArgs(f, 'a=2')
        self.assertEqualCallArgs(f, '2, b=3, c=4')
        self.assertEqualCallArgs(f, 'b=3, a=2, c=4')
        self.assertEqualCallArgs(f, 'c=4, **{"a":2, "b":3}')
        self.assertEqualCallArgs(f, '2, c=4, **{"b":3}')
        self.assertEqualCallArgs(f, 'b=2, **{"a":3, "c":4}')
        self.assertEqualCallArgs(f, '**UserDict(a=2, b=3, c=4)')
        self.assertEqualCallArgs(f, '2, c=4, **UserDict(b=3)')
        self.assertEqualCallArgs(f, 'b=2, **UserDict(a=3, c=4)')
        # unicode keyword args
        self.assertEqualCallArgs(f, 'c=4, **{u"a":2, u"b":3}')
        self.assertEqualCallArgs(f, '2, c=4, **{u"b":3}')
        self.assertEqualCallArgs(f, 'b=2, **{u"a":3, u"c":4}')

def test_multiple_features(self):
        f = self.makeCallable('a, b=2, (c,(d,e))=(3,[4,5]), *f, **g')
        self.assertEqualCallArgs(f, '2, 3, (4,[5,6]), 7')
        self.assertEqualCallArgs(f, '2, 3, *[(4,[5,6]), 7], x=8')
        self.assertEqualCallArgs(f, '2, 3, x=8, *[(4,[5,6]), 7]')
        self.assertEqualCallArgs(f, '2, x=8, *[3, (4,[5,6]), 7], y=9')
        self.assertEqualCallArgs(f, 'x=8, *[2, 3, (4,[5,6])], y=9')
        self.assertEqualCallArgs(f, 'x=8, *UserList([2, 3, (4,[5,6])]), '
                                 '**{"y":9, "z":10}')
        self.assertEqualCallArgs(f, '2, x=8, *UserList([3, (4,[5,6])]), '
                                 '**UserDict(y=9, z=10)')

def test_init(self):
        for kw in 'self', 'other', 'iterable':
            self.assertEqual(list(UserDict.UserDict(**{kw: 42}).items()),
                             [(kw, 42)])
        self.assertEqual(list(UserDict.UserDict({}, dict=42).items()),
                         [('dict', 42)])
        self.assertEqual(list(UserDict.UserDict({}, dict=None).items()),
                         [('dict', None)])
        with test_support.check_warnings((".*'dict'.*",
                                          PendingDeprecationWarning)):
            self.assertEqual(list(UserDict.UserDict(dict={'a': 42}).items()),
                             [('a', 42)])
        self.assertRaises(TypeError, UserDict.UserDict, 42)
        self.assertRaises(TypeError, UserDict.UserDict, (), ())
        self.assertRaises(TypeError, UserDict.UserDict.__init__)

def test_update(self):
        for kw in 'self', 'other', 'iterable':
            d = UserDict.UserDict()
            d.update(**{kw: 42})
            self.assertEqual(list(d.items()), [(kw, 42)])
        d = UserDict.UserDict()
        with test_support.check_warnings((".*'dict'.*",
                                          PendingDeprecationWarning)):
            d.update(dict={'a': 42})
        self.assertEqual(list(d.items()), [('a', 42)])
        self.assertRaises(TypeError, UserDict.UserDict().update, 42)
        self.assertRaises(TypeError, UserDict.UserDict().update, {}, {})
        self.assertRaises(TypeError, UserDict.UserDict.update)

def test_fromkeys(self):
        TestMappingProtocol.test_fromkeys(self)
        class mydict(self.type2test):
            def __new__(cls):
                return UserDict.UserDict()
        ud = mydict.fromkeys('ab')
        self.assertEqual(ud, {'a':None, 'b':None})
        self.assertIsInstance(ud, UserDict.UserDict)

def test_setting_dict_to_invalid(self):
        self.cannot_set_attr(self.b, '__dict__', None, TypeError)
        self.cannot_set_attr(self.b, 'func_dict', None, TypeError)
        from UserDict import UserDict
        d = UserDict({'known_attr': 7})
        self.cannot_set_attr(self.f.a.im_func, '__dict__', d, TypeError)
        self.cannot_set_attr(self.fi.a.im_func, '__dict__', d, TypeError)

def test_plain(self):
        f = self.makeCallable('a, b=1')
        self.assertEqualCallArgs(f, '2')
        self.assertEqualCallArgs(f, '2, 3')
        self.assertEqualCallArgs(f, 'a=2')
        self.assertEqualCallArgs(f, 'b=3, a=2')
        self.assertEqualCallArgs(f, '2, b=3')
        # expand *iterable / **mapping
        self.assertEqualCallArgs(f, '*(2,)')
        self.assertEqualCallArgs(f, '*[2]')
        self.assertEqualCallArgs(f, '*(2, 3)')
        self.assertEqualCallArgs(f, '*[2, 3]')
        self.assertEqualCallArgs(f, '**{"a":2}')
        self.assertEqualCallArgs(f, 'b=3, **{"a":2}')
        self.assertEqualCallArgs(f, '2, **{"b":3}')
        self.assertEqualCallArgs(f, '**{"b":3, "a":2}')
        # expand UserList / UserDict
        self.assertEqualCallArgs(f, '*UserList([2])')
        self.assertEqualCallArgs(f, '*UserList([2, 3])')
        self.assertEqualCallArgs(f, '**UserDict(a=2)')
        self.assertEqualCallArgs(f, '2, **UserDict(b=3)')
        self.assertEqualCallArgs(f, 'b=2, **UserDict(a=3)')
        # unicode keyword args
        self.assertEqualCallArgs(f, '**{u"a":2}')
        self.assertEqualCallArgs(f, 'b=3, **{u"a":2}')
        self.assertEqualCallArgs(f, '2, **{u"b":3}')
        self.assertEqualCallArgs(f, '**{u"b":3, u"a":2}')