How to use the tomlkit.items.Integer function in tomlkit

def test_items_can_be_appended_to_and_removed_from_an_inline_table():
    string = """table = {}
"""

    parser = Parser(string)
    _, table = parser._parse_item()

    assert isinstance(table, InlineTable)
    assert "{}" == table.as_string()

    table.append(Key("foo"), String(StringType.SLB, "bar", "bar", Trivia(trail="")))

    assert '{foo = "bar"}' == table.as_string()

    table.append(Key("baz"), Integer(34, Trivia(trail=""), "34"))

    assert '{foo = "bar", baz = 34}' == table.as_string()

    table.remove(Key("baz"))

    assert '{foo = "bar"}' == table.as_string()

    table.remove(Key("foo"))

    assert "{}" == table.as_string()

    with pytest.raises(NonExistentKey):
        table.remove(Key("foo"))

def test_key_value():
    k, i = tomlkit.key_value("foo = 12")

    assert isinstance(k, Key)
    assert isinstance(i, Integer)

def item(value, _parent=None):
    from .container import Container

    if isinstance(value, Item):
        return value

    if isinstance(value, bool):
        return Bool(value, Trivia())
    elif isinstance(value, int):
        return Integer(value, Trivia(), str(value))
    elif isinstance(value, float):
        return Float(value, Trivia(), str(value))
    elif isinstance(value, dict):
        val = Table(Container(), Trivia(), False)
        for k, v in sorted(value.items(), key=lambda i: (isinstance(i[1], dict), i[0])):
            val[k] = item(v, _parent=val)

        return val
    elif isinstance(value, list):
        if value and isinstance(value[0], dict):
            a = AoT([])
        else:
            a = Array([], Trivia())

        for v in value:
            if isinstance(v, dict):

def _new(self, result):
        raw = str(result)

        if self._sign:
            sign = "+" if result >= 0 else "-"
            raw = sign + raw

        return Integer(result, self._trivia, raw)

def __radd__(self, other):
        result = super(Integer, self).__radd__(other)

        if isinstance(other, Integer):
            return self._new(result)

        return result

def item(value, _parent=None):
    from .container import Container

    if isinstance(value, Item):
        return value

    if isinstance(value, bool):
        return Bool(value, Trivia())
    elif isinstance(value, int):
        return Integer(value, Trivia(), str(value))
    elif isinstance(value, float):
        return Float(value, Trivia(), str(value))
    elif isinstance(value, dict):
        val = Table(Container(), Trivia(), False)
        for k, v in sorted(value.items(), key=lambda i: (isinstance(i[1], dict), i[0])):
            val[k] = item(v, _parent=val)

        return val
    elif isinstance(value, list):
        if value and isinstance(value[0], dict):
            a = AoT([])
        else:
            a = Array([], Trivia())

        for v in value:
            if isinstance(v, dict):

base = 8
        elif raw.startswith("0x"):
            digits = "[0-9a-f]"
            base = 16

        # Underscores should be surrounded by digits
        clean = re.sub("(?i)(?<={})_(?={})".format(digits, digits), "", raw)

        if "_" in clean:
            return

        if clean.endswith("."):
            return

        try:
            return Integer(int(sign + clean, base), trivia, sign + raw)
        except ValueError:
            try:
                return Float(float(sign + clean), trivia, sign + raw)
            except ValueError:
                return