Lua-Table like dictionary for Python

Table.py

class Table(dict):
    def __getattr__(self, name):
        return self[name] if name in self else None
    def __setattr__(self, name, value):
        if value is not None:
            self[name] = value
        elif name in self:
            del self[name]
    def __delattr__(self, name):
        self.__setattr__(name, None)

d = Table()
d.foo = 'bar'
print d.foo # bar
d.foo = None # = del d.foo