objectlist.py

class ObjectList(list):
    """A list that can call its objects methods/variables and returns their
    own returns in a list. Obviously, the list should contains only one type of
    objects.
 
    Example of use:
        >>> foo = ObjectList(["bar", "baZ"])
        >>> foo.islower()
        [True, False]
        >>> foo.append(42)
        >>> foo.islower()
        Traceback (most recent call last):
          ...
        AttributeError: 'int' object has no attribute 'islower'
        >>> foo
        ['bar', 'baZ', 42]
    """
 
    def __getattr__(self, name):
        attrlist = ObjectList()
        for o in self:
            if o is not None:
                attr = getattr(o, name)
                attrlist.append(attr)
        return attrlist
 
    def __call__(self, *args, **kwargs):
        retlist = []
        for o in self:
            if callable(o):
                o = o(*args, **kwargs)
            retlist.append(o)
        return retlist