def __init__(self, data, selected=None, attr=None, indent=None):
"""
Represents an 'option' html element. If selected is True this
Elem will be selected when nested in a 'select' Elem.
"""
self.selected = selected
Elem.__init__(self, data, attr=attr, indent=indent)
def __init__(self, data, attr=None, indent=None):
"""
Represents an 'a' html element. An href attribute is required.
"""
Elem.__init__(self, data, attr=attr, indent=indent)
self.reqiure_attr('href')