#NEWLINE# def __init__( self , label , url = '' , condition = True , **attrs ) : #NEWLINE# #INDENT# 'Constructor.\n        \n        The \'label\' argument is required. If empty or ``None``, copy the URL to\n        the label. The URL defaults to ``""``.\n        ' #NEWLINE# self . label = ( self or url ) #NEWLINE# self . url = url #NEWLINE# self . condition = condition #NEWLINE# self . attrs = attrs