#NEWLINE# def __init__( self , iterable = None ) : #NEWLINE# #INDENT# self . end = end = [ ] #NEWLINE# end += [ None , end , end ] #NEWLINE# self . map = { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } #NEWLINE# if ( iterable is not None ) : #NEWLINE# #INDENT# self |= iterable