#NEWLINE# def __missing__( self , key ) : #NEWLINE# #INDENT# try : #NEWLINE# #INDENT# value = raw_input ( prompt_str . format ( key ) ) #NEWLINE# #UNINDENT# except KeyboardInterrupt : #NEWLINE# #INDENT# raise SystemExit #NEWLINE# #UNINDENT# if ( not value ) : #NEWLINE# #INDENT# value = None #NEWLINE# #UNINDENT# self [ key ] = value #NEWLINE# return value