def __init__( self, exprs, savelist = False ):
        super(ParseExpression,self).__init__(savelist)
        if isinstance( exprs, list ):
            self.exprs = exprs
        elif isinstance( exprs, str ):
            self.exprs = [ Literal( exprs ) ]
        else:
            try:
                self.exprs = list( exprs )
            except __HOLE__:
                self.exprs = [ exprs ]
        self.callPreparse = False
dataset/ETHPy150Open ipython/ipython-py3k/IPython/external/pyparsing/_pyparsing.py/ParseExpression.__init__