How to use the unicodecsv.DictReader.__init__ function in unicodecsv

def __init__(self, f, fieldnames=None, restkey=None, restval=None,
                 dialect="excel", *args, **kwds):
        # Preserve file since we're going to start reading it
        self._file = f

        # Preserve reader options since we'll need to make another one
        readeropts = [f, dialect]
        readeropts.extend(args)
        self._readeropts = (readeropts, kwds)
        csv.DictReader.__init__(self, f, fieldnames, restkey, restval,
                                dialect, *args, **kwds)