(self, data_iter, *metrics)
Parameters:
            data_iter: Dataset iterator derived from torchtext.data.Iterator
            metric_fns: List of metric objects extending the Metric class
Parameters:
            data_iter: Dataset iterator derived from torchtext.data.Iterator
            metric_fns: List of metric objects extending the Metric class
Parameters : data_iter : Dataset iterator derived from torchtext . data . Iterator metric_fns : List of metric objects extending the Metric class
def __init__(self, data_iter, *metrics):
        """
        Parameters:
            data_iter: Dataset iterator derived from torchtext.data.Iterator
            metric_fns: List of metric objects extending the Metric class
        """
        self.data_iter = data_iter
        self.metrics = metrics or []
def __init__ ( self , data_iter , * metrics ) : self . data_iter = data_iter self . metrics = metrics or [ ]