(self, reader, translate)
:param reader: the underlying ColumnReader object to get values from.
        :param translate: a function that takes a value from the underlying
            reader and returns a translated value.
:param reader: the underlying ColumnReader object to get values from.
        :param translate: a function that takes a value from the underlying
            reader and returns a translated value.
: param reader : the underlying ColumnReader object to get values from . : param translate : a function that takes a value from the underlying reader and returns a translated value .
def __init__(self, reader, translate):
        """
        :param reader: the underlying ColumnReader object to get values from.
        :param translate: a function that takes a value from the underlying
            reader and returns a translated value.
        """

        self._reader = reader
        self._translate = translate
def __init__ ( self , reader , translate ) : self . _reader = reader self . _translate = translate