def __init__(self, filename, filter_=None, **csv_kwargs):
        self._filename = filename
        self._filter = (lambda x: True) if filter_ is None else filter_
        self._csv_kwargs = csv_kwargs
        self._handle = None
        self._writer = None
        self._ready = False
Class initialization.
dataset/ETHPy150Open enthought/pikos/pikos/recorders/csv_file_recorder.py/CSVFileRecorder.__init__