def __init__(self, path=None, s3_path=None):
        self.path = parse_path(path)
        self._s3_path = s3_path
Indicates whether the caller is on the main gui thread.
dataset/ETHPy150Open coursera/dataduct/dataduct/s3/s3_directory.py/S3Directory.__init__--crossover with--dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/wx/wx_application.py/WxApplication.is_main_thread