def __init__(self, file, mmap_mode=None):
        self._path = file
        self._loaded = False
Retrieve source URL, standardized filename and other metadata for a results file.
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/npy_npz.py/NpyDataset.__init__--crossover with--dataset/ETHPy150Open openelections/openelections-core/openelex/base/datasource.py/BaseDatasource.mappings