ó ¾÷Xc@@s›dZddlmZddlmZddlZddlZddlmZyddl Z Wne k rwdZ nXde fd„ƒYZ d„ZdS( sUtilities related to disk I/O.i(tabsolute_import(tprint_functionN(t defaultdictt HDF5MatrixcB@sMeZdZeeƒZdddd„Zd„Zd„Z e d„ƒZ RS(sRepresentation of HDF5 dataset to be used instead of a Numpy array. # Example ```python x_data = HDF5Matrix('input/file.hdf5', 'data') model.predict(x_data) ``` Providing `start` and `end` allows use of a slice of the dataset. Optionally, a normalizer function (or lambda) can be given. This will be called on every slice of data retrieved. # Arguments datapath: string, path to a HDF5 file dataset: string, name of the HDF5 dataset in the file specified in datapath start: int, start of desired slice of the specified dataset end: int, end of desired slice of the specified dataset normalizer: function to be called on data when retrieved # Returns An array-like HDF5 dataset. icC@s°tdkrtdƒ‚n|t|jjƒƒkrUtj|ƒ}||j|s    R