如何使用H5PY将HDF5文件导出到NumPy？

Question

我有一个包含三个数组的现有hdf5文件，我想使用h5py提取其中一个数组。

Answer 1

h5py already reads files in as numpy arrays, so just:

with h5py.File('the_filename', 'r') as f:
    my_array = f['array_name'][()]

The [()] means to read the entire array in; if you don't do that, it doesn't read the whole data but instead gives you lazy access to sub-parts (very useful when the array is huge but you only need a small part of it).

Answer 2

For this question it is way overkill but if you have a lot of things like this to do I use a package SpacePy that makes some of this easier.

datamodel.fromHDF5() documentation This returns a dictionary of arrays stored in a similar way to how h5py handles data.