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HDF5 for Python

The h5py package is a Pythonic interface to the HDF5 binary data format.

HDF5 lets you store huge amounts of numerical data, and easily manipulate that data from NumPy. For example, you can slice into multi-terabyte datasets stored on disk, as if they were real NumPy arrays. Thousands of datasets can be stored in a single file, categorized and tagged however you want.

Where to start

Other resources

Introductory info

.. toctree::
    :maxdepth: 1

    quick
    build


High-level API reference

.. toctree::
    :maxdepth: 1

    high/file
    high/group
    high/dataset
    high/attr
    high/dims
    high/lowlevel


Advanced topics

.. toctree::
    :maxdepth: 1

    config
    special
    strings
    refs
    mpi
    swmr
    vds
    related_projects


Meta-info about the h5py project

.. toctree::
    :maxdepth: 1

    whatsnew/index
    contributing
    release_guide
    faq
    licenses