11
I Use This!
Moderate Activity
Analyzed about 1 hour ago. based on code collected about 18 hours ago.

Project Summary

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

It 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.

H5py uses straightforward NumPy and Python metaphors, like dictionary and NumPy array syntax. You can iterate over datasets in a file, or check out the .shape or .dtype attributes of datasets; you don't need to know anything special about HDF5 to get started.

Best of all, the files you create are in a standard binary format you can exchange with other people, including those who use programs like IDL and MATLAB.

Tags

binding cython h5 hdf hdf5 netcdf numerical numpy physics pyrex python science scipy swig wrapper

Badges

In a Nutshell, h5py...

BSD 3-clause "New" or "Revised" License
Permitted

Commercial Use

Modify

Distribute

Place Warranty

Forbidden

Hold Liable

Use Trademarks

Required

Include Copyright

Include License

These details are provided for information only. No information here is legal advice and should not be used as such.

Project Security

Vulnerabilities per Version ( last 10 releases )

There are no reported vulnerabilities

Project Vulnerability Report

Security Confidence Index

Poor security track-record
Favorable security track-record

Vulnerability Exposure Index

Many reported vulnerabilities
Few reported vulnerabilities

Did You Know...

  • ...
    nearly 1 in 3 companies have no process for identifying, tracking, or remediating known open source vulnerabilities
  • ...
    data presented on the Open Hub is available through our API
  • ...
    use of OSS increased in 65% of companies in 2016
  • ...
    check out hot projects on the Open Hub
About Project Security

Languages

Python
95%
5 Other
5%

30 Day Summary

Sep 26 2026 — Oct 26 2026

12 Month Summary

Oct 26 2025 — Oct 26 2026
  • 373 Commits
    Down -18 (4%) from previous 12 months
  • 17 Contributors
    Down -9 (34%) from previous 12 months