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A library for W3C Provenance Data Model supporting PROV-JSON and PROV-XML

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A library for W3C Provenance Data Model supporting PROV-JSON and PROV-XML import/export


  • An implementation of the W3C PROV Data Model in Python.

  • In-memory classes for PROV assertions, which can then be output as PROV-N

  • Serialization and deserializtion support: PROV-JSON and PROV-XML.

  • Exporting PROV documents into various graphical formats (e.g. PDF, PNG, SVG).


See a short tutorial for using this package.

This package is used extensively by ProvStore, a free online repository for provenance documents.


1.4.0 (2015-08-13)

  • Changed the type of qualified names to prov:QUALIFIED_NAME (fixed #68)

  • Removed XSDQName class and stopped supporting parsing xsd:QName as qualified names

  • Replaced pydot dependency with pydotplus

  • Removed support for Python 2.6

  • Various minor bug fixes and improvements

1.3.2 (2015-06-17)

  • Added: prov-compare script to check equivalence of two PROV files (currently supporting JSON and XML)

  • Fixed: deserialising Python 3’s bytes objects (issue #67)

1.3.1 (2015-02-27)

  • Fixed unicode issue with deserialising text contents

  • Set the correct version requirement for six

  • Fixed format selection in prov-convert script

1.3.0 (2015-02-03)

  • Python 3.3 and 3.4 supported

  • Updated prov-convert script to support XML output

  • Added missing test JSON and XML files in distributions

See a complete history.

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