# \[Breaking change\] partition keys removed from python interface

**URL:** <https://discuss.hail.is/t/breaking-change-partition-keys-removed-from-python-interface/635>\
**Category:** Updates\
**Created:** [September 5, 2018, 9:58pm UTC](https://discuss.hail.is/t/breaking-change-partition-keys-removed-from-python-interface/635 "2018-09-05T21:58:59Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![wang](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.hail.is/wang/32/146_2.png) [@wang](https://discuss.hail.is/u/wang)\
**Post date:** [September 5, 2018, 9:58pm UTC](https://discuss.hail.is/t/breaking-change-partition-keys-removed-from-python-interface/635/1 "2018-09-05T21:58:59Z")

</div>

[https://github.com/hail-is/hail/pull/4197](https://github.com/hail-is/hail/pull/4197)

This removes the `partition_key` property from `MatrixTable`, and all associated methods and flags on methods that interacted with it, such as `partition_rows_by`.