3.9.2

Fixes #327, a naive regular expression for determining streamer types from TBranch titles.

3.9.1

PRs #319, #320, #243 (redux), #325, and #326.

• Fixed a memory issue (Python garbage collector gets too far behind) related to large basket recovery.
• ROOT now splits the serialization of std::map; added handling of split key-value pairs.
• Implemented TRef as a type that can be read from TTrees.

3.9.0

No change in code, but this is the first release to explicitly require awkward<1.0, so that when awkward 1.0 does come to exist, most uproot users won't accidentally upgrade to it. (PR #318)

To get awkward 1.0, users will need to explicitly upgrade to uproot 4.0.

3.8.2

uproot can now write ROOT files which have TTrees with empty TBaskets.
Fixes bug preventing ROOT from adding objects to files created in uproot.

3.8.1

Histograms with bin labels can now be written by uproot into new ROOT files.

The checksum of lz4 compressed ROOT files is now checked when they are being read by uproot. xxhash is now a strict dependency for reading lz4 compressed ROOT files.

3.8.0

TTree.pandas.df was broken by the rename of awkward.index to awkward.localindex (which itself was to resolve a name-collision). Calling localindex and updating the minimum awkward version to 0.12 fixes that problem. (PR #303)

3.7.2

Fixes #294 with #295: uproot.pandas.iterate assumes Python 3's absolute imports, so for Python 2 to work, we need

from __future__ import absolute_import

at the top of every file in uproot. (Thanks, @chrisburr!)

3.7.1

PR #293 (on master, not back-propagated).

3.4.21

Try again to back-propagate PR #293 into 3.4.x (making 3.4.21). Last time, I didn't include upper bounds in the versions and pulled awkward and uproot-methods that were too new for this uproot.

3.4.20

Back-propagate PR #293 into 3.4.x (making 3.4.20).