Version 2.0.0rc1

This is the first (pre) release of Awkward 2, after main and main-v1 have diverged (considerably). There is no awkward._v2 submodule in this release. Any instances of

import awkward._v2 as ak

need to be changed to

import awkward as ak

to use this release. Also, there is no guarantee that Awkward 1 code will work in this release; it is a (slightly) backward incompatible major release, but not final until 2.0.0 (no "rc" number).

New features

• feat: replace v1 with v2 (preserve-history) by @agoose77 in #1721
• feat: add _v2 proxy module by @agoose77 in #1730
• feat: make ak.from_json with schema ignore unspecified fields (instead of error). by @jpivarski in #1770
• feat: add new "fields" key to RecordForm by @agoose77 in #1773
• feat: support scalars in TypeTracer operations by @agoose77 in #1774
• feat: add RegularArray._reduce_next implementation by @agoose77 in #1811
• feat: Array Builder in Numba - add missing methods by @ianna in #1677
• feat: to/from RDataFrame support for bool type arrays by @ianna in #1829
• feat: preserve None in np.ravel() by @agoose77 in #1826

Bug-fixes and performance

• fix: ensure behavior is taken from wrapped array in ak.Array by @agoose77 in #1715
• refactor!: disable iteration of records by @agoose77 in #1725
• fix: Record is not in contents, but in record by @ianna in #1739
• fix: use proper lengths in ByteMaskedArray.mergemany by @agoose77 in #1749
• fix: don't assume trailing . for module name in is_XXX_buffer by @agoose77 in #1743
• fix: kernel name in IndexedArray by @agoose77 in #1754
• fix: use raise with ak._errors.wrap_error by @agoose77 in #1760
• fix: use dict representation of Form in pickling by @agoose77 in #1768
• fix: ignore unknown JAX "buffer" types & fix nplike mixing by @agoose77 in #1769
• fix: propagate mask through from_numpy by @agoose77 in #1777
• fix: use the flag for non-persistence by @ianna in #1781
• fix: simplify ListOffsetArray_reduce_nonlocal_outstartsstops by @agoose77 in #1796
• fix: allow empty sublists in ak.run_lengths by @agoose77 in #1795
• fix: ak.prod for booleans had been incorrectly casting output by @jpivarski in #1827
• fix: visit all layout nodes with ak.fill_none(..., axis=None) by @agoose77 in #1830
• perf: only stringify function arguments if nplike is delayed. by @jpivarski in #1825

Other

• refactor: replace Behavior with collections.ChainMap by @agoose77 in #1731
• refactor: rename ak.nplike → ak.nplikes & nplikes.of →nplikes.nplike_of by @agoose77 in #1744
• refactor: split error-handling code from _util by @agoose77 in #1752
• refactor: drop unused code from Form, rename serialisation methods by @agoose77 in #1748
• refactor: reduce qualified names of Content, Form, Type subclasses by @jpivarski in #1757
• refactor: make _v2 facade a static module. by @jpivarski in #1758
• refactor: move is_XXX_buffer into respective nplikes by @agoose77 in #1761
• refactor: cleanup _connect submodule by @agoose77 in #1763
• test: ensure that parameters are kept for NumpyArrays under ufunc operations by @agoose77 in #1712
• test: remove ak.behavior usage in tests by @agoose77 in #1716
• test: use a temp dir for writting out the test files by @ianna in #1804
• build(deps): bump amannn/action-semantic-pull-request from 4 to 5.0.1 by @dependabot in #1788
• build(deps): bump docker/setup-qemu-action from 2.0.0 to 2.1.0 by @dependabot in #1783
• build(deps): bump amannn/action-semantic-pull-request from 5.0.1 to 5.0.2 by @dependabot in #1798
• build(deps): bump pypa/cibuildwheel from 2.10.2 to 2.11.1 by @dependabot in #1787
• ci: bump pypa/cibuildwheel from 2.10.0 to 2.10.2 by @dependabot in #1740
• ci: run Codecov for commits to main by @agoose77 in #1751
• ci: enable versions for built docs by @agoose77 in #1812
• ci: use custom PR message action by @agoose77 in #1816
• docs: update docstring of ak.with_name to reflect None interpretation by @agoose77 in #1665
• docs: merge new docs into main by @agoose77 in #1776
• docs: remove vector_design_prototype's reference by @Saransh-cpp in #1803
• docs: fix redirects by @agoose77 in #1815
• docs: fix kernel generation by @agoose77 in #1800
• docs: enable plausible.js analytics by @agoose77 in #1822
• docs: add vertical margin between badges by @agoose77 in #1832
• docs: add notes on "declaring ArrayBuilder type" by @agoose77 in #1831
• chore: update CITATION.cff by @agoose77 in #1717
• chore: use codecov action by @agoose77 in #1722
• chore: add isort by @henryiii in #1666
• chore: set VERSION_INFO contents to 2.0.0rc1 by @agoose77 in #1723
• chore: remove sre_parse dependency from Lark-generated parser. by @jpivarski in #1759
• chore: update pre-commit hooks by @pre-commit-ci in #1733
• chore: update pre-commit hooks by @pre-commit-ci in #1779
• chore: update pre-commit hooks by @pre-commit-ci in #1801

Full Changelog: v1.10.1...v2.0.0rc1