ak.merge_union_of_records ------------------------- .. py:module: ak.merge_union_of_records Defined in `awkward.operations.ak_merge_union_of_records `__ on `line 20 `__. .. py:function:: ak.merge_union_of_records(array, axis=-1, *, highlevel=True, behavior=None, attrs=None) :param array: Array-like data (anything :py:obj:`ak.to_layout` recognizes). :param axis: The dimension at which this operation is applied. The outermost dimension is ``0``, followed by ``1``, etc., and negative values count backward from the innermost: ``-1`` is the innermost dimension, ``-2`` is the next level up, etc. :type axis: int :param highlevel: If True, return an :py:obj:`ak.Array`; otherwise, return a low-level :py:obj:`ak.contents.Content` subclass. :type highlevel: bool :param behavior: Custom :py:obj:`ak.behavior` for the output array, if high-level. :type behavior: None or dict :param attrs: Custom attributes for the output array, if high-level. :type attrs: None or dict Simplifies unions of records, e.g. .. code-block:: python >>> array = ak.concatenate(([{"a": 1}], [{"b": 2}])) >>> array into records of options, i.e. .. code-block:: python >>> ak.merge_union_of_records(array) Missing records are preserved in the result, e.g. .. code-block:: python >>> array = ak.concatenate(([{"a": 1}], [{"b": 2}, None])) >>> array >>> ak.merge_union_of_records(array)