Defined in awkward.operations.ak_concatenate on line 28.

ak.concatenate(arrays, axis=0, *, mergebool=True, highlevel=True, behavior=None, attrs=None)#
  • arrays – Array-like data (anything ak.to_layout recognizes).

  • axis (int) – 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.

  • mergebool (bool) – If True, boolean and numeric data can be combined into the same buffer, losing information about False vs 0 and True vs 1; otherwise, they are kept in separate buffers with distinct types (using an ak.contents.UnionArray).

  • highlevel (bool) – If True, return an ak.Array; otherwise, return a low-level ak.contents.Content subclass.

  • behavior (None or dict) – Custom ak.behavior for the output array, if high-level.

  • attrs (None or dict) – Custom attributes for the output array, if high-level.

Returns an array with arrays concatenated. For axis=0, this means that one whole array follows another. For axis=1, it means that the arrays must have the same lengths and nested lists are each concatenated, element for element, and similarly for deeper levels.