Defined in awkward.operations.reducers on line 452.

ak.all(array, axis=None, keepdims=False, mask_identity=False)
  • array – Data to combine with “logical all.”

  • axis (None or int) – If None, combine all values from the array into a single scalar result; if an int, group by that axis: 0 is the outermost, 1 is the first level of nested lists, etc., and negative axis counts from the innermost: -1 is the innermost, -2 is the next level up, etc.

  • keepdims (bool) – If False, this reducer decreases the number of dimensions by 1; if True, the reduced values are wrapped in a new length-1 dimension so that the result of this operation may be broadcasted with the original array.

  • mask_identity (bool) – If True, reducing over empty lists results in None (an option type); otherwise, reducing over empty lists results in the operation’s identity.

Returns True in each group of elements from array (many types supported, including all Awkward Arrays and Records) if all values are True; False otherwise. Thus, it represents reduction over the “logical and” operation, whose identity is True (i.e. asking if all the values are True in an empty list results in True). This operation is the same as NumPy’s all if all lists at a given dimension have the same length and no None values, but it generalizes to cases where they do not.

See ak.sum for a more complete description of nested list and missing value (None) handling in reducers.