Ak.zip May 2026

# Example: Creating a record array with fields "x" and "y" import awkward as ak array = ak.zip({"x": [1, 2, 3], "y": [1.1, 2.2, 3.3]}) # Result: Use code with caution. Copied to clipboard

: In comparison to Pandas, where concat(axis=1) adds columns, ak.zip is the equivalent for adding fields to an Awkward Array record . ak.zip

: If set to True , it effectively takes the union of option masks when zipping arrays with None values, placing the None outside the record rather than inside it. Common Use Cases # Example: Creating a record array with fields

: By passing a dictionary to ak.zip , you can create named fields. Common Use Cases : By passing a dictionary to ak

: It is frequently used when reading from or writing to ROOT files (standard in physics) to ensure that attributes with the same "raggedness" (like jet or muon properties) are grouped correctly for storage. How to concatenate and interleave arrays

: Controls how deeply the function should interleave the lists. Setting depth_limit=1 creates a record structure at the outermost level without attempting to broadcast deeper nested lists.

: It is specifically designed to handle "ragged" or jagged data, where nested lists may have different lengths across different entries. Key Parameters According to the Awkward Array documentation :