List to Accumulation¶
Converts any input into an accumulation structure used by Salt list/accumulation nodes. If the input is already a Python list, it is used directly; otherwise, the value is wrapped into a single-item list and returned as an ACCUMULATION.
Usage¶
Use this node when you need to feed a list (or a single value) into nodes that expect an ACCUMULATION. Typical workflows include converting a prepared list into an ACCUMULATION for iteration, indexing, or further list operations with other accumulation nodes.
Inputs¶
| Field | Required | Type | Description | Example |
|---|---|---|---|---|
| list | True | * | The value or list to convert. If a Python list is provided, it becomes the accumulation contents; otherwise, the input is wrapped into a single-element list. | [1, 2, 3] or "hello world" or 42 |
Outputs¶
| Field | Type | Description | Example |
|---|---|---|---|
| accumulation | ACCUMULATION | An accumulation object with an 'accum' list containing the provided values. | {"accum": [1, 2, 3]} |
Important Notes¶
- If the input is a Python list, it is used as-is inside the accumulation. If not, the input is wrapped into a single-element list.
- Passing an ACCUMULATION object here will be treated as a non-list value and wrapped, resulting in an accumulation of the form {"accum": [{"accum": [...]}]}. Convert it to a plain list first if needed.
- Non-list iterables (e.g., tuples, generators, sets) will be wrapped as a single item; convert them to a list beforehand if you want their elements inside the accumulation.
- If the input is None, the output will be {"accum": [None]}.
- On internal errors, the node returns an empty accumulation: {"accum": []}.
Troubleshooting¶
- Unexpected nested accumulation: You likely passed an ACCUMULATION. First convert it to a list using Accumulation to List, then pass the list here if needed.
- Tuple or set became a single item: Convert your input to a list before this node to spread elements inside the accumulation.
- Got {"accum": [None]}: Ensure your input isn't None. Provide a valid list or value.
- Empty output {"accum": []}: An internal error occurred or an invalid type was processed. Validate the input type and retry.