n8n-code-python

Use _input.all(), _input.first(), _input.item, and _node to access input data in n8n Python Code nodes. These built-in patterns let you retrieve items for data transformations and webhook payload processing while adhering to the standard library constraint.

No, n8n Code nodes enforce a strict no external libraries constraint. You must rely solely on the Python standard library for parsing, formatting, and data transformations when processing webhook payloads or performing utility tasks.

Access webhook payloads in n8n Python Code using the consistent body structure under data["body"]. Apply standard library tools to parse and transform the payload, returning a properly formatted list of dictionaries with a json field for downstream nodes.

All Items mode processes the entire input array at once using _input.all(), while Each Item mode handles individual items sequentially. Selecting the appropriate mode prevents common error patterns and ensures safe data handling in production workflows.

Return a properly structured list of dictionaries containing a json field to format output for downstream nodes in n8n Python Code. This structure ensures your data transformations and webhook payload processing results are correctly consumed by subsequent workflow nodes.

Python code fails in n8n when using external packages because the platform enforces a no external libraries constraint. Your code must rely exclusively on the Python standard library for data transformations, webhook processing, and utility tasks to avoid execution errors.