n8n-code-python

To write Python in n8n Code nodes for data transformation, use only the standard library and return a list of items containing a json field. Safe data access patterns like _input.all() and .get() ensure reliable webhook processing and per-item handling.

No, external Python libraries are not supported in n8n Code nodes. You must implement webhook handling and batch transformations using only Python's standard library to avoid runtime errors and ensure reliable cross-node data references.

The correct return format for Python data in n8n workflows is a list of dictionaries, where each dictionary must contain a json field. This strict n8n format requirement prevents data pipeline failures when processing webhook payloads or batch items.

Choosing between Python and JavaScript for n8n Code node transformations depends on your environment needs. Python is standard-library only and suited for safe data access, while JavaScript may offer broader compatibility for complex workflow requirements without library restrictions.

Your Python Code node in n8n likely fails during webhook processing due to strict return format requirements or unsafe data access. Prevent errors by returning a list of items with a json field and using safe dictionary access methods like .get().

Access input data safely in n8n Python Code nodes by using _input.all(), _input.first(), or _input.item patterns. Combine these with safe dictionary access like .get() to handle missing keys and prevent workflow failures during batch transformations.