n8n-code-python

Python in n8n Code nodes is limited to the standard library with no external packages, and data is accessed using underscore-prefixed patterns like _input.all(), _input.first(), or _input.item for transformations.

Webhook body data in an n8n Python Code node is accessed under the body key, requiring safe dictionary access methods to parse incoming payloads and return them as a list of json objects.

External Python libraries cannot be used in n8n Code nodes; execution is constrained to Python's standard library, including modules like json, datetime, re, base64, and hashlib for workflows.

The correct return format for Python code in n8n is a list of items where each item is a dictionary containing a json key, ensuring downstream nodes can properly parse the transformed data.

Python code node errors in n8n typically occur when using incorrect data access patterns; use _input.all() for batch items, _input.item for single entries, and apply safe dictionary access to prevent exceptions.

Batch operations with Python in n8n are best handled by reading all items with _input.all(), iterating through them with standard library functions, and returning the transformed results as a list of json objects.