n8n-code-python

To write Python in an n8n Code node, use _input.all() to safely access incoming data and return results as a list of dictionaries wrapped in a "json" key for downstream nodes to process.

No, you cannot use external Python libraries in n8n Code nodes. You must rely exclusively on Python's built-in standard library for data transformations, validations, and aggregations.

The correct return format for Python Code nodes in n8n is a list of items where each item is a dictionary containing a "json" key, ensuring downstream nodes receive properly structured data.

To access webhook body data using Python in n8n, apply safe data access patterns like _input.first() or _input.all() within your Code node to retrieve and parse the incoming payload.

n8n Code nodes support Python's standard library modules for typical data transformations. You can use built-in modules for tasks like data validation and aggregation without importing external packages.

Python Code nodes in n8n fail to pass data downstream when the output is not formatted as a list of dictionaries with a "json" key, or when attempting to import unsupported external libraries.