n8n-code-python

To write Python in n8n Code nodes safely, access data using _input.all() or _input.first(), handle webhook payloads carefully, and always return a list of objects containing a json key, such as return [{"json": {}}].

No, you cannot use external Python libraries inside n8n Code nodes. Python data processing is restricted to the standard library only, utilizing built-in modules like json, datetime, re, base64, and hashlib for transformations.

The correct return format for Python data transformation in n8n is a list of objects where each object contains a json key. You must structure your output as return [{"json": {}}] to prevent workflow execution errors.

You should use Python in n8n when you need standard library modules like datetime, re, or hashlib for data validation and transformation. Use JavaScript for node-specific operations or when external npm packages are required.

To handle webhook payloads in n8n Python Code nodes, apply safe data access patterns using _input.first() or _input.all(). This ensures the incoming webhook body is parsed correctly before applying standard library transformations.

Yes, n8n supports per-item processing using Python standard library functions. You can access individual items via _input.item, apply validation using modules like json or re, and return the transformed data in the required json key format.