n8n-code-python

Topics in the source

• Python Code Node (Beta)
• ⚠️ Important: JavaScript First
• Quick Start
• Essential Rules
• Mode Selection Guide
• Run Once for All Items (Recommended - Default)
• Run Once for Each Item
• Python Modes: Beta vs Native

Expert guidance for writing Python code in n8n Code nodes. -- Recommendation: Use JavaScript for 95% of use cases. Only use Python when: You need specific Python standard library functions You're significantly more comfortable with Python syntax You're doing data transformations better suited to Python Why JavaScript is preferred: Full n8n helper functions ($helpers.httpRequest, etc.) Luxon DateTime library for advanced date/time operations No external library limitations Better n8n documentation and community support -- 1. Consider JavaScript first - Use Python only when necessary 2. Access data: input.all(), input.first(), or input.item 3. CRITICAL: Must return [{"json": {...}}] format 4. CRITICAL: Webhook data is under json["body"] (not json directly) 5. CRITICAL LIMITATION: No external libraries (no requests, pandas, numpy) 6. Standard library only: json, datetime, re, base64, hashlib, urllib.parse, math, random, statistics -- Same as JavaScript - choose based on your use case: Use this mode for: 95% of use cases How it works: Code executes once regardless of input count Data access: input.all() or items array (Native mode) Best for: Aggregation, filtering, batch processing, tr

This is an excerpt. Refer to the complete source and its current requirements.