ERROR_PATTERNS

Common Python Code node errors and how to fix them.

Skills
Workflow Automation
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A skill that teaches Claude Code to do workflow automation tasks well. It is packaged knowledge the model uses whenever it is relevant.

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mkdir -p .claude/skills/error-patterns && curl -fsSL https://doutorai.pt/data/lib/skills__error-patterns.md -o .claude/skills/error-patterns/SKILL.md

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Content

# Error Patterns - Python Code Node

Common Python Code node errors and how to fix them.

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## Error Overview

**Top 5 Python Code Node Errors**:

1. **ModuleNotFoundError** - Trying to import external libraries (Python-specific)
2. **Empty Code / Missing Return** - No code or return statement
3. **KeyError** - Dictionary access without .get()
4. **IndexError** - List access without bounds checking
5. **Incorrect Return Format** - Wrong data structure returned

These 5 errors cover the majority of Python Code node failures.

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## Error #1: ModuleNotFoundError (MOST CRITICAL)

**Frequency

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