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n8n-code-python

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Write Python in n8n Code nodes (native Python, `language` pythonNative, n8n 2.x). Use when the user explicitly wants Python in a Code node, when migrating old Pyodide/"Python (Beta)" code that used _input/_json/_node/_now, or when a Python Code node fails with NameError, "Security violations detected", "Import of standard library module … is disallowed", "__build_class__ not found", "A 'json' property isn't a dictionary", or "Python runner unavailable". Covers the only two variables (_items/_item), dict-only access, imports blocked by default, the sandbox's denied builtins, accepted return shapes, and how errors interact with onError. JavaScript is the default for Code nodes — native Python has no n8n helpers and, by default, no imports. EXCEPTION — for Python in the AI-agent-callable Custom Code Tool (@n8n/n8n-nodes-langchain.toolCode), use the n8n-code-tool skill instead (input is _query, return must be a string).

skills/n8n-code-python/SKILL.md

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# Python Code Node (native)

Since n8n 2.0 the Code node's Python runs as **native Python in a task runner** (`language:
"pythonNative"`). The old Pyodide "Python (Beta)" is gone, and with it every n8n helper it had:
`_input`, `_json`, `_node`, `_now`, `_today` and `_jmespath` all raise `NameError` now. Code copied
from old templates, forum posts or older docs usually breaks on this.

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## JavaScript first — stronger than before

Native Python gives you two variables and plain Python, and **by default no imports**: no
`json`, `datetime` or `re`. Everything n8n-specific (`$('Node')`, `$jmespath`, Luxon,
`this.helpers.httpRequest`, static data) exists only in JavaScript. Use Python only when the user
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