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Run and read a Python Code node

Not every row in a feed is clean — missing temperatures or empty descriptions should surface before they skew reports. Catching problems upstream keeps the downstream branch reliable.

Import the starter with pinned city data, execute it, and trace how the Python Code node tags each row. Then watch the Is Valid? node route good records to True and broken ones to False.

This exercise is part of the course

Intermediate Workflow Automation with n8n

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