Developer Splits 2,000-Line Home Assistant Config into 8 Organised Files Using Python

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A Home Assistant user refactored a bloated 2,144-line automations.yaml file — spanning 63 automations across heating, alarms, cameras, and more — into eight separate, topic-specific files. The main concern was silently breaking critical automations, such as heating controls managing 11 thermostats, during the refactor. To address this, the developer wrote a 40-line Python script to split the file and a separate verification script to confirm no automations were lost in the process. Classification was handled through substring matching on German-language automation aliases, routing each entry into a named bucket like 'heating' or 'alarm', with unmatched entries falling into a miscellaneous file. The project highlights a practical approach to managing growing smart-home configuration files without relying on metadata tags or manual reorganisation.

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