util.py

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"""Utilities for deCONZ integration."""
 
from __future__ import annotations
 
 
def serial_from_unique_id(unique_id: str | None) -> str | None:
    """Get a device serial number from a unique ID, if possible."""
    if not unique_id or unique_id.count(":") != 7:
        return None
    return unique_id.partition("-")[0]