diff --git a/homeassistant/components/evohome/__init__.py b/homeassistant/components/evohome/__init__.py index adb6e856984..ba7a72024ed 100644 --- a/homeassistant/components/evohome/__init__.py +++ b/homeassistant/components/evohome/__init__.py @@ -330,7 +330,7 @@ class EvoDevice(Entity): switchpoint = day["Switchpoints"][idx] dt_naive = datetime.strptime( - "{}T{}".format(sp_date, switchpoint["TimeOfDay"]), "%Y-%m-%dT%H:%M:%S" + f"{sp_date}T{switchpoint['TimeOfDay']}", "%Y-%m-%dT%H:%M:%S" ) spt["from"] = _local_dt_to_utc(dt_naive).isoformat()