Reference Progress funcreport# report( callback: Callable[[Progress], None] | None, task: str, current: int, total: int | None = None, unit: str = 'item', ) → None# Send a Progress update if a callback was given. Parameters: callback (Callable[[Progress], None] | None) – The callback, or None to do nothing. task (str) – The current stage. current (int) – The units finished so far. total (int | None) – The units expected, or None if unknown. unit (str) – What is counted.