def __init__()

in ignite/handlers/param_scheduler.py [0:0]

• 21 lines of code
• 13 McCabe index (conditional complexity)

    def __init__(self, schedulers: List[ParamScheduler], names: Optional[List[str]] = None, save_history: bool = False):
        if not isinstance(schedulers, Sequence):
            raise TypeError(f"Argument schedulers should be a list/tuple, but given {schedulers}")

        if not all(isinstance(scheduler, ParamScheduler) for scheduler in schedulers):
            raise ValueError(
                f"Argument schedulers should be a list/tuple of parameter schedulers, but given {schedulers}"
            )

        if names is None:
            names = [s.param_name for s in schedulers]

        if not isinstance(names, (list, tuple)):
            raise TypeError(f"Argument names should be a list/tuple, but given {names}")

        if not all(isinstance(n, str) for n in names):
            raise ValueError(f"Argument names should be a list/tuple of parameter scheduler's names, but given {names}")

        if len(names) != len(schedulers):
            raise ValueError(f"{len(schedulers)} should be equal {len(names)}")

        self.schedulers = schedulers
        self.names = names

        # schedulers should have save_history sync with ParamGroupScheduler
        for s in schedulers:
            s.save_history = save_history

        self.optimizer = [s.optimizer for s in self.schedulers]
        self.param_name = [s.param_name for s in self.schedulers]