import importlib


def find(cls_string):
    module_string = ".".join(cls_string.split(".")[:-1])
    cls_name = cls_string.split(".")[-1]
    module = importlib.import_module(module_string, package=None)
    cls = getattr(module, cls_name)
    return cls


###  grammar sugar for logging utilities  ###
import logging

logger = logging.getLogger("pytorch_lightning")

from pytorch_lightning.utilities.rank_zero import (
    rank_zero_debug,
    rank_zero_info,
    rank_zero_only,
)

debug = rank_zero_debug
info = rank_zero_info


@rank_zero_only
def warn(*args, **kwargs):
    logger.warn(*args, **kwargs)