code: def get_current_lr(trainer, args):
      return trainer.scheduler.state_dict().get(
          "_last_lr", [args["lr0"]]
      )[0]
  
imports: import argparse
  from copy import copy
  import logging
  import lzma
  import math
  import os
  import random
  import time
  from types import GeneratorType
  import numpy
  import torch
  from stanza.models.common.char_model import build_charlm_vocab, CharacterLanguageModel, CharacterLanguageModelTrainer
  from stanza.models.common.vocab import CharVocab
  from stanza.models.common import utils
  from stanza.models import _training_logging
label_desc: Use image node_id 12 for calling a global function with example usage: get_current_lr(trainer, args) and returns: trainer