'''simple docstring'''

import argparse
import logging
import os
from pathlib import Path
from typing import Any, Dict

import pytorch_lightning as pl
from pytorch_lightning.utilities import rank_zero_info

from transformers import (
    AdamW,
    AutoConfig,
    AutoModel,
    AutoModelForPreTraining,
    AutoModelForQuestionAnswering,
    AutoModelForSeqaSeqLM,
    AutoModelForSequenceClassification,
    AutoModelForTokenClassification,
    AutoModelWithLMHead,
    AutoTokenizer,
    PretrainedConfig,
    PreTrainedTokenizer,
)
from transformers.optimization import (
    Adafactor,
    get_cosine_schedule_with_warmup,
    get_cosine_with_hard_restarts_schedule_with_warmup,
    get_linear_schedule_with_warmup,
    get_polynomial_decay_schedule_with_warmup,
)
from transformers.utils.versions import require_version


_lowerCamelCase :				str														= logging.getLogger(__name__)

require_version("""pytorch_lightning>=1.0.4""")

_lowerCamelCase :				Tuple														= {
    """base""": AutoModel,
    """sequence-classification""": AutoModelForSequenceClassification,
    """question-answering""": AutoModelForQuestionAnswering,
    """pretraining""": AutoModelForPreTraining,
    """token-classification""": AutoModelForTokenClassification,
    """language-modeling""": AutoModelWithLMHead,
    """summarization""": AutoModelForSeqaSeqLM,
    """translation""": AutoModelForSeqaSeqLM,
}


# update this and the import above to support new schedulers from transformers.optimization
_lowerCamelCase :				Dict														= {
    """linear""": get_linear_schedule_with_warmup,
    """cosine""": get_cosine_schedule_with_warmup,
    """cosine_w_restarts""": get_cosine_with_hard_restarts_schedule_with_warmup,
    """polynomial""": get_polynomial_decay_schedule_with_warmup,
    # '': get_constant_schedule,             # not supported for now
    # '': get_constant_schedule_with_warmup, # not supported for now
}
_lowerCamelCase :				Optional[Any]														= sorted(arg_to_scheduler.keys())
_lowerCamelCase :				str														= """{""" + """, """.join(arg_to_scheduler_choices) + """}"""




class    lowerCamelCase__  (   pl.LightningModule     ):



   def __init__(    self					,      lowerCAmelCase__					,      lowerCAmelCase__=None					,      lowerCAmelCase__="base"					,      lowerCAmelCase__=None					,      lowerCAmelCase__=None					,      lowerCAmelCase__=None					,      **lowerCAmelCase__					,      )				->     str:
        """simple docstring"""





        super().__init__()
        # TODO: move to self.save_hyperparameters()
        # self.save_hyperparameters()
        # can also expand arguments into trainer signature for easier reading

        self.save_hyperparameters(lowerCAmelCase__     )
        _UpperCamelCase  :Union[str, Any]       =0
        _UpperCamelCase  :Optional[int]       =Path(self.hparams.output_dir     )
        _UpperCamelCase  :Any       =self.hparams.cache_dir if self.hparams.cache_dir else None
        if config is None:
             _UpperCamelCase  :List[Any]       =AutoConfig.from_pretrained(
                 self.hparams.config_name if self.hparams.config_name else self.hparams.model_name_or_path					,      **({"""num_labels""": num_labels} if num_labels is not None else {})					,      cache_dir=lowerCAmelCase__					,      **lowerCAmelCase__					,      )
        else:
             _UpperCamelCase  :PretrainedConfig       =config

        _UpperCamelCase  :int       =("""encoder_layerdrop""", """decoder_layerdrop""", """dropout""", """attention_dropout""")
        for p in extra_model_params:
             if getattr(self.hparams					,      lowerCAmelCase__					,      lowerCAmelCase__     ):
                  assert hasattr(self.config					,      lowerCAmelCase__     ), f'''model config doesn\'t have a `{p}` attribute'''
                  setattr(self.config					,      lowerCAmelCase__					,      getattr(self.hparams					,      lowerCAmelCase__     )     )

        if tokenizer is None:
             _UpperCamelCase  :Optional[Any]       =AutoTokenizer.from_pretrained(
                 self.hparams.tokenizer_name if self.hparams.tokenizer_name else self.hparams.model_name_or_path					,      cache_dir=lowerCAmelCase__					,      )
        else:
             _UpperCamelCase  :PreTrainedTokenizer       =tokenizer
        _UpperCamelCase  :Union[str, Any]       =MODEL_MODES[mode]
        if model is None:
             _UpperCamelCase  :Optional[int]       =self.model_type.from_pretrained(
                 self.hparams.model_name_or_path					,      from_tf=bool(""".ckpt""" in self.hparams.model_name_or_path     )					,      config=self.config					,      cache_dir=lowerCAmelCase__					,      )
        else:
             _UpperCamelCase  :Optional[Any]       =model



   def  _UpperCamelCase		(    self					,      *lowerCAmelCase__					,      **lowerCAmelCase__     )				->     Union[str, Any]:
        """simple docstring"""





        _UpperCamelCase  :Union[str, Any]       =self.model_type.from_pretrained(*lowerCAmelCase__					,      **lowerCAmelCase__     )



   def  _UpperCamelCase		(    self     )				->     Optional[Any]:
        """simple docstring"""





        _UpperCamelCase  :int       =arg_to_scheduler[self.hparams.lr_scheduler]
        _UpperCamelCase  :int       =get_schedule_func(
            self.opt					,      num_warmup_steps=self.hparams.warmup_steps					,      num_training_steps=self.total_steps()     )
        _UpperCamelCase  :Union[str, Any]       ={"""scheduler""": scheduler, """interval""": """step""", """frequency""": 1}
        return scheduler



   def  _UpperCamelCase		(    self     )				->     Optional[int]:
        """simple docstring"""





        _UpperCamelCase  :int       =self.model
        _UpperCamelCase  :List[str]       =["""bias""", """LayerNorm.weight"""]
        _UpperCamelCase  :List[Any]       =[
            {
                """params""": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay     )],
                """weight_decay""": self.hparams.weight_decay,
            },
            {
                """params""": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay     )],
                """weight_decay""": 0.0,
            },
        ]
        if self.hparams.adafactor:
             _UpperCamelCase  :Dict       =Adafactor(
                 lowerCAmelCase__					,      lr=self.hparams.learning_rate					,      scale_parameter=lowerCAmelCase__					,      relative_step=lowerCAmelCase__     )

        else:
             _UpperCamelCase  :List[str]       =AdamW(
                 lowerCAmelCase__					,      lr=self.hparams.learning_rate					,      eps=self.hparams.adam_epsilon     )
        _UpperCamelCase  :str       =optimizer

        _UpperCamelCase  :Tuple       =self.get_lr_scheduler()

        return [optimizer], [scheduler]



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__					,      lowerCAmelCase__     )				->     Tuple:
        """simple docstring"""





        return self.validation_step(lowerCAmelCase__					,      lowerCAmelCase__     )



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__     )				->     Tuple:
        """simple docstring"""





        return self.validation_end(lowerCAmelCase__     )



   def  _UpperCamelCase		(    self     )				->     int:
        """simple docstring"""





        _UpperCamelCase  :Union[str, Any]       =max(1					,      self.hparams.gpus     )  # TODO: consider num_tpu_cores
        _UpperCamelCase  :Union[str, Any]       =self.hparams.train_batch_size * self.hparams.accumulate_grad_batches * num_devices
        return (self.dataset_size / effective_batch_size) * self.hparams.max_epochs



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__     )				->     List[Any]:
        """simple docstring"""





        if mode == "test":
             _UpperCamelCase  :Union[str, Any]       =len(self.test_dataloader().dataset     )
        else:
             _UpperCamelCase  :Optional[int]       =self.get_dataloader("""train"""					,      self.hparams.train_batch_size					,      shuffle=lowerCAmelCase__     )
             _UpperCamelCase  :List[str]       =len(self.train_dataloader().dataset     )



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__					,      lowerCAmelCase__					,      lowerCAmelCase__ = False     )				->     List[str]:
        """simple docstring"""





        raise NotImplementedError("""You must implement this for your task"""     )



   def  _UpperCamelCase		(    self     )				->     Union[str, Any]:
        """simple docstring"""





        return self.train_loader



   def  _UpperCamelCase		(    self     )				->     Optional[int]:
        """simple docstring"""





        return self.get_dataloader("""dev"""					,      self.hparams.eval_batch_size					,      shuffle=lowerCAmelCase__     )



   def  _UpperCamelCase		(    self     )				->     Optional[Any]:
        """simple docstring"""





        return self.get_dataloader("""test"""					,      self.hparams.eval_batch_size					,      shuffle=lowerCAmelCase__     )



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__     )				->     int:
        """simple docstring"""





        return os.path.join(
            self.hparams.data_dir					,      """cached_{}_{}_{}""".format(
                lowerCAmelCase__					,      list(filter(lowerCAmelCase__					,      self.hparams.model_name_or_path.split("""/"""     )     )     ).pop()					,      str(self.hparams.max_seq_length     )					,      )					,      )



   @pl.utilities.rank_zero_only
   def  _UpperCamelCase		(    self					,      lowerCAmelCase__     )				->     None:
        """simple docstring"""





        _UpperCamelCase  :Any       =self.output_dir.joinpath("""best_tfmr"""     )
        _UpperCamelCase  :Optional[Any]       =self.step_count
        self.model.save_pretrained(lowerCAmelCase__     )
        self.tokenizer.save_pretrained(lowerCAmelCase__     )




   @staticmethod
   def  _UpperCamelCase		(    lowerCAmelCase__					,      lowerCAmelCase__     )				->     str:
        """simple docstring"""





        parser.add_argument(
            """--model_name_or_path"""					,      default=lowerCAmelCase__					,      type=lowerCAmelCase__					,      required=lowerCAmelCase__					,      help="""Path to pretrained model or model identifier from huggingface.co/models"""					,      )
        parser.add_argument(
            """--config_name"""					,      default=""""""					,      type=lowerCAmelCase__					,      help="""Pretrained config name or path if not the same as model_name"""     )
        parser.add_argument(
            """--tokenizer_name"""					,      default=lowerCAmelCase__					,      type=lowerCAmelCase__					,      help="""Pretrained tokenizer name or path if not the same as model_name"""					,      )
        parser.add_argument(
            """--cache_dir"""					,      default=""""""					,      type=lowerCAmelCase__					,      help="""Where do you want to store the pre-trained models downloaded from huggingface.co"""					,      )
        parser.add_argument(
            """--encoder_layerdrop"""					,      type=lowerCAmelCase__					,      help="""Encoder layer dropout probability (Optional). Goes into model.config"""					,      )
        parser.add_argument(
            """--decoder_layerdrop"""					,      type=lowerCAmelCase__					,      help="""Decoder layer dropout probability (Optional). Goes into model.config"""					,      )
        parser.add_argument(
            """--dropout"""					,      type=lowerCAmelCase__					,      help="""Dropout probability (Optional). Goes into model.config"""					,      )
        parser.add_argument(
            """--attention_dropout"""					,      type=lowerCAmelCase__					,      help="""Attention dropout probability (Optional). Goes into model.config"""					,      )
        parser.add_argument("""--learning_rate"""					,      default=5e-5					,      type=lowerCAmelCase__					,      help="""The initial learning rate for Adam."""     )
        parser.add_argument(
            """--lr_scheduler"""					,      default="""linear"""					,      choices=lowerCAmelCase__					,      metavar=lowerCAmelCase__					,      type=lowerCAmelCase__					,      help="""Learning rate scheduler"""					,      )
        parser.add_argument("""--weight_decay"""					,      default=0.0					,      type=lowerCAmelCase__					,      help="""Weight decay if we apply some."""     )
        parser.add_argument("""--adam_epsilon"""					,      default=1e-8					,      type=lowerCAmelCase__					,      help="""Epsilon for Adam optimizer."""     )
        parser.add_argument("""--warmup_steps"""					,      default=0					,      type=lowerCAmelCase__					,      help="""Linear warmup over warmup_steps."""     )
        parser.add_argument("""--num_workers"""					,      default=4					,      type=lowerCAmelCase__					,      help="""kwarg passed to DataLoader"""     )
        parser.add_argument("""--num_train_epochs"""					,      dest="""max_epochs"""					,      default=3					,      type=lowerCAmelCase__     )
        parser.add_argument("""--train_batch_size"""					,      default=32					,      type=lowerCAmelCase__     )
        parser.add_argument("""--eval_batch_size"""					,      default=32					,      type=lowerCAmelCase__     )
        parser.add_argument("""--adafactor"""					,      action="""store_true"""     )




class    lowerCamelCase__  (   pl.Callback     ):



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__					,      lowerCAmelCase__     )				->     Union[str, Any]:
        """simple docstring"""





        _UpperCamelCase  :Optional[int]       =trainer.lr_schedulers[0]["""scheduler"""]
        _UpperCamelCase  :Union[str, Any]       ={f'''lr_group_{i}''': lr for i, lr in enumerate(lr_scheduler.get_lr()     )}
        pl_module.logger.log_metrics(lowerCAmelCase__     )



   def  _UpperCamelCase		(    self					,      lowerCAmelCase__					,      lowerCAmelCase__     )				->     Optional[int]:
        """simple docstring"""





        rank_zero_info("""***** Validation results *****"""     )
        _UpperCamelCase  :Optional[Any]       =trainer.callback_metrics
        # Log results
        for key in sorted(lowerCAmelCase__     ):
             if key not in ["log", "progress_bar"]:
                  rank_zero_info("""{} = {}\n""".format(lowerCAmelCase__					,      str(metrics[key]     )     )     )




   def  _UpperCamelCase		(    self					,      lowerCAmelCase__					,      lowerCAmelCase__     )				->     Tuple:
        """simple docstring"""





        rank_zero_info("""***** Test results *****"""     )
        _UpperCamelCase  :List[str]       =trainer.callback_metrics
        # Log and save results to file
        _UpperCamelCase  :Dict       =os.path.join(pl_module.hparams.output_dir					,      """test_results.txt"""     )
        with open(lowerCAmelCase__					,      """w"""     ) as writer:
             for key in sorted(lowerCAmelCase__     ):
                  if key not in ["log", "progress_bar"]:
                       rank_zero_info("""{} = {}\n""".format(lowerCAmelCase__					,      str(metrics[key]     )     )     )
                       writer.write("""{} = {}\n""".format(lowerCAmelCase__					,      str(metrics[key]     )     )     )




def  _lowerCAmelCase				(				__a			,      __a      )  ->      None:
     '''simple docstring'''







     parser.add_argument(
         """--output_dir"""			,      default=__a			,      type=__a			,      required=__a			,      help="""The output directory where the model predictions and checkpoints will be written."""			,      )
     parser.add_argument(
         """--fp16"""			,      action="""store_true"""			,      help="""Whether to use 16-bit (mixed) precision (through NVIDIA apex) instead of 32-bit"""			,      )

     parser.add_argument(
         """--fp16_opt_level"""			,      type=__a			,      default="""O2"""			,      help=(
             """For fp16: Apex AMP optimization level selected in ['O0', 'O1', 'O2', and 'O3']."""
             """See details at https://nvidia.github.io/apex/amp.html"""
         )			,      )
     parser.add_argument("""--n_tpu_cores"""			,      dest="""tpu_cores"""			,      type=__a      )
     parser.add_argument("""--max_grad_norm"""			,      dest="""gradient_clip_val"""			,      default=1.0			,      type=__a			,      help="""Max gradient norm"""      )
     parser.add_argument("""--do_train"""			,      action="""store_true"""			,      help="""Whether to run training."""      )
     parser.add_argument("""--do_predict"""			,      action="""store_true"""			,      help="""Whether to run predictions on the test set."""      )
     parser.add_argument(
         """--gradient_accumulation_steps"""			,      dest="""accumulate_grad_batches"""			,      type=__a			,      default=1			,      help="""Number of updates steps to accumulate before performing a backward/update pass."""			,      )
     parser.add_argument("""--seed"""			,      type=__a			,      default=42			,      help="""random seed for initialization"""      )
     parser.add_argument(
         """--data_dir"""			,      default=__a			,      type=__a			,      required=__a			,      help="""The input data dir. Should contain the training files for the CoNLL-2003 NER task."""			,      )



def  _lowerCAmelCase				(				__a			,      __a			,      __a=None			,      __a=True			,      __a=[]			,      __a=None			,      __a=None			,      **__a			,      )  ->      str:
     '''simple docstring'''







     pl.seed_everything(args.seed      )

     # init model
     _UpperCamelCase  :Any       =Path(model.hparams.output_dir      )
     odir.mkdir(exist_ok=__a      )

     # add custom checkpoints
     if checkpoint_callback is None:
          _UpperCamelCase  :Dict       =pl.callbacks.ModelCheckpoint(
              filepath=args.output_dir			,      prefix="""checkpoint"""			,      monitor="""val_loss"""			,      mode="""min"""			,      save_top_k=1      )
     if early_stopping_callback:
          extra_callbacks.append(__a      )
     if logging_callback is None:
          _UpperCamelCase  :List[Any]       =LoggingCallback()

     _UpperCamelCase  :Union[str, Any]       ={}

     # TODO: remove with PyTorch 1.6 since pl uses native amp
     if args.fpaa:
          _UpperCamelCase  :Optional[Any]       =16
          _UpperCamelCase  :int       =args.fpaa_opt_level

     if args.gpus > 1:
          _UpperCamelCase  :int       ="""ddp"""

     _UpperCamelCase  :List[str]       =args.accumulate_grad_batches
     _UpperCamelCase  :Tuple       =extra_train_kwargs.get("""accelerator"""			,      __a      )
     _UpperCamelCase  :Optional[int]       =extra_train_kwargs.get("""profiler"""			,      __a      )

     _UpperCamelCase  :Any       =pl.Trainer.from_argparse_args(
         __a			,      weights_summary=__a			,      callbacks=[logging_callback] + extra_callbacks			,      logger=__a			,      checkpoint_callback=__a			,      **__a			,      )

     if args.do_train:
          trainer.fit(__a      )

     return trainer
'''simple docstring'''

import copy
import inspect

from transformers.testing_utils import require_torch, torch_device
from transformers.utils.backbone_utils import BackboneType




@require_torch
class    lowerCamelCase__  :
   __UpperCAmelCase           =						()
   __UpperCAmelCase           =						True



   def  _UpperCamelCase		(    self     )				->     Tuple:
        """simple docstring"""





        _UpperCamelCase  :List[str]       =self.config_class

        # test default config
        _UpperCamelCase  :List[Any]       =config_class()
        self.assertIsNotNone(lowerCAmelCase__     )
        _UpperCamelCase  :List[str]       =["""stem"""] + [f'''stage{idx}''' for idx in range(1					,      len(config.depths     ) + 1     )]
        self.assertEqual(config.stage_names					,      lowerCAmelCase__     )
        self.assertTrue(set(config.out_features     ).issubset(set(config.stage_names     )     )     )

        # Test out_features and out_indices are correctly set
        # out_features and out_indices both None
        _UpperCamelCase  :Any       =config_class(out_features=lowerCAmelCase__					,      out_indices=lowerCAmelCase__     )
        self.assertEqual(config.out_features					,      [config.stage_names[-1]]     )
        self.assertEqual(config.out_indices					,      [len(config.stage_names     ) - 1]     )

        # out_features and out_indices both set
        _UpperCamelCase  :int       =config_class(out_features=["""stem""", """stage1"""]					,      out_indices=[0, 1]     )
        self.assertEqual(config.out_features					,      ["""stem""", """stage1"""]     )
        self.assertEqual(config.out_indices					,      [0, 1]     )

        # Only out_features set
        _UpperCamelCase  :Dict       =config_class(out_features=["""stage1""", """stage3"""]     )
        self.assertEqual(config.out_features					,      ["""stage1""", """stage3"""]     )
        self.assertEqual(config.out_indices					,      [1, 3]     )

        # Only out_indices set
        _UpperCamelCase  :Tuple       =config_class(out_indices=[0, 2]     )
        self.assertEqual(config.out_features					,      [config.stage_names[0], config.stage_names[2]]     )
        self.assertEqual(config.out_indices					,      [0, 2]     )

        # Error raised when out_indices do not correspond to out_features
        with self.assertRaises(lowerCAmelCase__     ):
             _UpperCamelCase  :List[Any]       =config_class(out_features=["""stage1""", """stage2"""]					,      out_indices=[0, 2]     )



   def  _UpperCamelCase		(    self     )				->     List[Any]:
        """simple docstring"""





        _UpperCamelCase       ,      _UpperCamelCase  :Optional[Any]       =self.model_tester.prepare_config_and_inputs_for_common()

        for model_class in self.all_model_classes:
             _UpperCamelCase  :Union[str, Any]       =model_class(lowerCAmelCase__     )
             _UpperCamelCase  :Union[str, Any]       =inspect.signature(model.forward     )
             # signature.parameters is an OrderedDict => so arg_names order is deterministic
             _UpperCamelCase  :Tuple       =[*signature.parameters.keys()]
             _UpperCamelCase  :Any       =["""pixel_values"""]
             self.assertListEqual(arg_names[:1]					,      lowerCAmelCase__     )



   def  _UpperCamelCase		(    self     )				->     int:
        """simple docstring"""





        _UpperCamelCase       ,      _UpperCamelCase  :List[str]       =self.model_tester.prepare_config_and_inputs_for_common()

        for model_class in self.all_model_classes:
             _UpperCamelCase  :int       =model_class(lowerCAmelCase__     )
             self.assertEqual(len(model.channels     )					,      len(config.out_features     )     )
             _UpperCamelCase  :List[str]       =model.num_features
             _UpperCamelCase  :int       =[config.stage_names.index(lowerCAmelCase__     ) for feat in config.out_features]
             _UpperCamelCase  :List[str]       =[num_features[idx] for idx in out_indices]
             self.assertListEqual(model.channels					,      lowerCAmelCase__     )

             _UpperCamelCase  :Any       =copy.deepcopy(lowerCAmelCase__     )
             _UpperCamelCase  :List[Any]       =None
             _UpperCamelCase  :Optional[Any]       =model_class(lowerCAmelCase__     )
             self.assertEqual(len(model.channels     )					,      1     )
             self.assertListEqual(model.channels					,      [num_features[-1]]     )

             _UpperCamelCase  :Tuple       =copy.deepcopy(lowerCAmelCase__     )
             _UpperCamelCase  :int       =None
             _UpperCamelCase  :int       =model_class(lowerCAmelCase__     )
             self.assertEqual(len(model.channels     )					,      1     )
             self.assertListEqual(model.channels					,      [num_features[-1]]     )



   def  _UpperCamelCase		(    self     )				->     str:
        """simple docstring"""





        _UpperCamelCase       ,      _UpperCamelCase  :Any       =self.model_tester.prepare_config_and_inputs_for_common()

        for model_class in self.all_model_classes:
             _UpperCamelCase  :List[Any]       =model_class(lowerCAmelCase__     )
             model.to(lowerCAmelCase__     )
             model.eval()
             _UpperCamelCase  :str       =model(**lowerCAmelCase__     )

             self.assertEqual(len(result.feature_maps     )					,      len(config.out_features     )     )
             self.assertEqual(len(model.channels     )					,      len(config.out_features     )     )
             self.assertEqual(len(result.feature_maps     )					,      len(config.out_indices     )     )
             self.assertEqual(len(model.channels     )					,      len(config.out_indices     )     )

             # Check output of last stage is taken if out_features=None, out_indices=None
             _UpperCamelCase  :Any       =copy.deepcopy(lowerCAmelCase__     )
             _UpperCamelCase  :List[Any]       =None
             _UpperCamelCase  :Dict       =model_class(lowerCAmelCase__     )
             model.to(lowerCAmelCase__     )
             model.eval()
             _UpperCamelCase  :str       =model(**lowerCAmelCase__     )

             self.assertEqual(len(result.feature_maps     )					,      1     )
             self.assertEqual(len(model.channels     )					,      1     )

             _UpperCamelCase  :str       =copy.deepcopy(lowerCAmelCase__     )
             _UpperCamelCase  :Dict       =None
             _UpperCamelCase  :Tuple       =model_class(lowerCAmelCase__     )
             model.to(lowerCAmelCase__     )
             model.eval()
             _UpperCamelCase  :Dict       =model(**lowerCAmelCase__     )

             self.assertEqual(len(result.feature_maps     )					,      1     )
             self.assertEqual(len(model.channels     )					,      1     )

             # Check backbone can be initialized with fresh weights
             _UpperCamelCase  :Any       =copy.deepcopy(lowerCAmelCase__     )
             _UpperCamelCase  :Optional[int]       =False
             _UpperCamelCase  :Any       =model_class(lowerCAmelCase__     )
             model.to(lowerCAmelCase__     )
             model.eval()
             _UpperCamelCase  :Optional[int]       =model(**lowerCAmelCase__     )



   def  _UpperCamelCase		(    self     )				->     Optional[int]:
        """simple docstring"""





        _UpperCamelCase       ,      _UpperCamelCase  :Dict       =self.model_tester.prepare_config_and_inputs_for_common()

        for backbone_class in self.all_model_classes:
             _UpperCamelCase  :Optional[int]       =backbone_class(lowerCAmelCase__     )

             self.assertTrue(hasattr(lowerCAmelCase__					,      """backbone_type"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """stage_names"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """num_features"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """out_indices"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """out_features"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """out_feature_channels"""     )     )
             self.assertTrue(hasattr(lowerCAmelCase__					,      """channels"""     )     )

             self.assertIsInstance(backbone.backbone_type					,      lowerCAmelCase__     )
             # Verify num_features has been initialized in the backbone init
             self.assertIsNotNone(backbone.num_features     )
             self.assertTrue(len(backbone.channels     ) == len(backbone.out_indices     )     )
             self.assertTrue(len(backbone.stage_names     ) == len(backbone.num_features     )     )
             self.assertTrue(len(backbone.channels     ) <= len(backbone.num_features     )     )
             self.assertTrue(len(backbone.out_feature_channels     ) == len(backbone.stage_names     )     )




   def  _UpperCamelCase		(    self     )				->     Tuple:
        """simple docstring"""





        _UpperCamelCase       ,      _UpperCamelCase  :List[Any]       =self.model_tester.prepare_config_and_inputs_for_common()
        _UpperCamelCase  :Union[str, Any]       =inputs_dict["""pixel_values"""].shape[0]

        for backbone_class in self.all_model_classes:
             _UpperCamelCase  :str       =backbone_class(lowerCAmelCase__     )
             backbone.to(lowerCAmelCase__     )
             backbone.eval()

             _UpperCamelCase  :Any       =backbone(**lowerCAmelCase__     )

             # Test default outputs and verify feature maps
             self.assertIsInstance(outputs.feature_maps					,      lowerCAmelCase__     )
             self.assertTrue(len(outputs.feature_maps     ) == len(backbone.channels     )     )
             for feature_map, n_channels in zip(outputs.feature_maps					,      backbone.channels     ):
                  self.assertTrue(feature_map.shape[:2]					,      (batch_size, n_channels)     )
             self.assertIsNone(outputs.hidden_states     )
             self.assertIsNone(outputs.attentions     )

             # Test output_hidden_states=True
             _UpperCamelCase  :Any       =backbone(**lowerCAmelCase__					,      output_hidden_states=lowerCAmelCase__     )
             self.assertIsNotNone(outputs.hidden_states     )
             self.assertTrue(len(outputs.hidden_states     )					,      len(backbone.stage_names     )     )
             for hidden_state, n_channels in zip(outputs.hidden_states					,      backbone.channels     ):
                  self.assertTrue(hidden_state.shape[:2]					,      (batch_size, n_channels)     )

             # Test output_attentions=True
             if self.has_attentions:
                  _UpperCamelCase  :int       =backbone(**lowerCAmelCase__					,      output_attentions=lowerCAmelCase__     )
                  self.assertIsNotNone(outputs.attentions     )