

"""simple docstring"""




import json
import logging
import os
import random
import sys
from dataclasses import dataclass, field
from typing import Optional

import evaluate
import numpy as np
import torch
from datasets import load_dataset
from huggingface_hub import hf_hub_download
from PIL import Image
from torch import nn
from torchvision import transforms
from torchvision.transforms import functional

import transformers
from transformers import (
    AutoConfig,
    AutoImageProcessor,
    AutoModelForSemanticSegmentation,
    HfArgumentParser,
    Trainer,
    TrainingArguments,
    default_data_collator,
)
from transformers.trainer_utils import get_last_checkpoint
from transformers.utils import check_min_version, send_example_telemetry
from transformers.utils.versions import require_version
A_							:     List[Any]     =	logging.getLogger(__name__)

# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.31.0")

require_version("datasets>=2.0.0", "To fix: pip install -r examples/pytorch/semantic-segmentation/requirements.txt")

def 		A    (       snake_case__						,			snake_case__						,			snake_case__=0      ):




			'''simple docstring'''


			SCREAMING_SNAKE_CASE__									= (size, size) if isinstance(snake_case__						,			snake_case__      ) else size
			SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= img.size
			SCREAMING_SNAKE_CASE__									= size[1] - original_height if original_height < size[1] else 0
			SCREAMING_SNAKE_CASE__									= size[0] - original_width if original_width < size[0] else 0
			SCREAMING_SNAKE_CASE__									= functional.pad(snake_case__						,			(0, 0, pad_width, pad_height)						,			fill=snake_case__      )
			return img





class 				lowerCamelCase  :

			def __init__(   self			:  Union[str, Any]      ,			__UpperCAmelCase			:  List[Any]    )				->      List[Any]:
						SCREAMING_SNAKE_CASE__									= transforms





			def __call__(   self			:  Any      ,			__UpperCAmelCase			:  Union[str, Any]      ,			__UpperCAmelCase			:  Any    )				->      Tuple:
						for t in self.transforms:
									SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= t(__UpperCAmelCase      ,			__UpperCAmelCase    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Dict    )				->      Optional[int]:
						pass





			def __call__(   self			:  Optional[int]      ,			__UpperCAmelCase			:  Any      ,			__UpperCAmelCase			:  List[str]    )				->      List[str]:
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Any      ,			__UpperCAmelCase			:  Union[str, Any]    )				->      Union[str, Any]:
						SCREAMING_SNAKE_CASE__									= size





			def __call__(   self			:  List[str]      ,			__UpperCAmelCase			:  Optional[int]      ,			__UpperCAmelCase			:  Union[str, Any]    )				->      Optional[int]:
						SCREAMING_SNAKE_CASE__									= functional.resize(__UpperCAmelCase      ,			self.size    )
						SCREAMING_SNAKE_CASE__									= functional.resize(__UpperCAmelCase      ,			self.size      ,			interpolation=transforms.InterpolationMode.NEAREST    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Tuple      ,			__UpperCAmelCase			:  Optional[Any]      ,			__UpperCAmelCase			:  str=None    )				->      str:
						SCREAMING_SNAKE_CASE__									= min_size
						if max_size is None:
									SCREAMING_SNAKE_CASE__									= min_size
						SCREAMING_SNAKE_CASE__									= max_size





			def __call__(   self			:  Any      ,			__UpperCAmelCase			:  Union[str, Any]      ,			__UpperCAmelCase			:  Union[str, Any]    )				->      List[Any]:
						SCREAMING_SNAKE_CASE__									= random.randint(self.min_size      ,			self.max_size    )
						SCREAMING_SNAKE_CASE__									= functional.resize(__UpperCAmelCase      ,			__UpperCAmelCase    )
						SCREAMING_SNAKE_CASE__									= functional.resize(__UpperCAmelCase      ,			__UpperCAmelCase      ,			interpolation=transforms.InterpolationMode.NEAREST    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  str      ,			__UpperCAmelCase			:  int    )				->      Any:
						SCREAMING_SNAKE_CASE__									= size if isinstance(__UpperCAmelCase      ,			__UpperCAmelCase    ) else (size, size)





			def __call__(   self			:  str      ,			__UpperCAmelCase			:  List[str]      ,			__UpperCAmelCase			:  List[str]    )				->      List[str]:
						SCREAMING_SNAKE_CASE__									= pad_if_smaller(__UpperCAmelCase      ,			self.size    )
						SCREAMING_SNAKE_CASE__									= pad_if_smaller(__UpperCAmelCase      ,			self.size      ,			fill=2_5_5    )
						SCREAMING_SNAKE_CASE__									= transforms.RandomCrop.get_params(__UpperCAmelCase      ,			self.size    )
						SCREAMING_SNAKE_CASE__									= functional.crop(__UpperCAmelCase      ,			*__UpperCAmelCase    )
						SCREAMING_SNAKE_CASE__									= functional.crop(__UpperCAmelCase      ,			*__UpperCAmelCase    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Any      ,			__UpperCAmelCase			:  Optional[Any]    )				->      Optional[int]:
						SCREAMING_SNAKE_CASE__									= flip_prob





			def __call__(   self			:  Optional[Any]      ,			__UpperCAmelCase			:  Dict      ,			__UpperCAmelCase			:  Dict    )				->      Dict:
						if random.random() < self.flip_prob:
									SCREAMING_SNAKE_CASE__									= functional.hflip(__UpperCAmelCase    )
									SCREAMING_SNAKE_CASE__									= functional.hflip(__UpperCAmelCase    )
						return image, target





class 				lowerCamelCase  :

			def __call__(   self			:  Union[str, Any]      ,			__UpperCAmelCase			:  Optional[Any]      ,			__UpperCAmelCase			:  Union[str, Any]    )				->      str:
						SCREAMING_SNAKE_CASE__									= functional.pil_to_tensor(__UpperCAmelCase    )
						SCREAMING_SNAKE_CASE__									= torch.as_tensor(np.array(__UpperCAmelCase    )      ,			dtype=torch.intaa    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Union[str, Any]      ,			__UpperCAmelCase			:  Union[str, Any]    )				->      Tuple:
						SCREAMING_SNAKE_CASE__									= dtype





			def __call__(   self			:  Optional[int]      ,			__UpperCAmelCase			:  Optional[int]      ,			__UpperCAmelCase			:  Tuple    )				->      int:
						SCREAMING_SNAKE_CASE__									= functional.convert_image_dtype(__UpperCAmelCase      ,			self.dtype    )
						return image, target





class 				lowerCamelCase  :

			def __init__(   self			:  Optional[Any]      ,			__UpperCAmelCase			:  Dict      ,			__UpperCAmelCase			:  Any    )				->      Dict:
						SCREAMING_SNAKE_CASE__									= mean
						SCREAMING_SNAKE_CASE__									= std





			def __call__(   self			:  str      ,			__UpperCAmelCase			:  List[str]      ,			__UpperCAmelCase			:  Optional[int]    )				->      Union[str, Any]:
						SCREAMING_SNAKE_CASE__									= functional.normalize(__UpperCAmelCase      ,			mean=self.mean      ,			std=self.std    )
						return image, target





class 				lowerCamelCase  :

			def __call__(   self			:  List[Any]      ,			__UpperCAmelCase			:  Any      ,			__UpperCAmelCase			:  Tuple    )				->      Optional[Any]:
						if not isinstance(__UpperCAmelCase      ,			np.ndarray    ):
									SCREAMING_SNAKE_CASE__									= np.array(__UpperCAmelCase    ).astype(np.uinta    )
						# avoid using underflow conversion
						SCREAMING_SNAKE_CASE__									= 2_5_5
						SCREAMING_SNAKE_CASE__									= target - 1
						SCREAMING_SNAKE_CASE__									= 2_5_5

						SCREAMING_SNAKE_CASE__									= Image.fromarray(__UpperCAmelCase    )
						return image, target





@dataclass
class 				lowerCamelCase  :
			lowerCamelCase__				:						Optional[str]   						=							field(
			    default='segments/sidewalk-semantic'     ,metadata={
			        'help': 'Name of a dataset from the hub (could be your own, possibly private dataset hosted on the hub).'
			    }     ,)
			lowerCamelCase__				:						Optional[str]   						=							field(
			    default=A__     ,metadata={'help': 'The configuration name of the dataset to use (via the datasets library).'}     )
			lowerCamelCase__				:						Optional[float]   						=							field(
			    default=0.1_5     ,metadata={'help': 'Percent to split off of train for validation.'}     )
			lowerCamelCase__				:						Optional[int]   						=							field(
			    default=A__     ,metadata={
			        'help': (
			            'For debugging purposes or quicker training, truncate the number of training examples to this '
			            'value if set.'
			        )
			    }     ,)
			lowerCamelCase__				:						Optional[int]   						=							field(
			    default=A__     ,metadata={
			        'help': (
			            'For debugging purposes or quicker training, truncate the number of evaluation examples to this '
			            'value if set.'
			        )
			    }     ,)
			lowerCamelCase__				:						Optional[bool]   						=							field(
			    default=A__     ,metadata={'help': 'Whether or not to reduce all labels by 1 and replace background by 255.'}     ,)

			def    SCREAMING_SNAKE_CASE			(   self			:  List[str]    )				->      Dict:
						if self.dataset_name is None and (self.train_dir is None and self.validation_dir is None):
									raise ValueError(
									    """You must specify either a dataset name from the hub or a train and/or validation directory."""    )





@dataclass
class 				lowerCamelCase  :
			lowerCamelCase__				:						str   						=							field(
			    default='nvidia/mit-b0'     ,metadata={'help': 'Path to pretrained model or model identifier from huggingface.co/models'}     ,)
			lowerCamelCase__				:						Optional[str]   						=							field(
			    default=A__     ,metadata={'help': 'Pretrained config name or path if not the same as model_name'}     )
			lowerCamelCase__				:						Optional[str]   						=							field(
			    default=A__     ,metadata={'help': 'Where do you want to store the pretrained models downloaded from s3'}     )
			lowerCamelCase__				:						str   						=							field(
			    default='main'     ,metadata={'help': 'The specific model version to use (can be a branch name, tag name or commit id).'}     ,)
			lowerCamelCase__				:						str   						=							field(default=A__     ,metadata={'help': 'Name or path of preprocessor config.'}     )
			lowerCamelCase__				:						bool   						=							field(
			    default=A__     ,metadata={
			        'help': (
			            'Will use the token generated when running `huggingface-cli login` (necessary to use this script '
			            'with private models).'
			        )
			    }     ,)

def 		A    (       ):




			'''simple docstring'''


			SCREAMING_SNAKE_CASE__									= HfArgumentParser((ModelArguments, DataTrainingArguments, TrainingArguments)      )
			if len(sys.argv      ) == 2 and sys.argv[1].endswith(""".json"""      ):
						# If we pass only one argument to the script and it's the path to a json file,
						# let's parse it to get our arguments.
						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]      )      )
			else:
						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= parser.parse_args_into_dataclasses()

			# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
			# information sent is the one passed as arguments along with your Python/PyTorch versions.
			send_example_telemetry("""run_semantic_segmentation"""						,			snake_case__						,			snake_case__      )

			# Setup logging
			logging.basicConfig(
			    format="""%(asctime)s - %(levelname)s - %(name)s - %(message)s"""						,			datefmt="""%m/%d/%Y %H:%M:%S"""						,			handlers=[logging.StreamHandler(sys.stdout      )]						,			)

			if training_args.should_log:
						# The default of training_args.log_level is passive, so we set log level at info here to have that default.
						transformers.utils.logging.set_verbosity_info()

			SCREAMING_SNAKE_CASE__									= training_args.get_process_log_level()
			logger.setLevel(snake_case__      )
			transformers.utils.logging.set_verbosity(snake_case__      )
			transformers.utils.logging.enable_default_handler()
			transformers.utils.logging.enable_explicit_format()

			# Log on each process the small summary:
			logger.warning(
			    f"""Process rank: {training_args.local_rank}, device: {training_args.device}, n_gpu: {training_args.n_gpu}"""
			    + f"""distributed training: {bool(training_args.local_rank != -1      )}, 16-bits training: {training_args.fpaa}"""      )
			logger.info(f"""Training/evaluation parameters {training_args}"""      )

			# Detecting last checkpoint.
			SCREAMING_SNAKE_CASE__									= None
			if os.path.isdir(training_args.output_dir      ) and training_args.do_train and not training_args.overwrite_output_dir:
						SCREAMING_SNAKE_CASE__									= get_last_checkpoint(training_args.output_dir      )
						if last_checkpoint is None and len(os.listdir(training_args.output_dir      )      ) > 0:
									raise ValueError(
									    f"""Output directory ({training_args.output_dir}) already exists and is not empty. """
									    """Use --overwrite_output_dir to overcome."""      )
						elif last_checkpoint is not None and training_args.resume_from_checkpoint is None:
									logger.info(
									    f"""Checkpoint detected, resuming training at {last_checkpoint}. To avoid this behavior, change """
									    """the `--output_dir` or add `--overwrite_output_dir` to train from scratch."""      )

    # Load dataset
    # In distributed training, the load_dataset function guarantees that only one local process can concurrently
    # download the dataset.
    # TODO support datasets from local folders
			SCREAMING_SNAKE_CASE__									= load_dataset(data_args.dataset_name						,			cache_dir=model_args.cache_dir      )

			# Rename column names to standardized names (only "image" and "label" need to be present)
			if "pixel_values" in dataset["train"].column_names:
						SCREAMING_SNAKE_CASE__									= dataset.rename_columns({"""pixel_values""": """image"""}      )
			if "annotation" in dataset["train"].column_names:
						SCREAMING_SNAKE_CASE__									= dataset.rename_columns({"""annotation""": """label"""}      )

			# If we don't have a validation split, split off a percentage of train as validation.
			SCREAMING_SNAKE_CASE__									= None if """validation""" in dataset.keys() else data_args.train_val_split
			if isinstance(data_args.train_val_split						,			snake_case__      ) and data_args.train_val_split > 0.0:
						SCREAMING_SNAKE_CASE__									= dataset["""train"""].train_test_split(data_args.train_val_split      )
						SCREAMING_SNAKE_CASE__									= split["""train"""]
						SCREAMING_SNAKE_CASE__									= split["""test"""]

			# Prepare label mappings.
			# We'll include these in the model's config to get human readable labels in the Inference API.
			if data_args.dataset_name == "scene_parse_150":
						SCREAMING_SNAKE_CASE__									= """huggingface/label-files"""
						SCREAMING_SNAKE_CASE__									= """ade20k-id2label.json"""
			else:
						SCREAMING_SNAKE_CASE__									= data_args.dataset_name
						SCREAMING_SNAKE_CASE__									= """id2label.json"""
			SCREAMING_SNAKE_CASE__									= json.load(open(hf_hub_download(snake_case__						,			snake_case__						,			repo_type="""dataset"""      )						,			"""r"""      )      )
			SCREAMING_SNAKE_CASE__									= {int(snake_case__      ): v for k, v in idalabel.items()}
			SCREAMING_SNAKE_CASE__									= {v: str(snake_case__      ) for k, v in idalabel.items()}

			# Load the mean IoU metric from the datasets package
			SCREAMING_SNAKE_CASE__									= evaluate.load("""mean_iou"""      )

			# Define our compute_metrics function. It takes an `EvalPrediction` object (a namedtuple with a
			# predictions and label_ids field) and has to return a dictionary string to float.
			@torch.no_grad()
			def compute_metrics(snake_case__      ):
						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= eval_pred
						SCREAMING_SNAKE_CASE__									= torch.from_numpy(snake_case__      )
						# scale the logits to the size of the label
						SCREAMING_SNAKE_CASE__									= nn.functional.interpolate(
						    snake_case__						,			size=labels.shape[-2:]						,			mode="""bilinear"""						,			align_corners=snake_case__						,			).argmax(dim=1      )

						SCREAMING_SNAKE_CASE__									= logits_tensor.detach().cpu().numpy()
						SCREAMING_SNAKE_CASE__									= metric.compute(
						    predictions=snake_case__						,			references=snake_case__						,			num_labels=len(snake_case__      )						,			ignore_index=0						,			reduce_labels=image_processor.do_reduce_labels						,			)
						# add per category metrics as individual key-value pairs
						SCREAMING_SNAKE_CASE__									= metrics.pop("""per_category_accuracy"""      ).tolist()
						SCREAMING_SNAKE_CASE__									= metrics.pop("""per_category_iou"""      ).tolist()

						metrics.update({f"""accuracy_{idalabel[i]}""": v for i, v in enumerate(snake_case__      )}      )
						metrics.update({f"""iou_{idalabel[i]}""": v for i, v in enumerate(snake_case__      )}      )

						return metrics

			SCREAMING_SNAKE_CASE__									= AutoConfig.from_pretrained(
			    model_args.config_name or model_args.model_name_or_path						,			labelaid=snake_case__						,			idalabel=snake_case__						,			cache_dir=model_args.cache_dir						,			revision=model_args.model_revision						,			use_auth_token=True if model_args.use_auth_token else None						,			)
			SCREAMING_SNAKE_CASE__									= AutoModelForSemanticSegmentation.from_pretrained(
			    model_args.model_name_or_path						,			from_tf=bool(""".ckpt""" in model_args.model_name_or_path      )						,			config=snake_case__						,			cache_dir=model_args.cache_dir						,			revision=model_args.model_revision						,			use_auth_token=True if model_args.use_auth_token else None						,			)
			SCREAMING_SNAKE_CASE__									= AutoImageProcessor.from_pretrained(
			    model_args.image_processor_name or model_args.model_name_or_path						,			cache_dir=model_args.cache_dir						,			revision=model_args.model_revision						,			use_auth_token=True if model_args.use_auth_token else None						,			)

			# Define torchvision transforms to be applied to each image + target.
			# Not that straightforward in torchvision: https://github.com/pytorch/vision/issues/9
			# Currently based on official torchvision references: https://github.com/pytorch/vision/blob/main/references/segmentation/transforms.py
			if "shortest_edge" in image_processor.size:
						# We instead set the target size as (shortest_edge, shortest_edge) to here to ensure all images are batchable.
						SCREAMING_SNAKE_CASE__									= (image_processor.size["""shortest_edge"""], image_processor.size["""shortest_edge"""])
			else:
						SCREAMING_SNAKE_CASE__									= (image_processor.size["""height"""], image_processor.size["""width"""])
			SCREAMING_SNAKE_CASE__									= Compose(
			    [
			        ReduceLabels() if data_args.reduce_labels else Identity(),
			        RandomCrop(size=snake_case__      ),
			        RandomHorizontalFlip(flip_prob=0.5      ),
			        PILToTensor(),
			        ConvertImageDtype(torch.float      ),
			        Normalize(mean=image_processor.image_mean						,			std=image_processor.image_std      ),
			    ]      )
			# Define torchvision transform to be applied to each image.
			# jitter = ColorJitter(brightness=0.25, contrast=0.25, saturation=0.25, hue=0.1)
			SCREAMING_SNAKE_CASE__									= Compose(
			    [
			        ReduceLabels() if data_args.reduce_labels else Identity(),
			        Resize(size=snake_case__      ),
			        PILToTensor(),
			        ConvertImageDtype(torch.float      ),
			        Normalize(mean=image_processor.image_mean						,			std=image_processor.image_std      ),
			    ]      )

			def preprocess_train(snake_case__      ):
						SCREAMING_SNAKE_CASE__									= []
						SCREAMING_SNAKE_CASE__									= []
						for image, target in zip(example_batch["""image"""]						,			example_batch["""label"""]      ):
									SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= train_transforms(image.convert("""RGB"""      )						,			snake_case__      )
									pixel_values.append(snake_case__      )
									labels.append(snake_case__      )

						SCREAMING_SNAKE_CASE__									= {}
						SCREAMING_SNAKE_CASE__									= torch.stack(snake_case__      )
						SCREAMING_SNAKE_CASE__									= torch.stack(snake_case__      )

						return encoding

			def preprocess_val(snake_case__      ):
						SCREAMING_SNAKE_CASE__									= []
						SCREAMING_SNAKE_CASE__									= []
						for image, target in zip(example_batch["""image"""]						,			example_batch["""label"""]      ):
									SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__									= val_transforms(image.convert("""RGB"""      )						,			snake_case__      )
									pixel_values.append(snake_case__      )
									labels.append(snake_case__      )

						SCREAMING_SNAKE_CASE__									= {}
						SCREAMING_SNAKE_CASE__									= torch.stack(snake_case__      )
						SCREAMING_SNAKE_CASE__									= torch.stack(snake_case__      )

						return encoding

			if training_args.do_train:
						if "train" not in dataset:
									raise ValueError("""--do_train requires a train dataset"""      )
						if data_args.max_train_samples is not None:
									SCREAMING_SNAKE_CASE__									= (
									    dataset["""train"""].shuffle(seed=training_args.seed      ).select(range(data_args.max_train_samples      )      )
									)
						# Set the training transforms
						dataset["train"].set_transform(snake_case__      )

			if training_args.do_eval:
						if "validation" not in dataset:
									raise ValueError("""--do_eval requires a validation dataset"""      )
						if data_args.max_eval_samples is not None:
									SCREAMING_SNAKE_CASE__									= (
									    dataset["""validation"""].shuffle(seed=training_args.seed      ).select(range(data_args.max_eval_samples      )      )
									)
						# Set the validation transforms
						dataset["validation"].set_transform(snake_case__      )

			# Initalize our trainer
			SCREAMING_SNAKE_CASE__									= Trainer(
			    model=snake_case__						,			args=snake_case__						,			train_dataset=dataset["""train"""] if training_args.do_train else None						,			eval_dataset=dataset["""validation"""] if training_args.do_eval else None						,			compute_metrics=snake_case__						,			tokenizer=snake_case__						,			data_collator=snake_case__						,			)

			# Training
			if training_args.do_train:
						SCREAMING_SNAKE_CASE__									= None
						if training_args.resume_from_checkpoint is not None:
									SCREAMING_SNAKE_CASE__									= training_args.resume_from_checkpoint
						elif last_checkpoint is not None:
									SCREAMING_SNAKE_CASE__									= last_checkpoint
						SCREAMING_SNAKE_CASE__									= trainer.train(resume_from_checkpoint=snake_case__      )
						trainer.save_model()
						trainer.log_metrics("""train"""						,			train_result.metrics      )
						trainer.save_metrics("""train"""						,			train_result.metrics      )
						trainer.save_state()

			# Evaluation
			if training_args.do_eval:
						SCREAMING_SNAKE_CASE__									= trainer.evaluate()
						trainer.log_metrics("""eval"""						,			snake_case__      )
						trainer.save_metrics("""eval"""						,			snake_case__      )

			# Write model card and (optionally) push to hub
			SCREAMING_SNAKE_CASE__									= {
			    """finetuned_from""": model_args.model_name_or_path,
			    """dataset""": data_args.dataset_name,
			    """tags""": ["""image-segmentation""", """vision"""],
			}
			if training_args.push_to_hub:
						trainer.push_to_hub(**snake_case__      )
			else:
						trainer.create_model_card(**snake_case__      )


if __name__ == "__main__":
						main()





"""simple docstring"""




def 		A    (       snake_case__						,			snake_case__      ):




			'''simple docstring'''


			return a + b


if __name__ == "__main__":
						A_							:     List[str]     =	5
						A_							:     Optional[int]     =	6
						print(F'The sum of {a} + {b} is {add(a, b)}')


