


import json
import logging
import os
import re
import sys
from dataclasses import dataclass, field
from typing import Any, Dict, List, Optional, Union

import datasets
import numpy as np
import torch
import torchaudio
from packaging import version
from torch import nn

import transformers
from transformers import (
    HfArgumentParser,
    Trainer,
    TrainingArguments,
    WavaVecaCTCTokenizer,
    WavaVecaFeatureExtractor,
    WavaVecaForCTC,
    WavaVecaProcessor,
    is_apex_available,
    set_seed,
)
from transformers.trainer_utils import get_last_checkpoint, is_main_process


if is_apex_available():
	from apex import amp


if version.parse(version.parse(torch.__version__).base_version) >= version.parse('1.6'):
	A				:       Any      =  True
	from torch.cuda.amp import autocast

A				:       str      =  logging.getLogger(__name__)





def 						_lowerCAmelCase							(     _lowerCAmelCase=None   ,						_lowerCAmelCase=None			)    ->						Optional[int]:


						'''simple docstring'''






						return field(default_factory=lambda: default   ,						metadata=_lowerCAmelCase			)






@dataclass
class      UpperCamelCase:
					snake_case_		:					str    					=						field(
					    metadata={"""help""": """Path to pretrained model or model identifier from huggingface.co/models"""} )
					snake_case_		:					Optional[str]    					=						field(
					    default=_a  ,				metadata={"""help""": """Where do you want to store the pretrained models downloaded from huggingface.co"""}  ,				)
					snake_case_		:					Optional[bool]    					=						field(
					    default=_a  ,				metadata={"""help""": """Whether to freeze the feature extractor layers of the model."""} )
					snake_case_		:					Optional[float]    					=						field(
					    default=0.1  ,				metadata={"""help""": """The dropout ratio for the attention probabilities."""} )
					snake_case_		:					Optional[float]    					=						field(
					    default=0.1  ,				metadata={"""help""": """The dropout ratio for activations inside the fully connected layer."""} )
					snake_case_		:					Optional[float]    					=						field(
					    default=0.1  ,				metadata={
					        """help""": """The dropout probabilitiy for all fully connected layers in the embeddings, encoder, and pooler."""
					    }  ,				)
					snake_case_		:					Optional[float]    					=						field(
					    default=0.1  ,				metadata={"""help""": """The dropout probabilitiy for all 1D convolutional layers in feature extractor."""}  ,				)
					snake_case_		:					Optional[float]    					=						field(
					    default=0.05  ,				metadata={
					        """help""": (
					            """Propability of each feature vector along the time axis to be chosen as the start of the vector"""
					            """span to be masked. Approximately ``mask_time_prob * sequence_length // mask_time_length`` feature"""
					            """vectors will be masked along the time axis. This is only relevant if ``apply_spec_augment is True``."""
					        )
					    }  ,				)
					snake_case_		:					Optional[float]    					=						field(default=0.0  ,				metadata={"""help""": """The LayerDrop probability."""} )






@dataclass
class      UpperCamelCase:
					snake_case_		:					Optional[str]    					=						field(
					    default=_a  ,				metadata={"""help""": """The configuration name of the dataset to use (via the datasets library)."""} )
					snake_case_		:					Optional[str]    					=						field(
					    default="""train+validation"""  ,				metadata={
					        """help""": """The name of the training data set split to use (via the datasets library). Defaults to 'train'"""
					    }  ,				)
					snake_case_		:					bool    					=						field(
					    default=_a  ,				metadata={"""help""": """Overwrite the cached preprocessed datasets or not."""} )
					snake_case_		:					Optional[int]    					=						field(
					    default=_a  ,				metadata={"""help""": """The number of processes to use for the preprocessing."""}  ,				)
					snake_case_		:					Optional[int]    					=						field(
					    default=_a  ,				metadata={
					        """help""": (
					            """For debugging purposes or quicker training, truncate the number of training examples to this """
					            """value if set."""
					        )
					    }  ,				)
					snake_case_		:					Optional[int]    					=						field(
					    default=_a  ,				metadata={
					        """help""": (
					            """For debugging purposes or quicker training, truncate the number of validation examples to this """
					            """value if set."""
					        )
					    }  ,				)
					snake_case_		:					List[str]    					=						list_field(
					    default=[""",""", """?""", """.""", """!""", """-""", """;""", """:""", """\"\"""", """%""", """'""", """\"""", """�"""]  ,				metadata={"""help""": """A list of characters to remove from the transcripts."""}  ,				)






@dataclass
class      UpperCamelCase:
					snake_case_		:					WavaVecaProcessor
					snake_case_		:					Union[bool, str]    					=						True
					snake_case_		:					Optional[int]    					=						None
					snake_case_		:					Optional[int]    					=						None
					snake_case_		:					Optional[int]    					=						None
					snake_case_		:					Optional[int]    					=						None


					def __call__(    self						:		Any  ,     SCREAMING_SNAKE_CASE						:		List[Dict[str, Union[List[int], torch.Tensor]]]    )      ->						Dict[str, torch.Tensor]:




											'''simple docstring'''

											__snake_case				=		[{"input_values": feature["input_values"]} for feature in features]
											__snake_case				=		[{"input_ids": feature["labels"]} for feature in features]

											__snake_case				=		self.processor.pad(
											    SCREAMING_SNAKE_CASE  ,     padding=self.padding  ,     max_length=self.max_length  ,     pad_to_multiple_of=self.pad_to_multiple_of  ,     return_tensors="pt"  ,     )
											__snake_case				=		self.processor.pad(
											    labels=SCREAMING_SNAKE_CASE  ,     padding=self.padding  ,     max_length=self.max_length_labels  ,     pad_to_multiple_of=self.pad_to_multiple_of_labels  ,     return_tensors="pt"  ,     )

											# replace padding with -100 to ignore loss correctly
											__snake_case				=		labels_batch["input_ids"].masked_fill(labels_batch.attention_mask.ne(1    )  ,     -1_0_0    )

											__snake_case				=		labels

											return batch






class      UpperCamelCase(	_a ):


					def 				SCREAMING_SNAKE_CASE_	(    self						:		int  ,     SCREAMING_SNAKE_CASE						:		nn.Module  ,     SCREAMING_SNAKE_CASE						:		Dict[str, Union[torch.Tensor, Any]]    )      ->						torch.Tensor:




											'''simple docstring'''

											model.train()
											__snake_case				=		self._prepare_inputs(SCREAMING_SNAKE_CASE    )

											if self.use_amp:
																	with autocast():
																							__snake_case				=		self.compute_loss(SCREAMING_SNAKE_CASE  ,     SCREAMING_SNAKE_CASE    )
											else:
																	__snake_case				=		self.compute_loss(SCREAMING_SNAKE_CASE  ,     SCREAMING_SNAKE_CASE    )

											if self.args.n_gpu > 1:
																	if model.module.config.ctc_loss_reduction == "mean":
																							__snake_case				=		loss.mean()
																	elif model.module.config.ctc_loss_reduction == "sum":
																							__snake_case				=		loss.sum() / (inputs["labels"] >= 0).sum()
																	else:
																							raise ValueError(f'''{model.config.ctc_loss_reduction} is not valid. Choose one of [\'mean\', \'sum\']'''    )

											if self.args.gradient_accumulation_steps > 1:
																	__snake_case				=		loss / self.args.gradient_accumulation_steps

											if self.use_amp:
																	self.scaler.scale(SCREAMING_SNAKE_CASE    ).backward()
											elif self.use_apex:
																	with amp.scale_loss(SCREAMING_SNAKE_CASE  ,     self.optimizer    ) as scaled_loss:
																							scaled_loss.backward()
											elif self.deepspeed:
																	self.deepspeed.backward(SCREAMING_SNAKE_CASE    )
											else:
																	loss.backward()

											return loss.detach()





def 						_lowerCAmelCase							(     )    ->						List[str]:


						'''simple docstring'''






						__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.
												__snake_case		,       __snake_case		,       __snake_case				=		parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]			)			)
						else:
												__snake_case		,       __snake_case		,       __snake_case				=		parser.parse_args_into_dataclasses()

						# Detecting last checkpoint.
						__snake_case				=		None
						if os.path.isdir(training_args.output_dir			) and training_args.do_train and not training_args.overwrite_output_dir:
												__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:
																		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."			)

    # 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			)]   ,						)
						logger.setLevel(logging.INFO if is_main_process(training_args.local_rank			) else logging.WARN			)

						# 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}'''			)
						# Set the verbosity to info of the Transformers logger (on main process only):
						if is_main_process(training_args.local_rank			):
												transformers.utils.logging.set_verbosity_info()
						logger.info("Training/evaluation parameters %s"   ,						_lowerCAmelCase			)

						# Set seed before initializing model.
						set_seed(training_args.seed			)

						# Get the datasets:
						__snake_case				=		datasets.load_dataset(
						    "common_voice"   ,						data_args.dataset_config_name   ,						split=data_args.train_split_name			)
						__snake_case				=		datasets.load_dataset("common_voice"   ,						data_args.dataset_config_name   ,						split="test"			)

						# Create and save tokenizer
						__snake_case				=		F'''[{''.join(data_args.chars_to_ignore			)}]'''

						def remove_special_characters(_lowerCAmelCase			):
												__snake_case				=		re.sub(_lowerCAmelCase   ,						""   ,						batch["sentence"]			).lower() + " "
												return batch

						__snake_case				=		train_dataset.map(_lowerCAmelCase   ,						remove_columns=["sentence"]			)
						__snake_case				=		eval_dataset.map(_lowerCAmelCase   ,						remove_columns=["sentence"]			)

						def extract_all_chars(_lowerCAmelCase			):
												__snake_case				=		" ".join(batch["text"]			)
												__snake_case				=		list(set(_lowerCAmelCase			)			)
												return {"vocab": [vocab], "all_text": [all_text]}

						__snake_case				=		train_dataset.map(
						    _lowerCAmelCase   ,						batched=_lowerCAmelCase   ,						batch_size=-1   ,						keep_in_memory=_lowerCAmelCase   ,						remove_columns=train_dataset.column_names   ,						)
						__snake_case				=		train_dataset.map(
						    _lowerCAmelCase   ,						batched=_lowerCAmelCase   ,						batch_size=-1   ,						keep_in_memory=_lowerCAmelCase   ,						remove_columns=eval_dataset.column_names   ,						)

						__snake_case				=		list(set(vocab_train["vocab"][0]			) | set(vocab_test["vocab"][0]			)			)
						__snake_case				=		{v: k for k, v in enumerate(_lowerCAmelCase			)}
						__snake_case				=		vocab_dict[" "]
						del vocab_dict[" "]
						__snake_case				=		len(_lowerCAmelCase			)
						__snake_case				=		len(_lowerCAmelCase			)

						with open("vocab.json"   ,						"w"			) as vocab_file:
												json.dump(_lowerCAmelCase   ,						_lowerCAmelCase			)

						# Load pretrained model and tokenizer
						#
						# Distributed training:
						# The .from_pretrained methods guarantee that only one local process can concurrently
						# download model & vocab.
						__snake_case				=		WavaVecaCTCTokenizer(
						    "vocab.json"   ,						unk_token="[UNK]"   ,						pad_token="[PAD]"   ,						word_delimiter_token="|"   ,						)
						__snake_case				=		WavaVecaFeatureExtractor(
						    feature_size=1   ,						sampling_rate=1_6000   ,						padding_value=0.0   ,						do_normalize=_lowerCAmelCase   ,						return_attention_mask=_lowerCAmelCase			)
						__snake_case				=		WavaVecaProcessor(feature_extractor=_lowerCAmelCase   ,						tokenizer=_lowerCAmelCase			)
						__snake_case				=		WavaVecaForCTC.from_pretrained(
						    model_args.model_name_or_path   ,						cache_dir=model_args.cache_dir   ,						activation_dropout=model_args.activation_dropout   ,						attention_dropout=model_args.attention_dropout   ,						hidden_dropout=model_args.hidden_dropout   ,						feat_proj_dropout=model_args.feat_proj_dropout   ,						mask_time_prob=model_args.mask_time_prob   ,						gradient_checkpointing=training_args.gradient_checkpointing   ,						layerdrop=model_args.layerdrop   ,						ctc_loss_reduction="mean"   ,						pad_token_id=processor.tokenizer.pad_token_id   ,						vocab_size=len(processor.tokenizer			)   ,						)

						if data_args.max_train_samples is not None:
												__snake_case				=		min(len(_lowerCAmelCase			)   ,						data_args.max_train_samples			)
												__snake_case				=		train_dataset.select(range(_lowerCAmelCase			)			)

						if data_args.max_val_samples is not None:
												__snake_case				=		eval_dataset.select(range(data_args.max_val_samples			)			)

						__snake_case				=		torchaudio.transforms.Resample(4_8000   ,						1_6000			)

						# Preprocessing the datasets.
						# We need to read the aduio files as arrays and tokenize the targets.
						def speech_file_to_array_fn(_lowerCAmelCase			):
												__snake_case		,       __snake_case				=		torchaudio.load(batch["path"]			)
												__snake_case				=		resampler(_lowerCAmelCase			).squeeze().numpy()
												__snake_case				=		1_6000
												__snake_case				=		batch["text"]
												return batch

						__snake_case				=		train_dataset.map(
						    _lowerCAmelCase   ,						remove_columns=train_dataset.column_names   ,						num_proc=data_args.preprocessing_num_workers   ,						)
						__snake_case				=		eval_dataset.map(
						    _lowerCAmelCase   ,						remove_columns=eval_dataset.column_names   ,						num_proc=data_args.preprocessing_num_workers   ,						)

						def prepare_dataset(_lowerCAmelCase			):
												# check that all files have the correct sampling rate
												assert (
												    len(set(batch["sampling_rate"]			)			) == 1
												), F'''Make sure all inputs have the same sampling rate of {processor.feature_extractor.sampling_rate}.'''

												__snake_case				=		processor(
												    audio=batch["speech"]   ,						text=batch["target_text"]   ,						sampling_rate=batch["sampling_rate"][0]			)
												batch.update(_lowerCAmelCase			)
												return batch

						__snake_case				=		train_dataset.map(
						    _lowerCAmelCase   ,						remove_columns=train_dataset.column_names   ,						batch_size=training_args.per_device_train_batch_size   ,						batched=_lowerCAmelCase   ,						num_proc=data_args.preprocessing_num_workers   ,						)
						__snake_case				=		eval_dataset.map(
						    _lowerCAmelCase   ,						remove_columns=eval_dataset.column_names   ,						batch_size=training_args.per_device_train_batch_size   ,						batched=_lowerCAmelCase   ,						num_proc=data_args.preprocessing_num_workers   ,						)

						# Metric
						__snake_case				=		datasets.load_metric("wer"			)

						def compute_metrics(_lowerCAmelCase			):
												__snake_case				=		pred.predictions
												__snake_case				=		np.argmax(_lowerCAmelCase   ,						axis=-1			)

												__snake_case				=		processor.tokenizer.pad_token_id

												__snake_case				=		processor.batch_decode(_lowerCAmelCase			)
												# we do not want to group tokens when computing the metrics
												__snake_case				=		processor.batch_decode(pred.label_ids   ,						group_tokens=_lowerCAmelCase			)

												__snake_case				=		wer_metric.compute(predictions=_lowerCAmelCase   ,						references=_lowerCAmelCase			)

												return {"wer": wer}

						if model_args.freeze_feature_extractor:
												model.freeze_feature_extractor()

						# Data collator
						__snake_case				=		DataCollatorCTCWithPadding(processor=_lowerCAmelCase   ,						padding=_lowerCAmelCase			)

						# Initialize our Trainer
						__snake_case				=		CTCTrainer(
						    model=_lowerCAmelCase   ,						data_collator=_lowerCAmelCase   ,						args=_lowerCAmelCase   ,						compute_metrics=_lowerCAmelCase   ,						train_dataset=train_dataset if training_args.do_train else None   ,						eval_dataset=eval_dataset if training_args.do_eval else None   ,						tokenizer=processor.feature_extractor   ,						)

						# Training
						if training_args.do_train:
												if last_checkpoint is not None:
																		__snake_case				=		last_checkpoint
												elif os.path.isdir(model_args.model_name_or_path			):
																		__snake_case				=		model_args.model_name_or_path
												else:
																		__snake_case				=		None

												# Save the feature_extractor and the tokenizer
												if is_main_process(training_args.local_rank			):
																		processor.save_pretrained(training_args.output_dir			)

												__snake_case				=		trainer.train(resume_from_checkpoint=_lowerCAmelCase			)
												trainer.save_model()

												__snake_case				=		train_result.metrics
												__snake_case				=		(
												    data_args.max_train_samples if data_args.max_train_samples is not None else len(_lowerCAmelCase			)
												)
												__snake_case				=		min(_lowerCAmelCase   ,						len(_lowerCAmelCase			)			)

												trainer.log_metrics("train"   ,						_lowerCAmelCase			)
												trainer.save_metrics("train"   ,						_lowerCAmelCase			)
												trainer.save_state()

						# Evaluation
						__snake_case				=		{}
						if training_args.do_eval:
												logger.info("*** Evaluate ***"			)
												__snake_case				=		trainer.evaluate()
												__snake_case				=		data_args.max_val_samples if data_args.max_val_samples is not None else len(_lowerCAmelCase			)
												__snake_case				=		min(_lowerCAmelCase   ,						len(_lowerCAmelCase			)			)

												trainer.log_metrics("eval"   ,						_lowerCAmelCase			)
												trainer.save_metrics("eval"   ,						_lowerCAmelCase			)

						return results


if __name__ == "__main__":
	main()









import inspect
import unittest






class      UpperCamelCase(	unittest.TestCase ):


					def 				SCREAMING_SNAKE_CASE_	(    self						:		Dict    )      ->						List[Any]:




											'''simple docstring'''

											try:
																	import diffusers  # noqa: F401
											except ImportError:
																	assert False






					def 				SCREAMING_SNAKE_CASE_	(    self						:		Optional[int]    )      ->						Any:




											'''simple docstring'''

											import diffusers
											from diffusers.dependency_versions_table import deps

											__snake_case				=		inspect.getmembers(SCREAMING_SNAKE_CASE  ,     inspect.isclass    )

											for cls_name, cls_module in all_classes:
																	if "dummy_" in cls_module.__module__:
																							for backend in cls_module._backends:
																													if backend == "k_diffusion":
																																			__snake_case				=		"k-diffusion"
																													elif backend == "invisible_watermark":
																																			__snake_case				=		"invisible-watermark"
																													assert backend in deps, f'''{backend} is not in the deps table!'''





