
'''simple docstring'''







# Note: if you intend to run this script make sure you look under scripts/fsmt/
# to locate the appropriate script to do the work correctly. There is a set of scripts to:
# - download and prepare data and run the conversion script
# - perform eval to get the best hparam into the config
# - generate model_cards - useful if you have multiple models from the same paper

import argparse
import json
import os
import re
from collections import OrderedDict
from os.path import basename, dirname

import fairseq
import torch
from fairseq import hub_utils
from fairseq.data.dictionary import Dictionary

from transformers import FSMTConfig, FSMTForConditionalGeneration
from transformers.models.fsmt.tokenization_fsmt import VOCAB_FILES_NAMES
from transformers.tokenization_utils_base import TOKENIZER_CONFIG_FILE
from transformers.utils import WEIGHTS_NAME, logging


logging.set_verbosity_warning()

lowercase					:							Tuple   =      2

# based on the results of a search on a range of `num_beams`, `length_penalty` and `early_stopping`
# values against wmt19 test data to obtain the best BLEU scores, we will use the following defaults:
#
# * `num_beams`: 5 (higher scores better, but requires more memory/is slower, can be adjusted by users)
# * `early_stopping`: `False` consistently scored better
# * `length_penalty` varied, so will assign the best one depending on the model
lowercase					:							Tuple   =      {
    # fairseq:
    "wmt19-ru-en": {"length_penalty": 1.1},
    "wmt19-en-ru": {"length_penalty": 1.15},
    "wmt19-en-de": {"length_penalty": 1.0},
    "wmt19-de-en": {"length_penalty": 1.1},
    # allenai:
    "wmt16-en-de-dist-12-1": {"length_penalty": 0.6},
    "wmt16-en-de-dist-6-1": {"length_penalty": 0.6},
    "wmt16-en-de-12-1": {"length_penalty": 0.8},
    "wmt19-de-en-6-6-base": {"length_penalty": 0.6},
    "wmt19-de-en-6-6-big": {"length_penalty": 0.6},
}

# this remaps the different models to their organization names
lowercase					:							int   =      {}
for m in ["wmt19-ru-en", "wmt19-en-ru", "wmt19-en-de", "wmt19-de-en"]:
					lowercase					:							Optional[int]   =      "facebook"
for m in [
    "wmt16-en-de-dist-12-1",
    "wmt16-en-de-dist-6-1",
    "wmt16-en-de-12-1",
    "wmt19-de-en-6-6-base",
    "wmt19-de-en-6-6-big",
]:
					lowercase					:							Optional[int]   =      "allenai"







def        SCREAMING_SNAKE_CASE__			(     __A			) ->			List[Any]:
	# (1) remove word breaking symbol, (2) add word ending symbol where the word is not broken up,
	# e.g.: d = {'le@@': 5, 'tt@@': 6, 'er': 7} => {'le': 5, 'tt': 6, 'er</w>': 7}
	_snake_case     		=	dict((re.sub(r'@@$'    ,       ''    ,       __A			), v) if k.endswith('@@'			) else (re.sub(r'$'    ,       '</w>'    ,       __A			), v) for k, v in d.items()			)
	_snake_case     		=	'<s> <pad> </s> <unk>'.split()
	# restore the special tokens
	for k in keep_keys:
		del da[F'{k}</w>']
		_snake_case     		=	d[k]  # restore
	return da







def        SCREAMING_SNAKE_CASE__			(     __A    ,       __A			) ->			int:
	# prep
	assert os.path.exists(__A			)
	os.makedirs(__A    ,       exist_ok=__A			)
	print(F'Writing results to {pytorch_dump_folder_path}'			)

	# handle various types of models

	_snake_case     		=	basename(__A			)
	_snake_case     		=	dirname(__A			)

	_snake_case     		=	fairseq.model_parallel.models.transformer.ModelParallelTransformerModel
	_snake_case     		=	cls.hub_models()
	_snake_case     		=	{'bpe': 'fastbpe', 'tokenizer': 'moses'}
	_snake_case     		=	'.'
	# note: since the model dump is old, fairseq has upgraded its model some
	# time later, and it does a whole lot of rewrites and splits on the saved
	# weights, therefore we can't use torch.load() directly on the model file.
	# see: upgrade_state_dict(state_dict) in fairseq_model.py
	print(F'using checkpoint {checkpoint_file}'			)
	_snake_case     		=	hub_utils.from_pretrained(
	    __A    ,       __A    ,       __A    ,       archive_map=__A    ,       **__A			)

	_snake_case     		=	vars(chkpt['args']['model']			)

	_snake_case     		=	args['source_lang']
	_snake_case     		=	args['target_lang']

	_snake_case     		=	dirname(__A			)
	_snake_case     		=	basename(__A			)

	# dicts
	_snake_case     		=	os.path.join(__A    ,       F'dict.{src_lang}.txt'			)
	_snake_case     		=	os.path.join(__A    ,       F'dict.{tgt_lang}.txt'			)

	_snake_case     		=	Dictionary.load(__A			)
	_snake_case     		=	rewrite_dict_keys(src_dict.indices			)
	_snake_case     		=	len(__A			)
	_snake_case     		=	os.path.join(__A    ,       'vocab-src.json'			)
	print(F'Generating {src_vocab_file} of {src_vocab_size} of {src_lang} records'			)
	with open(__A    ,       'w'    ,       encoding='utf-8'			) as f:
		f.write(json.dumps(__A    ,       ensure_ascii=__A    ,       indent=__A			)			)

	# detect whether this is a do_lower_case situation, which can be derived by checking whether we
	# have at least one uppercase letter in the source vocab
	_snake_case     		=	True
	for k in src_vocab.keys():
		if not k.islower():
			_snake_case     		=	False
			break

	_snake_case     		=	Dictionary.load(__A			)
	_snake_case     		=	rewrite_dict_keys(tgt_dict.indices			)
	_snake_case     		=	len(__A			)
	_snake_case     		=	os.path.join(__A    ,       'vocab-tgt.json'			)
	print(F'Generating {tgt_vocab_file} of {tgt_vocab_size} of {tgt_lang} records'			)
	with open(__A    ,       'w'    ,       encoding='utf-8'			) as f:
		f.write(json.dumps(__A    ,       ensure_ascii=__A    ,       indent=__A			)			)

	# merges_file (bpecodes)
	_snake_case     		=	os.path.join(__A    ,       VOCAB_FILES_NAMES['merges_file']			)
	for fn in ["bpecodes", "code"]:  # older fairseq called the merges file "code"
		_snake_case     		=	os.path.join(__A    ,       __A			)
		if os.path.exists(__A			):
			break
	with open(__A    ,       encoding='utf-8'			) as fin:
		_snake_case     		=	fin.read()
	_snake_case     		=	re.sub(r' \d+$'    ,       ''    ,       __A    ,       0    ,       re.M			)  # remove frequency number
	print(F'Generating {merges_file}'			)
	with open(__A    ,       'w'    ,       encoding='utf-8'			) as fout:
		fout.write(__A			)

	# model config
	_snake_case     		=	os.path.join(__A    ,       'config.json'			)

	# validate bpe/tokenizer config, as currently it's hardcoded to moses+fastbpe -
	# may have to modify the tokenizer if a different type is used by a future model
	assert args["bpe"] == "fastbpe", F'need to extend tokenizer to support bpe={args["bpe"]}'
	assert args["tokenizer"] == "moses", F'need to extend tokenizer to support bpe={args["tokenizer"]}'

	_snake_case     		=	{
	    'architectures': ['FSMTForConditionalGeneration'],
	    'model_type': 'fsmt',
	    'activation_dropout': args['activation_dropout'],
	    'activation_function': 'relu',
	    'attention_dropout': args['attention_dropout'],
	    'd_model': args['decoder_embed_dim'],
	    'dropout': args['dropout'],
	    'init_std': 0.0_2,
	    'max_position_embeddings': args['max_source_positions'],
	    'num_hidden_layers': args['encoder_layers'],
	    'src_vocab_size': src_vocab_size,
	    'tgt_vocab_size': tgt_vocab_size,
	    'langs': [src_lang, tgt_lang],
	    'encoder_attention_heads': args['encoder_attention_heads'],
	    'encoder_ffn_dim': args['encoder_ffn_embed_dim'],
	    'encoder_layerdrop': args['encoder_layerdrop'],
	    'encoder_layers': args['encoder_layers'],
	    'decoder_attention_heads': args['decoder_attention_heads'],
	    'decoder_ffn_dim': args['decoder_ffn_embed_dim'],
	    'decoder_layerdrop': args['decoder_layerdrop'],
	    'decoder_layers': args['decoder_layers'],
	    'bos_token_id': 0,
	    'pad_token_id': 1,
	    'eos_token_id': 2,
	    'is_encoder_decoder': True,
	    'scale_embedding': not args['no_scale_embedding'],
	    'tie_word_embeddings': args['share_all_embeddings'],
	}

	# good hparam defaults to start with
	_snake_case     		=	5
	_snake_case     		=	False
	if model_dir in best_score_hparams and "length_penalty" in best_score_hparams[model_dir]:
		_snake_case     		=	best_score_hparams[model_dir]['length_penalty']
	else:
		_snake_case     		=	1.0

	print(F'Generating {fsmt_model_config_file}'			)
	with open(__A    ,       'w'    ,       encoding='utf-8'			) as f:
		f.write(json.dumps(__A    ,       ensure_ascii=__A    ,       indent=__A			)			)

	# tokenizer config
	_snake_case     		=	os.path.join(__A    ,       __A			)

	_snake_case     		=	{
	    'langs': [src_lang, tgt_lang],
	    'model_max_length': 1_024,
	    'do_lower_case': do_lower_case,
	}

	print(F'Generating {fsmt_tokenizer_config_file}'			)
	with open(__A    ,       'w'    ,       encoding='utf-8'			) as f:
		f.write(json.dumps(__A    ,       ensure_ascii=__A    ,       indent=__A			)			)

	# model
	_snake_case     		=	chkpt['models'][0]
	_snake_case     		=	model.state_dict()

	# rename keys to start with 'model.'
	_snake_case     		=	OrderedDict(('model.' + k, v) for k, v in model_state_dict.items()			)

	# remove unneeded keys
	_snake_case     		=	[
	    'model.model',
	    'model.encoder.version',
	    'model.decoder.version',
	    'model.encoder_embed_tokens.weight',
	    'model.decoder_embed_tokens.weight',
	    'model.encoder.embed_positions._float_tensor',
	    'model.decoder.embed_positions._float_tensor',
	]
	for k in ignore_keys:
		model_state_dict.pop(__A    ,       __A			)

	_snake_case     		=	FSMTConfig.from_pretrained(__A			)
	_snake_case     		=	FSMTForConditionalGeneration(__A			)

	# check that it loads ok
	model_new.load_state_dict(__A    ,       strict=__A			)

	# save
	_snake_case     		=	os.path.join(__A    ,       __A			)
	print(F'Generating {pytorch_weights_dump_path}'			)
	torch.save(__A    ,       __A			)

	print('Conversion is done!'			)
	print('\nLast step is to upload the files to s3'			)
	print(F'cd {data_root}'			)
	print(F'transformers-cli upload {model_dir}'			)


if __name__ == "__main__":
					lowercase					:							Any   =      argparse.ArgumentParser()
					# Required parameters
					parser.add_argument(
					    "--fsmt_checkpoint_path",
					    default=None,
					    type=str,
					    required=True,
					    help=(
					        "Path to the official PyTorch checkpoint file which is expected to reside in the dump dir with dicts,"
					        " bpecodes, etc."
					    ),
					)
					parser.add_argument(
					    "--pytorch_dump_folder_path", default=None, type=str, required=True, help="Path to the output PyTorch model."
					)
					lowercase					:							List[Any]   =      parser.parse_args()
					convert_fsmt_checkpoint_to_pytorch(args.fsmt_checkpoint_path, args.pytorch_dump_folder_path)



'''simple docstring'''







import unittest

from transformers import is_torch_available
from transformers.testing_utils import require_torch, slow, torch_device

from ...generation.test_utils import GenerationTesterMixin
from ...test_configuration_common import ConfigTester
from ...test_modeling_common import ModelTesterMixin, ids_tensor
from ...test_pipeline_mixin import PipelineTesterMixin


if is_torch_available():
					import torch

					from transformers import (
					    OPENAI_GPT_PRETRAINED_MODEL_ARCHIVE_LIST,
					    OpenAIGPTConfig,
					    OpenAIGPTDoubleHeadsModel,
					    OpenAIGPTForSequenceClassification,
					    OpenAIGPTLMHeadModel,
					    OpenAIGPTModel,
					)


class 		__UpperCAmelCase   :


							def __init__( self					,     lowerCAmelCase_					,     lowerCAmelCase_=13					,     lowerCAmelCase_=7					,     lowerCAmelCase_=True					,     lowerCAmelCase_=True					,     lowerCAmelCase_=True					,     lowerCAmelCase_=99					,     lowerCAmelCase_=32					,     lowerCAmelCase_=5					,     lowerCAmelCase_=4					,     lowerCAmelCase_=37					,     lowerCAmelCase_="gelu"					,     lowerCAmelCase_=0.1					,     lowerCAmelCase_=0.1					,     lowerCAmelCase_=5_12					,     lowerCAmelCase_=16					,     lowerCAmelCase_=2					,     lowerCAmelCase_=0.02					,     lowerCAmelCase_=3					,     lowerCAmelCase_=4					,     lowerCAmelCase_=None					,     ):





								"""simple docstring"""






								_snake_case     		=	parent
								_snake_case     		=	batch_size
								_snake_case     		=	seq_length
								_snake_case     		=	is_training
								_snake_case     		=	use_token_type_ids
								_snake_case     		=	use_labels
								_snake_case     		=	vocab_size
								_snake_case     		=	hidden_size
								_snake_case     		=	num_hidden_layers
								_snake_case     		=	num_attention_heads
								_snake_case     		=	intermediate_size
								_snake_case     		=	hidden_act
								_snake_case     		=	hidden_dropout_prob
								_snake_case     		=	attention_probs_dropout_prob
								_snake_case     		=	max_position_embeddings
								_snake_case     		=	type_vocab_size
								_snake_case     		=	type_sequence_label_size
								_snake_case     		=	initializer_range
								_snake_case     		=	num_labels
								_snake_case     		=	num_choices
								_snake_case     		=	scope
								_snake_case     		=	self.vocab_size - 1


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	ids_tensor([self.batch_size, self.seq_length]					,     self.vocab_size						)

								_snake_case     		=	None
								if self.use_token_type_ids:
									_snake_case     		=	ids_tensor([self.batch_size, self.seq_length]					,     self.type_vocab_size						)

								_snake_case     		=	None
								_snake_case     		=	None
								_snake_case     		=	None
								if self.use_labels:
									_snake_case     		=	ids_tensor([self.batch_size]					,     self.type_sequence_label_size						)
									_snake_case     		=	ids_tensor([self.batch_size, self.seq_length]					,     self.num_labels						)
									_snake_case     		=	ids_tensor([self.batch_size]					,     self.num_choices						)

								_snake_case     		=	OpenAIGPTConfig(
								    vocab_size=self.vocab_size					,     n_embd=self.hidden_size					,     n_layer=self.num_hidden_layers					,     n_head=self.num_attention_heads					,     n_positions=self.max_position_embeddings					,     pad_token_id=self.pad_token_id					,     )

								_snake_case     		=	ids_tensor([self.num_hidden_layers, self.num_attention_heads]					,     2						)

								return (
								    config,
								    input_ids,
								    head_mask,
								    token_type_ids,
								    sequence_labels,
								    token_labels,
								    choice_labels,
								)


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     *lowerCAmelCase_						):





								"""simple docstring"""






								_snake_case     		=	OpenAIGPTModel(config=lowerCAmelCase_						)
								model.to(lowerCAmelCase_						)
								model.eval()

								_snake_case     		=	model(lowerCAmelCase_					,     token_type_ids=lowerCAmelCase_					,     head_mask=lowerCAmelCase_						)
								_snake_case     		=	model(lowerCAmelCase_					,     token_type_ids=lowerCAmelCase_						)
								_snake_case     		=	model(lowerCAmelCase_						)

								self.parent.assertEqual(result.last_hidden_state.shape					,     (self.batch_size, self.seq_length, self.hidden_size)						)


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     *lowerCAmelCase_						):





								"""simple docstring"""






								_snake_case     		=	OpenAIGPTLMHeadModel(lowerCAmelCase_						)
								model.to(lowerCAmelCase_						)
								model.eval()

								_snake_case     		=	model(lowerCAmelCase_					,     token_type_ids=lowerCAmelCase_					,     labels=lowerCAmelCase_						)
								self.parent.assertEqual(result.loss.shape					,     ()						)
								self.parent.assertEqual(result.logits.shape					,     (self.batch_size, self.seq_length, self.vocab_size)						)


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     *lowerCAmelCase_						):





								"""simple docstring"""






								_snake_case     		=	OpenAIGPTDoubleHeadsModel(lowerCAmelCase_						)
								model.to(lowerCAmelCase_						)
								model.eval()

								_snake_case     		=	model(lowerCAmelCase_					,     token_type_ids=lowerCAmelCase_					,     labels=lowerCAmelCase_						)
								self.parent.assertEqual(result.loss.shape					,     ()						)
								self.parent.assertEqual(result.logits.shape					,     (self.batch_size, self.seq_length, self.vocab_size)						)


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     *lowerCAmelCase_						):





								"""simple docstring"""






								_snake_case     		=	self.num_labels
								_snake_case     		=	OpenAIGPTForSequenceClassification(lowerCAmelCase_						)
								model.to(lowerCAmelCase_						)
								model.eval()

								_snake_case     		=	ids_tensor([self.batch_size]					,     self.type_sequence_label_size						)
								_snake_case     		=	model(lowerCAmelCase_					,     token_type_ids=lowerCAmelCase_					,     labels=lowerCAmelCase_						)
								self.parent.assertEqual(result.logits.shape					,     (self.batch_size, self.num_labels)						)




							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	self.prepare_config_and_inputs()
								(
								    (
								    _snake_case
								)		,				(
								    _snake_case
								)		,				(
								    _snake_case
								)		,				(
								    _snake_case
								)		,				(
								    _snake_case
								)		,				(
								    _snake_case
								)		,				(
								    _snake_case
								)		,				
								)     		=	config_and_inputs
								_snake_case     		=	{
								    'input_ids': input_ids,
								    'token_type_ids': token_type_ids,
								    'head_mask': head_mask,
								}

								return config, inputs_dict


@require_torch
class 		__UpperCAmelCase   (      _lowerCamelCase		,     _lowerCamelCase		,     _lowerCamelCase		,     unittest.TestCase		):
							__lowercase   	= (
							    (OpenAIGPTModel, OpenAIGPTLMHeadModel, OpenAIGPTDoubleHeadsModel, OpenAIGPTForSequenceClassification)
							    if is_torch_available()
							    else ()
							)
							__lowercase   	= (
							    (OpenAIGPTLMHeadModel,) if is_torch_available() else ()
							)  # TODO (PVP): Add Double HeadsModel when generate() function is changed accordingly
							__lowercase   	= (
							    {
							        """feature-extraction""": OpenAIGPTModel,
							        """text-classification""": OpenAIGPTForSequenceClassification,
							        """text-generation""": OpenAIGPTLMHeadModel,
							        """zero-shot""": OpenAIGPTForSequenceClassification,
							    }
							    if is_torch_available()
							    else {}
							)


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_						):





								"""simple docstring"""






								if pipeline_test_casse_name == "ZeroShotClassificationPipelineTests":
									# Get `tokenizer does not have a padding token` error for both fast/slow tokenizers.
									# `OpenAIGPTConfig` was never used in pipeline tests, either because of a missing checkpoint or because a
									# tiny config could not be created.
									return True

								return False


							def 				lowerCamelCase       ( self					,     lowerCAmelCase_					,     lowerCAmelCase_					,     lowerCAmelCase_=False						):





								"""simple docstring"""






								_snake_case     		=	super()._prepare_for_class(lowerCAmelCase_					,     lowerCAmelCase_					,     return_labels=lowerCAmelCase_						)

								if return_labels:
									if model_class.__name__ == "OpenAIGPTDoubleHeadsModel":
										_snake_case     		=	torch.zeros(
										    (self.model_tester.batch_size, self.model_tester.num_choices, self.model_tester.seq_length)					,     dtype=torch.long					,     device=lowerCAmelCase_					,     )
										_snake_case     		=	inputs_dict['labels']
										_snake_case     		=	inputs_dict['labels']
										_snake_case     		=	torch.zeros(
										    (self.model_tester.batch_size, self.model_tester.num_choices)					,     dtype=torch.long					,     device=lowerCAmelCase_					,     )
										_snake_case     		=	torch.zeros(
										    self.model_tester.batch_size					,     dtype=torch.long					,     device=lowerCAmelCase_						)
								return inputs_dict


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	OpenAIGPTModelTester(self						)
								_snake_case     		=	ConfigTester(self					,     config_class=lowerCAmelCase_					,     n_embd=37						)


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								self.config_tester.run_common_tests()


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	self.model_tester.prepare_config_and_inputs()
								self.model_tester.create_and_check_openai_gpt_model(*lowerCAmelCase_						)


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	self.model_tester.prepare_config_and_inputs()
								self.model_tester.create_and_check_lm_head_model(*lowerCAmelCase_						)


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	self.model_tester.prepare_config_and_inputs()
								self.model_tester.create_and_check_double_lm_head_model(*lowerCAmelCase_						)


							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	self.model_tester.prepare_config_and_inputs()
								self.model_tester.create_and_check_openai_gpt_for_sequence_classification(*lowerCAmelCase_						)




							@slow
							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								for model_name in OPENAI_GPT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
									_snake_case     		=	OpenAIGPTModel.from_pretrained(lowerCAmelCase_						)
									self.assertIsNotNone(lowerCAmelCase_						)


@require_torch
class 		__UpperCAmelCase   (      unittest.TestCase		):


							@slow
							def 				lowerCamelCase       ( self						):





								"""simple docstring"""






								_snake_case     		=	OpenAIGPTLMHeadModel.from_pretrained('openai-gpt'						)
								model.to(lowerCAmelCase_						)
								_snake_case     		=	torch.tensor([[4_81, 47_35, 5_44]]					,     dtype=torch.long					,     device=lowerCAmelCase_						)  # the president is
								_snake_case     		=	[
								    4_81,
								    47_35,
								    5_44,
								    2_46,
								    9_63,
								    8_70,
								    7_62,
								    2_39,
								    2_44,
								    4_04_77,
								    2_44,
								    2_49,
								    7_19,
								    8_81,
								    4_87,
								    5_44,
								    2_40,
								    2_44,
								    6_03,
								    4_81,
								]  # the president is a very good man. " \n " i\'m sure he is, " said the

								_snake_case     		=	model.generate(lowerCAmelCase_					,     do_sample=lowerCAmelCase_						)
								self.assertListEqual(output_ids[0].tolist()					,     lowerCAmelCase_						)

