



"""simple docstring"""






# This script creates a super tiny model that is useful inside tests, when we just want to test that
# the machinery works, without needing to the check the quality of the outcomes.
#
# This version creates a tiny vocab first, and then a tiny model - so the outcome is truly tiny -
# all files ~60KB. As compared to taking a full-size model, reducing to the minimum its layers and
# emb dimensions, but keeping the full vocab + merges files, leading to ~3MB in total for all files.
# The latter is done by `fsmt-make-super-tiny-model.py`.
#
# It will be used then as "stas/tiny-wmt19-en-ru"

from pathlib import Path
import json
import tempfile

from transformers import FSMTTokenizer, FSMTConfig, FSMTForConditionalGeneration
from transformers.models.fsmt.tokenization_fsmt import VOCAB_FILES_NAMES

snake_case   					=				'''tiny-wmt19-en-ru'''

# Build

# borrowed from a test
snake_case   					=				[
    '''l''',
    '''o''',
    '''w''',
    '''e''',
    '''r''',
    '''s''',
    '''t''',
    '''i''',
    '''d''',
    '''n''',
    '''w</w>''',
    '''r</w>''',
    '''t</w>''',
    '''lo''',
    '''low''',
    '''er</w>''',
    '''low</w>''',
    '''lowest</w>''',
    '''newer</w>''',
    '''wider</w>''',
    '''<unk>''',
]
snake_case   					=				dict(zip(vocab, range(len(vocab))))
snake_case   					=				['''l o 123''', '''lo w 1456''', '''e r</w> 1789''', '''''']

with tempfile.TemporaryDirectory() as tmpdirname:
     snake_case   					=				Path(tmpdirname)
     snake_case   					=				build_dir / VOCAB_FILES_NAMES['''src_vocab_file''']
     snake_case   					=				build_dir / VOCAB_FILES_NAMES['''tgt_vocab_file''']
     snake_case   					=				build_dir / VOCAB_FILES_NAMES['''merges_file''']
     with open(src_vocab_file, '''w''') as fp:
          fp.write(json.dumps(vocab_tokens))
     with open(tgt_vocab_file, '''w''') as fp:
          fp.write(json.dumps(vocab_tokens))
     with open(merges_file, '''w''') as fp:
          fp.write('''\n'''.join(merges))

     snake_case   					=				FSMTTokenizer(
         langs=['''en''', '''ru'''],
         src_vocab_size=len(vocab),
         tgt_vocab_size=len(vocab),
         src_vocab_file=src_vocab_file,
         tgt_vocab_file=tgt_vocab_file,
         merges_file=merges_file,
     )

snake_case   					=				FSMTConfig(
    langs=['''ru''', '''en'''],
    src_vocab_size=1_0_0_0,
    tgt_vocab_size=1_0_0_0,
    d_model=4,
    encoder_layers=1,
    decoder_layers=1,
    encoder_ffn_dim=4,
    decoder_ffn_dim=4,
    encoder_attention_heads=1,
    decoder_attention_heads=1,
)

snake_case   					=				FSMTForConditionalGeneration(config)
print(F"num of params {tiny_model.num_parameters()}")

# Test
snake_case   					=				tokenizer(['''Making tiny model'''], return_tensors='''pt''')
snake_case   					=				tiny_model(**batch)

print('''test output:''', len(outputs.logits[0]))

# Save
tiny_model.half()  # makes it smaller
tiny_model.save_pretrained(mname_tiny)
tokenizer.save_pretrained(mname_tiny)

print(F"Generated {mname_tiny}")

# Upload
# transformers-cli upload tiny-wmt19-en-ru









import argparse
import logging
import os

import datasets
import tensorflow as tf

from transformers import AutoTokenizer


snake_case__				:	Dict					       =					logging.getLogger(__name__)


def    __lowerCamelCase   (      )     ->    Any:
   lowerCamelCase_						:   str		= argparse.ArgumentParser(
       description="""Prepare TFRecord shards from pre-tokenized samples of the wikitext dataset."""					)
   parser.add_argument(
       """--dataset_name"""						,						type=A__						,						default="""wikitext"""						,						help="""Name of the training. Explore datasets at: hf.co/datasets."""						,						)
   parser.add_argument(
       """--dataset_config"""						,						type=A__						,						default="""wikitext-103-raw-v1"""						,						help="""Configuration name of the dataset."""					)
   parser.add_argument(
       """--tokenizer_name_or_path"""						,						type=A__						,						default="""sayakpaul/unigram-tokenizer-wikitext"""						,						help="""Tokenizer identifier. Can be a local filepath or a Hub identifier."""						,						)
   parser.add_argument(
       """--shard_size"""						,						type=A__						,						default=1000						,						help="""Number of entries to go in a single shard."""						,						)
   parser.add_argument("""--split"""						,						type=A__						,						default="""train"""						,						choices=["""train""", """test""", """validation"""]					)
   parser.add_argument(
       """--limit"""						,						default=A__						,						type=A__						,						help="""Limit the number of shards (used for debugging)."""						,						)
   parser.add_argument(
       """--max_length"""						,						type=A__						,						default=512						,						help="""Maximum sequence length. For training on TPUs, it helps to have a maximum"""
       """ sequence length that is a multiple of 8."""						,						)
   parser.add_argument(
       """--output_dir"""						,						default="""tf-tpu"""						,						type=A__						,						help="""Output directory where the TFRecord shards will be saved. If the"""
       """ path is appended with `gs://` ('gs://tf-tpu', for example) then the TFRecord"""
       """ shards will be directly saved to a Google Cloud Storage bucket."""						,						)

   lowerCamelCase_						:   Optional[int]		= parser.parse_args()
   return args


def    __lowerCamelCase   (      A__						: Tuple					)     ->    str:
   def fn(A__						: Dict					):
      return tokenizer(examples["""text"""]					)

   return fn


def    __lowerCamelCase   (      A__						: Union[str, Any]					)     ->    Union[str, Any]:
   lowerCamelCase_						:   Dict		= []
   for i in range(len(tokenized_data["""input_ids"""]					)					):
      lowerCamelCase_						:   List[str]		= {
          """input_ids""": tf.train.Feature(intaa_list=tf.train.IntaaList(value=tokenized_data["""input_ids"""][i]					)					),
          """attention_mask""": tf.train.Feature(
              intaa_list=tf.train.IntaaList(value=tokenized_data["""attention_mask"""][i]					)					),
      }
      lowerCamelCase_						:   Optional[int]		= tf.train.Features(feature=A__					)
      lowerCamelCase_						:   Tuple		= tf.train.Example(features=A__					)
      lowerCamelCase_						:   Optional[Any]		= example.SerializeToString()
      records.append(A__					)
   return records


def    __lowerCamelCase   (      A__						: Tuple					)     ->    Union[str, Any]:
   lowerCamelCase_						:   int		= datasets.load_dataset(args.dataset_name						,						args.dataset_config						,						split=args.split					)

   if args.limit is not None:
      lowerCamelCase_						:   str		= min(len(A__					)						,						args.limit					)
      lowerCamelCase_						:   Dict		= dataset.select(range(A__					)					)
      print(f'''Limiting the dataset to {args.limit} entries.'''					)

   lowerCamelCase_						:   str		= AutoTokenizer.from_pretrained(args.tokenizer_name_or_path					)

   # Handle output directory creation.
   # For serializing into a Google Cloud Storage Bucket, one needs to first
   # create a bucket.
   if "gs" not in args.output_dir:
      if not os.path.exists(args.output_dir					):
         os.makedirs(args.output_dir					)
      lowerCamelCase_						:   Optional[int]		= os.path.join(args.output_dir						,						args.split					)
      if not os.path.exists(A__					):
         os.makedirs(A__					)
   else:
      lowerCamelCase_						:   Any		= os.path.join(args.output_dir						,						args.split					)

   # Tokenize the whole dataset at once.
   lowerCamelCase_						:   List[str]		= tokenize_function(A__					)
   lowerCamelCase_						:   List[Any]		= dataset.map(A__						,						batched=A__						,						num_proc=4						,						remove_columns=["""text"""]					)

   # We need to concatenate all our texts together, and then split the result
   # into chunks of a fixed size, which we will call block_size. To do this, we
   # will use the map method again, with the option batched=True. When we use batched=True,
   # the function we pass to map() will be passed multiple inputs at once, allowing us
   # to group them into more or fewer examples than we had in the input.
   # This allows us to create our new fixed-length samples. The advantage of this
   # method is that we don't lose a whole lot of content from the dataset compared to the
   # case where we simply tokenize with a pre-defined max_length.

   def group_texts(A__						: Union[str, Any]					):
      # Concatenate all texts.
      lowerCamelCase_						:   Optional[int]		= {k: sum(examples[k]						,						[]					) for k in examples.keys()}
      lowerCamelCase_						:   Union[str, Any]		= len(concatenated_examples[list(examples.keys()					)[0]]					)
      # We drop the small remainder, though you could add padding instead if the model supports it
      # In this, as in all things, we advise you to follow your heart 🫀
      lowerCamelCase_						:   Union[str, Any]		= (total_length // args.max_length) * args.max_length
      # Split by chunks of max_len.
      lowerCamelCase_						:   List[str]		= {
          k: [t[i : i + args.max_length] for i in range(0						,						A__						,						args.max_length					)]
          for k, t in concatenated_examples.items()
      }
      return result

   lowerCamelCase_						:   Optional[int]		= dataset_tokenized.map(A__						,						batched=A__						,						batch_size=1000						,						num_proc=4					)

   lowerCamelCase_						:   List[str]		= 0
   lowerCamelCase_						:   Tuple		= 0
   for shard in range(0						,						len(A__					)						,						args.shard_size					):
      lowerCamelCase_						:   Union[str, Any]		= grouped_dataset[shard : shard + args.shard_size]
      lowerCamelCase_						:   Optional[int]		= len(dataset_snapshot["""input_ids"""]					)
      lowerCamelCase_						:   List[str]		= os.path.join(A__						,						f'''dataset-{shard_count}-{records_containing}.tfrecord'''					)
      lowerCamelCase_						:   Optional[int]		= get_serialized_examples(A__					)

      with tf.io.TFRecordWriter(A__					) as out_file:
         for i in range(len(A__					)					):
            lowerCamelCase_						:   Dict		= serialized_examples[i]
            out_file.write(A__					)
         print("""Wrote file {} containing {} records""".format(A__						,						A__					)					)

      shard_count += 1
      total_records += records_containing

   with open(f'''split-{args.split}-records-count.txt'''						,						"""w"""					) as f:
      print(f'''Total {args.split} records: {total_records}'''						,						file=A__					)


if __name__ == "__main__":
      snake_case__				:	str					       =					parse_args()
      main(args)





