


"""simple docstring"""


import collections
from typing import List, Optional, Union

from ...tokenization_utils_base import BatchEncoding
from ...utils import TensorType, add_end_docstrings, add_start_docstrings, logging
from ..bert.tokenization_bert import BertTokenizer


a_       							=    logging.get_logger(__name__)

a_       							=    {"vocab_file": "vocab.txt", "tokenizer_file": "tokenizer.json"}

a_       							=    {
    "vocab_file": {
        "facebook/dpr-ctx_encoder-single-nq-base": (
            "https://huggingface.co/facebook/dpr-ctx_encoder-single-nq-base/resolve/main/vocab.txt"
        ),
        "facebook/dpr-ctx_encoder-multiset-base": (
            "https://huggingface.co/facebook/dpr-ctx_encoder-multiset-base/resolve/main/vocab.txt"
        ),
    },
    "tokenizer_file": {
        "facebook/dpr-ctx_encoder-single-nq-base": (
            "https://huggingface.co/facebook/dpr-ctx_encoder-single-nq-base/resolve/main/tokenizer.json"
        ),
        "facebook/dpr-ctx_encoder-multiset-base": (
            "https://huggingface.co/facebook/dpr-ctx_encoder-multiset-base/resolve/main/tokenizer.json"
        ),
    },
}
a_       							=    {
    "vocab_file": {
        "facebook/dpr-question_encoder-single-nq-base": (
            "https://huggingface.co/facebook/dpr-question_encoder-single-nq-base/resolve/main/vocab.txt"
        ),
        "facebook/dpr-question_encoder-multiset-base": (
            "https://huggingface.co/facebook/dpr-question_encoder-multiset-base/resolve/main/vocab.txt"
        ),
    },
    "tokenizer_file": {
        "facebook/dpr-question_encoder-single-nq-base": (
            "https://huggingface.co/facebook/dpr-question_encoder-single-nq-base/resolve/main/tokenizer.json"
        ),
        "facebook/dpr-question_encoder-multiset-base": (
            "https://huggingface.co/facebook/dpr-question_encoder-multiset-base/resolve/main/tokenizer.json"
        ),
    },
}
a_       							=    {
    "vocab_file": {
        "facebook/dpr-reader-single-nq-base": (
            "https://huggingface.co/facebook/dpr-reader-single-nq-base/resolve/main/vocab.txt"
        ),
        "facebook/dpr-reader-multiset-base": (
            "https://huggingface.co/facebook/dpr-reader-multiset-base/resolve/main/vocab.txt"
        ),
    },
    "tokenizer_file": {
        "facebook/dpr-reader-single-nq-base": (
            "https://huggingface.co/facebook/dpr-reader-single-nq-base/resolve/main/tokenizer.json"
        ),
        "facebook/dpr-reader-multiset-base": (
            "https://huggingface.co/facebook/dpr-reader-multiset-base/resolve/main/tokenizer.json"
        ),
    },
}

a_       							=    {
    "facebook/dpr-ctx_encoder-single-nq-base": 5_12,
    "facebook/dpr-ctx_encoder-multiset-base": 5_12,
}
a_       							=    {
    "facebook/dpr-question_encoder-single-nq-base": 5_12,
    "facebook/dpr-question_encoder-multiset-base": 5_12,
}
a_       							=    {
    "facebook/dpr-reader-single-nq-base": 5_12,
    "facebook/dpr-reader-multiset-base": 5_12,
}


a_       							=    {
    "facebook/dpr-ctx_encoder-single-nq-base": {"do_lower_case": True},
    "facebook/dpr-ctx_encoder-multiset-base": {"do_lower_case": True},
}
a_       							=    {
    "facebook/dpr-question_encoder-single-nq-base": {"do_lower_case": True},
    "facebook/dpr-question_encoder-multiset-base": {"do_lower_case": True},
}
a_       							=    {
    "facebook/dpr-reader-single-nq-base": {"do_lower_case": True},
    "facebook/dpr-reader-multiset-base": {"do_lower_case": True},
}
class snake_case      (  _UpperCamelCase):
		__UpperCamelCase           =			VOCAB_FILES_NAMES
		__UpperCamelCase           =			CONTEXT_ENCODER_PRETRAINED_VOCAB_FILES_MAP
		__UpperCamelCase           =			CONTEXT_ENCODER_PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
		__UpperCamelCase           =			CONTEXT_ENCODER_PRETRAINED_INIT_CONFIGURATION





class snake_case      (  _UpperCamelCase):
		__UpperCamelCase           =			VOCAB_FILES_NAMES
		__UpperCamelCase           =			QUESTION_ENCODER_PRETRAINED_VOCAB_FILES_MAP
		__UpperCamelCase           =			QUESTION_ENCODER_PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
		__UpperCamelCase           =			QUESTION_ENCODER_PRETRAINED_INIT_CONFIGURATION





a_       							=    collections.namedtuple(
    "DPRSpanPrediction", ["span_score", "relevance_score", "doc_id", "start_index", "end_index", "text"]
)

a_       							=    collections.namedtuple("DPRReaderOutput", ["start_logits", "end_logits", "relevance_logits"])


a_       							=    r"\n    Return a dictionary with the token ids of the input strings and other information to give to `.decode_best_spans`.\n    It converts the strings of a question and different passages (title and text) in a sequence of IDs (integers),\n    using the tokenizer and vocabulary. The resulting `input_ids` is a matrix of size `(n_passages, sequence_length)`\n    with the format:\n\n    ```\n    [CLS] <question token ids> [SEP] <titles ids> [SEP] <texts ids>\n    ```\n\n    Args:\n        questions (`str` or `List[str]`):\n            The questions to be encoded. You can specify one question for many passages. In this case, the question\n            will be duplicated like `[questions] * n_passages`. Otherwise you have to specify as many questions as in\n            `titles` or `texts`.\n        titles (`str` or `List[str]`):\n            The passages titles to be encoded. This can be a string or a list of strings if there are several passages.\n        texts (`str` or `List[str]`):\n            The passages texts to be encoded. This can be a string or a list of strings if there are several passages.\n        padding (`bool`, `str` or [`~utils.PaddingStrategy`], *optional*, defaults to `False`):\n            Activates and controls padding. Accepts the following values:\n\n            - `True` or `'longest'`: Pad to the longest sequence in the batch (or no padding if only a single sequence\n              if provided).\n            - `'max_length'`: Pad to a maximum length specified with the argument `max_length` or to the maximum\n              acceptable input length for the model if that argument is not provided.\n            - `False` or `'do_not_pad'` (default): No padding (i.e., can output a batch with sequences of different\n              lengths).\n        truncation (`bool`, `str` or [`~tokenization_utils_base.TruncationStrategy`], *optional*, defaults to `False`):\n            Activates and controls truncation. Accepts the following values:\n\n            - `True` or `'longest_first'`: Truncate to a maximum length specified with the argument `max_length` or to\n              the maximum acceptable input length for the model if that argument is not provided. This will truncate\n              token by token, removing a token from the longest sequence in the pair if a pair of sequences (or a batch\n              of pairs) is provided.\n            - `'only_first'`: Truncate to a maximum length specified with the argument `max_length` or to the maximum\n              acceptable input length for the model if that argument is not provided. This will only truncate the first\n              sequence of a pair if a pair of sequences (or a batch of pairs) is provided.\n            - `'only_second'`: Truncate to a maximum length specified with the argument `max_length` or to the maximum\n              acceptable input length for the model if that argument is not provided. This will only truncate the\n              second sequence of a pair if a pair of sequences (or a batch of pairs) is provided.\n            - `False` or `'do_not_truncate'` (default): No truncation (i.e., can output batch with sequence lengths\n              greater than the model maximum admissible input size).\n        max_length (`int`, *optional*):\n                Controls the maximum length to use by one of the truncation/padding parameters.\n\n                If left unset or set to `None`, this will use the predefined model maximum length if a maximum length\n                is required by one of the truncation/padding parameters. If the model has no specific maximum input\n                length (like XLNet) truncation/padding to a maximum length will be deactivated.\n        return_tensors (`str` or [`~utils.TensorType`], *optional*):\n                If set, will return tensors instead of list of python integers. Acceptable values are:\n\n                - `'tf'`: Return TensorFlow `tf.constant` objects.\n                - `'pt'`: Return PyTorch `torch.Tensor` objects.\n                - `'np'`: Return Numpy `np.ndarray` objects.\n        return_attention_mask (`bool`, *optional*):\n            Whether or not to return the attention mask. If not set, will return the attention mask according to the\n            specific tokenizer's default, defined by the `return_outputs` attribute.\n\n            [What are attention masks?](../glossary#attention-mask)\n\n    Returns:\n        `Dict[str, List[List[int]]]`: A dictionary with the following keys:\n\n        - `input_ids`: List of token ids to be fed to a model.\n        - `attention_mask`: List of indices specifying which tokens should be attended to by the model.\n    "
@add_start_docstrings(_UpperCamelCase)
class snake_case      :







		def __call__(					self      :       Optional[int]    ,   a__      :       Dict    ,   a__      :       Optional[str] = None    ,   a__      :       Optional[str] = None    ,   a__      :       Union[bool, str] = False    ,   a__      :       Union[bool, str] = False    ,   a__      :       Optional[int] = None    ,   a__      :       Optional[Union[str, TensorType]] = None    ,   a__      :       Optional[bool] = None    ,   **a__      :       int    ,   )       ->						BatchEncoding:





						'''simple docstring'''







						if titles is None and texts is None:
										return super().__call__(
										    a__    ,   padding=a__    ,   truncation=a__    ,   max_length=a__    ,   return_tensors=a__    ,   return_attention_mask=a__    ,   **a__    ,   )
						elif titles is None or texts is None:
										_A					  =			titles if texts is None else texts
										return super().__call__(
										    a__    ,   a__    ,   padding=a__    ,   truncation=a__    ,   max_length=a__    ,   return_tensors=a__    ,   return_attention_mask=a__    ,   **a__    ,   )
						_A					  =			titles if not isinstance(a__    ,   a__		) else [titles]
						_A					  =			texts if not isinstance(a__    ,   a__		) else [texts]
						_A					  =			len(a__		)
						_A					  =			questions if not isinstance(a__    ,   a__		) else [questions] * n_passages
						if len(a__		) != len(a__		):
										raise ValueError(
										    F"""There should be as many titles than texts but got {len(a__		)} titles and {len(a__		)} texts."""		)
						_A					  =			super().__call__(a__    ,   a__    ,   padding=a__    ,   truncation=a__		)["input_ids"]
						_A					  =			super().__call__(a__    ,   add_special_tokens=a__    ,   padding=a__    ,   truncation=a__		)["input_ids"]
						_A					  =			{
						    "input_ids": [
						        (encoded_question_and_title + encoded_text)[:max_length]
						        if max_length is not None and truncation
						        else encoded_question_and_title + encoded_text
						        for encoded_question_and_title, encoded_text in zip(a__    ,   a__		)
						    ]
						}
						if return_attention_mask is not False:
										_A					  =			[]
										for input_ids in encoded_inputs["input_ids"]:
														attention_mask.append([int(input_id != self.pad_token_id		) for input_id in input_ids]		)
										_A					  =			attention_mask
						return self.pad(a__    ,   padding=a__    ,   max_length=a__    ,   return_tensors=a__		)







		def  a_ (					self      :       Optional[Any]    ,   a__      :       BatchEncoding    ,   a__      :       DPRReaderOutput    ,   a__      :       int = 16    ,   a__      :       int = 64    ,   a__      :       int = 4    ,   )       ->						List[DPRSpanPrediction]:





						'''simple docstring'''







						_A					  =			reader_input["input_ids"]
						_A  ,		_A  ,		_A					  =			reader_output[:3]
						_A					  =			len(a__		)
						_A					  =			sorted(range(a__		)    ,   reverse=a__    ,   key=relevance_logits.__getitem__		)
						_A					  =			[]
						for doc_id in sorted_docs:
										_A					  =			list(input_ids[doc_id]		)
										# assuming question & title information is at the beginning of the sequence
										_A					  =			sequence_ids.index(self.sep_token_id    ,   2		) + 1  # second sep id
										if sequence_ids[-1] == self.pad_token_id:
														_A					  =			sequence_ids.index(self.pad_token_id		)
										else:
														_A					  =			len(a__		)

										_A					  =			self._get_best_spans(
										    start_logits=start_logits[doc_id][passage_offset:sequence_len]    ,   end_logits=end_logits[doc_id][passage_offset:sequence_len]    ,   max_answer_length=a__    ,   top_spans=a__    ,   )
										for start_index, end_index in best_spans:
														start_index += passage_offset
														end_index += passage_offset
														nbest_spans_predictions.append(
														    DPRSpanPrediction(
														        span_score=start_logits[doc_id][start_index] + end_logits[doc_id][end_index]    ,   relevance_score=relevance_logits[doc_id]    ,   doc_id=a__    ,   start_index=a__    ,   end_index=a__    ,   text=self.decode(sequence_ids[start_index : end_index + 1]		)    ,   )		)
										if len(a__		) >= num_spans:
														break
						return nbest_spans_predictions[:num_spans]







		def  a_ (					self      :       str    ,   a__      :       List[int]    ,   a__      :       List[int]    ,   a__      :       int    ,   a__      :       int    ,   )       ->						List[DPRSpanPrediction]:





						'''simple docstring'''







						_A					  =			[]
						for start_index, start_score in enumerate(a__		):
										for answer_length, end_score in enumerate(end_logits[start_index : start_index + max_answer_length]		):
														scores.append(((start_index, start_index + answer_length), start_score + end_score)		)
						_A					  =			sorted(a__    ,   key=lambda a__		: x[1]    ,   reverse=a__		)
						_A					  =			[]
						for (start_index, end_index), score in scores:
										if start_index > end_index:
														raise ValueError(F"""Wrong span indices: [{start_index}:{end_index}]"""		)
										_A					  =			end_index - start_index + 1
										if length > max_answer_length:
														raise ValueError(F"""Span is too long: {length} > {max_answer_length}"""		)
										if any(
										    start_index <= prev_start_index <= prev_end_index <= end_index
										    or prev_start_index <= start_index <= end_index <= prev_end_index
										    for (prev_start_index, prev_end_index) in chosen_span_intervals		):
														continue
										chosen_span_intervals.append((start_index, end_index)		)

										if len(a__		) == top_spans:
														break
						return chosen_span_intervals





@add_end_docstrings(_UpperCamelCase)
class snake_case      (  _UpperCamelCase     ,				_UpperCamelCase):
		__UpperCamelCase           =			VOCAB_FILES_NAMES
		__UpperCamelCase           =			READER_PRETRAINED_VOCAB_FILES_MAP
		__UpperCamelCase           =			READER_PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
		__UpperCamelCase           =			READER_PRETRAINED_INIT_CONFIGURATION
		__UpperCamelCase           =			['input_ids', 'attention_mask']



"""simple docstring"""


import random
import unittest

from torch.utils.data import BatchSampler, DataLoader, IterableDataset

from accelerate import Accelerator
from accelerate.data_loader import (
    BatchSamplerShard,
    DataLoaderDispatcher,
    DataLoaderShard,
    IterableDatasetShard,
    SkipBatchSampler,
    SkipDataLoader,
    skip_first_batches,
)
class snake_case      (  _UpperCamelCase):







		def __init__(					self      :       Optional[int]    ,   a__      :       str=0.0_1    ,   a__      :       str=10_00		)       ->						int:





						'''simple docstring'''







						_A					  =			p_stop
						_A					  =			max_length







		def __iter__(					self      :       Any		)       ->						Optional[Any]:





						'''simple docstring'''







						_A					  =			0
						_A					  =			False
						while not stop and count < self.max_length:
										yield count
										count += 1
										_A					  =			random.random() < self.p_stop





class snake_case      (  unittest.TestCase):







		def  a_ (					self      :       List[Any]    ,   a__      :       Union[str, Any]    ,   a__      :       Union[str, Any]    ,   a__      :       List[str]=False    ,   a__      :       str=True		)       ->						Union[str, Any]:





						'''simple docstring'''







						_A					  =			[
						    BatchSamplerShard(a__    ,   2    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)
						    for i in range(2		)
						]
						_A					  =			[list(a__		) for batch_sampler_shard in batch_sampler_shards]
						if not split_batches:
										self.assertListEqual([len(a__		) for shard in batch_sampler_shards]    ,   [len(a__		) for e in expected]		)
						self.assertListEqual(a__    ,   a__		)







		def  a_ (					self      :       List[Any]		)       ->						str:





						'''simple docstring'''







						_A					  =			BatchSampler(range(24		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [21, 22, 23]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						_A					  =			BatchSampler(range(24		)    ,   batch_size=3    ,   drop_last=a__		)
						# Expected shouldn't change
						self.check_batch_sampler_shards(a__    ,   a__		)

						# Check the shards when the dataset is a round multiple of batch size but not total batch size.
						_A					  =			BatchSampler(range(21		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [0, 1, 2]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						_A					  =			BatchSampler(range(21		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						# Check the shards when the dataset is not a round multiple of batch size but has a multiple of
						# num_processes batch.
						_A					  =			BatchSampler(range(22		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [21, 0, 1]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						_A					  =			BatchSampler(range(22		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						# Check the shards when the dataset is not a round multiple of batch size but and has not a multiple of
						# num_processes batch.
						_A					  =			BatchSampler(range(20		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 0]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [1, 2, 3]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						_A					  =			BatchSampler(range(20		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__		)

						# Check the shards when the dataset is very small.
						_A					  =			BatchSampler(range(2		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[[[0, 1, 0]], [[1, 0, 1]]]
						self.check_batch_sampler_shards(a__    ,   a__		)

						_A					  =			BatchSampler(range(2		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[[], []]
						self.check_batch_sampler_shards(a__    ,   a__		)







		def  a_ (					self      :       int		)       ->						int:





						'''simple docstring'''







						_A					  =			BatchSampler(range(24		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20, 21]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19], [22, 23]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						_A					  =			BatchSampler(range(24		)    ,   batch_size=4    ,   drop_last=a__		)
						# Expected shouldn't change
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size.
						_A					  =			BatchSampler(range(22		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20, 21]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19], [0, 1]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						_A					  =			BatchSampler(range(22		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size or num_processes.
						_A					  =			BatchSampler(range(21		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20, 0]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19], [1, 2]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						_A					  =			BatchSampler(range(21		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						# Check the shards when the dataset is very small.
						_A					  =			BatchSampler(range(2		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[[[0, 1]], [[0, 1]]]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)

						_A					  =			BatchSampler(range(2		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[[], []]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__		)







		def  a_ (					self      :       List[str]		)       ->						List[str]:





						'''simple docstring'''







						_A					  =			BatchSampler(range(24		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [21, 22, 23]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(24		)    ,   batch_size=3    ,   drop_last=a__		)
						# Expected shouldn't change
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						# Check the shards when the dataset is a round multiple of batch size but not total batch size.
						_A					  =			BatchSampler(range(21		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(21		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size but has a multiple of
						# num_processes batch.
						_A					  =			BatchSampler(range(22		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19, 20]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17], [21]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(22		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size but and has not a multiple of
						# num_processes batch.
						_A					  =			BatchSampler(range(20		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14], [18, 19]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(20		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1, 2], [6, 7, 8], [12, 13, 14]],
						    [[3, 4, 5], [9, 10, 11], [15, 16, 17]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						# Check the shards when the dataset is very small.
						_A					  =			BatchSampler(range(2		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[[[0, 1]], []]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(2		)    ,   batch_size=3    ,   drop_last=a__		)
						_A					  =			[[], []]
						self.check_batch_sampler_shards(a__    ,   a__    ,   even_batches=a__		)







		def  a_ (					self      :       List[str]		)       ->						str:





						'''simple docstring'''







						_A					  =			BatchSampler(range(24		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20, 21]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19], [22, 23]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(24		)    ,   batch_size=4    ,   drop_last=a__		)
						# Expected shouldn't change
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size.
						_A					  =			BatchSampler(range(22		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20, 21]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(22		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						# Check the shards when the dataset is not a round multiple of batch size or num_processes.
						_A					  =			BatchSampler(range(21		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17], [20]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(21		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[
						    [[0, 1], [4, 5], [8, 9], [12, 13], [16, 17]],
						    [[2, 3], [6, 7], [10, 11], [14, 15], [18, 19]],
						]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						# Check the shards when the dataset is very small.
						_A					  =			BatchSampler(range(2		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[[[0, 1]], []]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)

						_A					  =			BatchSampler(range(2		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			[[], []]
						self.check_batch_sampler_shards(a__    ,   a__    ,   split_batches=a__    ,   even_batches=a__		)







		def  a_ (					self      :       Union[str, Any]		)       ->						str:





						'''simple docstring'''







						_A					  =			[[0, 1, 2], [3, 4], [5, 6, 7, 8], [9, 10, 11], [12, 13]]
						_A					  =			[BatchSamplerShard(a__    ,   2    ,   a__    ,   even_batches=a__		) for i in range(2		)]

						self.assertEqual(len(batch_sampler_shards[0]		)    ,   3		)
						self.assertEqual(len(batch_sampler_shards[1]		)    ,   2		)

						self.assertListEqual(list(batch_sampler_shards[0]		)    ,   [[0, 1, 2], [5, 6, 7, 8], [12, 13]]		)
						self.assertListEqual(list(batch_sampler_shards[1]		)    ,   [[3, 4], [9, 10, 11]]		)







		def  a_ (					self      :       Optional[int]    ,   a__      :       Optional[int]    ,   a__      :       Tuple    ,   a__      :       Optional[int]    ,   a__      :       Union[str, Any]=False    ,   a__      :       int=2    ,   a__      :       List[Any]=False		)       ->						str:





						'''simple docstring'''







						random.seed(a__		)
						_A					  =			list(a__		)

						_A					  =			[
						    IterableDatasetShard(
						        a__    ,   batch_size=a__    ,   drop_last=a__    ,   num_processes=a__    ,   process_index=a__    ,   split_batches=a__    ,   )
						    for i in range(a__		)
						]
						_A					  =			[]
						for iterable_dataset_shard in iterable_dataset_shards:
										# Since our random iterable dataset will be... random... we need to use a seed to get reproducible results.
										random.seed(a__		)
										iterable_dataset_lists.append(list(a__		)		)

						_A					  =			batch_size // num_processes if split_batches else batch_size
						# All iterable dataset shard should have the same length, a round multiple of shard_batch_size
						_A					  =			iterable_dataset_lists[0]
						for l in iterable_dataset_lists[1:]:
										self.assertEqual(len(a__		)    ,   len(a__		)		)
										self.assertTrue(len(a__		) % shard_batch_size == 0		)

						_A					  =			[]
						for idx in range(0    ,   len(a__		)    ,   a__		):
										for l in iterable_dataset_lists:
														observed += l[idx : idx + shard_batch_size]

						if not drop_last:
										while len(a__		) < len(a__		):
														reference += reference
						self.assertListEqual(a__    ,   reference[: len(a__		)]		)







		def  a_ (					self      :       List[str]		)       ->						List[Any]:





						'''simple docstring'''







						_A					  =			42
						_A					  =			RandomIterableDataset()

						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)

						# Edge case with a very small dataset
						_A					  =			RandomIterableDataset(max_length=2		)

						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)
						self.check_iterable_dataset_shards(a__    ,   a__    ,   batch_size=4    ,   drop_last=a__    ,   split_batches=a__		)







		def  a_ (					self      :       List[str]		)       ->						Dict:





						'''simple docstring'''







						_A					  =			BatchSampler(range(16		)    ,   batch_size=4    ,   drop_last=a__		)
						_A					  =			SkipBatchSampler(a__    ,   2		)
						self.assertListEqual(list(a__		)    ,   [[8, 9, 10, 11], [12, 13, 14, 15]]		)







		def  a_ (					self      :       int		)       ->						Union[str, Any]:





						'''simple docstring'''







						_A					  =			SkipDataLoader(list(range(16		)		)    ,   batch_size=4    ,   skip_batches=2		)
						self.assertListEqual([t.tolist() for t in dataloader]    ,   [[8, 9, 10, 11], [12, 13, 14, 15]]		)







		def  a_ (					self      :       int		)       ->						Optional[int]:





						'''simple docstring'''







						_A					  =			DataLoader(list(range(16		)		)    ,   batch_size=4		)
						_A					  =			skip_first_batches(a__    ,   num_batches=2		)
						self.assertListEqual([t.tolist() for t in new_dataloader]    ,   [[8, 9, 10, 11], [12, 13, 14, 15]]		)







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





						'''simple docstring'''







						_A					  =			DataLoaderShard(list(range(16		)		)    ,   batch_size=4		)
						for idx, _ in enumerate(a__		):
										self.assertEqual(dataloader.end_of_dataloader    ,   idx == 3		)

						# Test it also works on the second iteration
						for idx, _ in enumerate(a__		):
										self.assertEqual(dataloader.end_of_dataloader    ,   idx == 3		)







		def  a_ (					self      :       int		)       ->						int:





						'''simple docstring'''







						Accelerator()
						_A					  =			DataLoaderDispatcher(range(16		)    ,   batch_size=4		)
						for idx, _ in enumerate(a__		):
										self.assertEqual(dataloader.end_of_dataloader    ,   idx == 3		)

						# Test it also works on the second iteration
						for idx, _ in enumerate(a__		):
										self.assertEqual(dataloader.end_of_dataloader    ,   idx == 3		)