






"""simple docstring"""
from typing import List

import numpy as np

def        snake_case   (     A__		):
			UpperCAmelCase_  :				Dict      =      {key: len(snake_case__		) for key, value in gen_kwargs.items() if isinstance(snake_case__			,snake_case__		)}
			if len(set(lists_lengths.values()		)		) > 1:
						raise RuntimeError(
						    (
						        "Sharding is ambiguous for this dataset: "
						        + "we found several data sources lists of different lengths, and we don't know over which list we should parallelize:\n"
						        + "\n".join(F"""\t- key {key} has length {length}""" for key, length in lists_lengths.items()		)
						        + "\nTo fix this, check the 'gen_kwargs' and make sure to use lists only for data sources, "
						        + "and use tuples otherwise. In the end there should only be one single list, or several lists with the same length."
						    )		)
			UpperCAmelCase_  :				List[str]      =      max(lists_lengths.values()			,default=0		)
			return max(1			,snake_case__		)

def        snake_case   (     A__			,A__		):
			UpperCAmelCase_  :				Union[str, Any]      =      []
			for group_idx in range(snake_case__		):
						UpperCAmelCase_  :				Union[str, Any]      =      num_shards // max_num_jobs + (group_idx < (num_shards % max_num_jobs))
						if num_shards_to_add == 0:
									break
						UpperCAmelCase_  :				List[Any]      =      shards_indices_per_group[-1].stop if shards_indices_per_group else 0
						UpperCAmelCase_  :				List[Any]      =      range(snake_case__			,start + num_shards_to_add		)
						shards_indices_per_group.append(snake_case__		)
			return shards_indices_per_group

def        snake_case   (     A__			,A__		):
			UpperCAmelCase_  :				Union[str, Any]      =      _number_of_shards_in_gen_kwargs(snake_case__		)
			if num_shards == 1:
						return [dict(snake_case__		)]
			else:
						UpperCAmelCase_  :				List[Any]      =      _distribute_shards(num_shards=snake_case__			,max_num_jobs=snake_case__		)
						return [
						    {
						        key: [value[shard_idx] for shard_idx in shard_indices_per_group[group_idx]]
						        if isinstance(snake_case__			,snake_case__		)
						        else value
						        for key, value in gen_kwargs.items()
						    }
						    for group_idx in range(len(snake_case__		)		)
						]

def        snake_case   (     A__		):
			return {
			    key: [value for gen_kwargs in gen_kwargs_list for value in gen_kwargs[key]]
			    if isinstance(gen_kwargs_list[0][key]			,snake_case__		)
			    else gen_kwargs_list[0][key]
			    for key in gen_kwargs_list[0]
			}




def        snake_case   (     A__			,A__		):
			UpperCAmelCase_  :				Tuple      =      {len(snake_case__		) for value in gen_kwargs.values() if isinstance(snake_case__			,snake_case__		)}
			UpperCAmelCase_  :				Optional[Any]      =      {}
			for size in list_sizes:
						UpperCAmelCase_  :				str      =      list(range(snake_case__		)		)
						rng.shuffle(indices_per_size[size]		)
			# Now let's copy the gen_kwargs and shuffle the lists based on their sizes
			UpperCAmelCase_  :				Optional[Any]      =      dict(snake_case__		)
			for key, value in shuffled_kwargs.items():
						if isinstance(snake_case__			,snake_case__		):
									UpperCAmelCase_  :				List[str]      =      [value[i] for i in indices_per_size[len(snake_case__		)]]
			return shuffled_kwargs











"""simple docstring"""
class     UpperCamelCase_ :





	def __init__(   self      :				List[str]			,			lowerCAmelCase_      :				int			,			lowerCAmelCase_      :				int=None			,			lowerCAmelCase_      :				List[Any]=None		)		->    int:
				UpperCAmelCase_  :				int      =      data
				UpperCAmelCase_  :				Optional[int]      =      previous
				UpperCAmelCase_  :				int      =      next_node





	def __str__(   self      :				Dict		)		->    str:
				return f"""{self.data}"""





	def   _SCREAMING_SNAKE_CASE   (   self      :				Any		)		->    int:
				return self.data





	def   _SCREAMING_SNAKE_CASE   (   self      :				Dict		)		->    Union[str, Any]:
				return self.next





	def   _SCREAMING_SNAKE_CASE   (   self      :				Union[str, Any]		)		->    Optional[int]:
				return self.previous







class     UpperCamelCase_ :





	def __init__(   self      :				Any			,			lowerCAmelCase_      :				str		)		->    List[str]:
				UpperCAmelCase_  :				Union[str, Any]      =      head





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





	def   _SCREAMING_SNAKE_CASE   (   self      :				Union[str, Any]		)		->    str:
				if not self.current:
							raise StopIteration
				else:
							UpperCAmelCase_  :				Optional[int]      =      self.current.get_data()
							UpperCAmelCase_  :				Dict      =      self.current.get_next()
							return value







class     UpperCamelCase_ :





	def __init__(   self      :				List[str]		)		->    Tuple:
				UpperCAmelCase_  :				Tuple      =      None  # First node in list
				UpperCAmelCase_  :				Union[str, Any]      =      None  # Last node in list





	def __str__(   self      :				List[Any]		)		->    Optional[int]:
				UpperCAmelCase_  :				List[str]      =      self.head
				UpperCAmelCase_  :				int      =      []
				while current is not None:
							nodes.append(current.get_data()		)
							UpperCAmelCase_  :				Optional[Any]      =      current.get_next()
				return " ".join(str(lowerCAmelCase_		) for node in nodes		)





	def __contains__(   self      :				int			,			lowerCAmelCase_      :				int		)		->    List[str]:
				UpperCAmelCase_  :				Optional[int]      =      self.head
				while current:
							if current.get_data() == value:
										return True
							UpperCAmelCase_  :				Union[str, Any]      =      current.get_next()
				return False





	def __iter__(   self      :				int		)		->    Tuple:
				return LinkedListIterator(self.head		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				List[Any]		)		->    Optional[int]:
				if self.head:
							return self.head.get_data()
				return None





	def   _SCREAMING_SNAKE_CASE   (   self      :				str		)		->    Optional[Any]:
				if self.tail:
							return self.tail.get_data()
				return None





	def   _SCREAMING_SNAKE_CASE   (   self      :				Optional[int]			,			lowerCAmelCase_      :				Node		)		->    None:
				if self.head is None:
							UpperCAmelCase_  :				Optional[int]      =      node
							UpperCAmelCase_  :				Union[str, Any]      =      node
				else:
							self.insert_before_node(self.head			,			lowerCAmelCase_		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				Tuple			,			lowerCAmelCase_      :				Node		)		->    None:
				if self.head is None:
							self.set_head(lowerCAmelCase_		)
				else:
							self.insert_after_node(self.tail			,			lowerCAmelCase_		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				int			,			lowerCAmelCase_      :				int		)		->    None:
				UpperCAmelCase_  :				Optional[Any]      =      Node(lowerCAmelCase_		)
				if self.head is None:
							self.set_head(lowerCAmelCase_		)
				else:
							self.set_tail(lowerCAmelCase_		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				List[Any]			,			lowerCAmelCase_      :				Node			,			lowerCAmelCase_      :				Node		)		->    None:
				UpperCAmelCase_  :				Any      =      node
				UpperCAmelCase_  :				Tuple      =      node.previous

				if node.get_previous() is None:
							UpperCAmelCase_  :				List[Any]      =      node_to_insert
				else:
							UpperCAmelCase_  :				Dict      =      node_to_insert

				UpperCAmelCase_  :				Dict      =      node_to_insert





	def   _SCREAMING_SNAKE_CASE   (   self      :				Optional[int]			,			lowerCAmelCase_      :				Node			,			lowerCAmelCase_      :				Node		)		->    None:
				UpperCAmelCase_  :				Dict      =      node
				UpperCAmelCase_  :				int      =      node.next

				if node.get_next() is None:
							UpperCAmelCase_  :				int      =      node_to_insert
				else:
							UpperCAmelCase_  :				Optional[Any]      =      node_to_insert

				UpperCAmelCase_  :				Any      =      node_to_insert





	def   _SCREAMING_SNAKE_CASE   (   self      :				Tuple			,			lowerCAmelCase_      :				int			,			lowerCAmelCase_      :				int		)		->    None:
				UpperCAmelCase_  :				int      =      1
				UpperCAmelCase_  :				List[str]      =      Node(lowerCAmelCase_		)
				UpperCAmelCase_  :				Optional[Any]      =      self.head
				while node:
							if current_position == position:
										self.insert_before_node(lowerCAmelCase_			,			lowerCAmelCase_		)
										return
							current_position += 1
							UpperCAmelCase_  :				Optional[Any]      =      node.next
				self.insert_after_node(self.tail			,			lowerCAmelCase_		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				Optional[Any]			,			lowerCAmelCase_      :				int		)		->    Node:
				UpperCAmelCase_  :				List[Any]      =      self.head
				while node:
							if node.get_data() == item:
										return node
							UpperCAmelCase_  :				Optional[int]      =      node.get_next()
				raise Exception("Node not found"		)





	def   _SCREAMING_SNAKE_CASE   (   self      :				str			,			lowerCAmelCase_      :				List[str]		)		->    Union[str, Any]:
				if (node := self.get_node(lowerCAmelCase_		)) is not None:
							if node == self.head:
										UpperCAmelCase_  :				Tuple      =      self.head.get_next()

							if node == self.tail:
										UpperCAmelCase_  :				Optional[int]      =      self.tail.get_previous()

							self.remove_node_pointers(lowerCAmelCase_		)





	@staticmethod
	def   _SCREAMING_SNAKE_CASE   (   lowerCAmelCase_      :				Node		)		->    None:
				if node.get_next():
							UpperCAmelCase_  :				int      =      node.previous

				if node.get_previous():
							UpperCAmelCase_  :				Optional[Any]      =      node.next

				UpperCAmelCase_  :				Optional[int]      =      None
				UpperCAmelCase_  :				Dict      =      None





	def   _SCREAMING_SNAKE_CASE   (   self      :				Union[str, Any]		)		->    str:
				return self.head is None





def        snake_case   (     ):
			pass


if __name__ == "__main__":
			import doctest

			doctest.testmod()



