





'''simple docstring'''


import multiprocessing
import os
from typing import BinaryIO, Optional, Union

from .. import Dataset, Features, NamedSplit, config
from ..formatting import query_table
from ..packaged_modules.csv.csv import Csv
from ..utils import logging
from ..utils.typing import NestedDataStructureLike, PathLike
from .abc import AbstractDatasetReader
class    a_     (       _lowerCAmelCase							):





     def __init__(				self	:      Dict			,   lowercase	:      NestedDataStructureLike[PathLike]			,   lowercase	:      Optional[NamedSplit] = None			,   lowercase	:      Optional[Features] = None			,   lowercase	:      str = None			,   lowercase	:      bool = False			,   lowercase	:      bool = False			,   lowercase	:      Optional[int] = None			,   **lowercase	:      Any			,   ):





        """simple docstring"""




        super().__init__(
            lowercase			,   split=lowercase			,   features=lowercase			,   cache_dir=lowercase			,   keep_in_memory=lowercase			,   streaming=lowercase			,   num_proc=lowercase			,   **lowercase			,   )
        lowercase_    :Any					    =				path_or_paths if isinstance(lowercase			,   lowercase		) else {self.split: path_or_paths}
        lowercase_    :Any					    =				Csv(
            cache_dir=lowercase			,   data_files=lowercase			,   features=lowercase			,   **lowercase			,   )







     def 							lowercase__   (				self	:      Any		):





        """simple docstring"""




        if self.streaming:
           lowercase_    :Union[str, Any]					    =				self.builder.as_streaming_dataset(split=self.split		)
        # Build regular (map-style) dataset
        else:
           lowercase_    :Dict					    =				None
           lowercase_    :List[str]					    =				None
           lowercase_    :List[Any]					    =				None
           lowercase_    :Union[str, Any]					    =				None

           self.builder.download_and_prepare(
               download_config=lowercase			,   download_mode=lowercase			,   verification_mode=lowercase			,   base_path=lowercase			,   num_proc=self.num_proc			,   )
           lowercase_    :int					    =				self.builder.as_dataset(
               split=self.split			,   verification_mode=lowercase			,   in_memory=self.keep_in_memory		)
        return dataset







class    a_     :





     def __init__(				self	:      Dict			,   lowercase	:      Dataset			,   lowercase	:      Union[PathLike, BinaryIO]			,   lowercase	:      Optional[int] = None			,   lowercase	:      Optional[int] = None			,   **lowercase	:      Any			,   ):





        """simple docstring"""




        if num_proc is not None and num_proc <= 0:
           raise ValueError(F'num_proc {num_proc} must be an integer > 0.'		)

        lowercase_    :str					    =				dataset
        lowercase_    :List[Any]					    =				path_or_buf
        lowercase_    :Any					    =				batch_size if batch_size else config.DEFAULT_MAX_BATCH_SIZE
        lowercase_    :int					    =				num_proc
        lowercase_    :Optional[Any]					    =				"utf-8"
        lowercase_    :Dict					    =				to_csv_kwargs





     def 							lowercase__   (				self	:      Union[str, Any]		):





        """simple docstring"""




        lowercase_    :int					    =				self.to_csv_kwargs.pop("path_or_buf"			,   lowercase		)
        lowercase_    :List[str]					    =				self.to_csv_kwargs.pop("header"			,   lowercase		)
        lowercase_    :Optional[Any]					    =				self.to_csv_kwargs.pop("index"			,   lowercase		)

        if isinstance(self.path_or_buf			,   (str, bytes, os.PathLike)		):
           with open(self.path_or_buf			,   "wb+"		) as buffer:
              lowercase_    :List[Any]					    =				self._write(file_obj=lowercase			,   header=lowercase			,   index=lowercase			,   **self.to_csv_kwargs		)
        else:
           lowercase_    :Any					    =				self._write(file_obj=self.path_or_buf			,   header=lowercase			,   index=lowercase			,   **self.to_csv_kwargs		)
        return written





     def 							lowercase__   (				self	:      List[Any]			,   lowercase	:      Union[str, Any]		):





        """simple docstring"""




        lowercase_    ,							lowercase_    ,							lowercase_    ,							lowercase_    :Optional[Any]					    =				args

        lowercase_    :Dict					    =				query_table(
            table=self.dataset.data			,   key=slice(lowercase			,   offset + self.batch_size		)			,   indices=self.dataset._indices			,   )
        lowercase_    :List[str]					    =				batch.to_pandas().to_csv(
            path_or_buf=lowercase			,   header=header if (offset == 0) else False			,   index=lowercase			,   **lowercase		)
        return csv_str.encode(self.encoding		)







     def 							lowercase__   (				self	:      Dict			,   lowercase	:      BinaryIO			,   lowercase	:      Dict			,   lowercase	:      int			,   **lowercase	:      Any		):





        """simple docstring"""




        lowercase_    :Dict					    =				0

        if self.num_proc is None or self.num_proc == 1:
           for offset in logging.tqdm(
               range(0			,   len(self.dataset		)			,   self.batch_size		)			,   unit="ba"			,   disable=not logging.is_progress_bar_enabled()			,   desc="Creating CSV from Arrow format"			,   ):
              lowercase_    :Optional[Any]					    =				self._batch_csv((offset, header, index, to_csv_kwargs)		)
              written += file_obj.write(lowercase		)

        else:
           lowercase_    ,							lowercase_    :Optional[int]					    =				len(self.dataset		), self.batch_size
           with multiprocessing.Pool(self.num_proc		) as pool:
              for csv_str in logging.tqdm(
                  pool.imap(
                      self._batch_csv			,   [(offset, header, index, to_csv_kwargs) for offset in range(0			,   lowercase			,   lowercase		)]			,   )			,   total=(num_rows // batch_size) + 1 if num_rows % batch_size else num_rows // batch_size			,   unit="ba"			,   disable=not logging.is_progress_bar_enabled()			,   desc="Creating CSV from Arrow format"			,   ):
                 written += file_obj.write(lowercase		)

        return written









'''simple docstring'''


class    a_     :





     def __init__(				self	:      str			,   lowercase	:      List[Any]		):





        """simple docstring"""




        lowercase_    :List[str]					    =				val
        # Number of nodes in left subtree
        lowercase_    :Optional[int]					    =				0
        lowercase_    :List[str]					    =				None
        lowercase_    :List[Any]					    =				None
        lowercase_    :Optional[Any]					    =				None







     def 							lowercase__   (				self	:      Union[str, Any]			,   lowercase	:      Dict		):





        """simple docstring"""




        assert self.left_tree_size == other.left_tree_size, "Unequal Sizes of Blocks"

        if self.val < other.val:
           lowercase_    :List[Any]					    =				self.right
           lowercase_    :str					    =				None
           if self.right:
              lowercase_    :Optional[int]					    =				other
           lowercase_    :Optional[Any]					    =				other
           lowercase_    :str					    =				self.left_tree_size * 2 + 1
           return self
        else:
           lowercase_    :Any					    =				other.right
           lowercase_    :Any					    =				None
           if other.right:
              lowercase_    :List[Any]					    =				self
           lowercase_    :Union[str, Any]					    =				self
           lowercase_    :Optional[int]					    =				other.left_tree_size * 2 + 1
           return other







class    a_     :





     def __init__(				self	:      Optional[Any]			,   lowercase	:      Any=None			,   lowercase	:      Optional[Any]=None			,   lowercase	:      int=0		):





        """simple docstring"""




        lowercase_    :Optional[int]					    =				heap_size
        lowercase_    :List[str]					    =				bottom_root
        lowercase_    :Dict					    =				min_node





     def 							lowercase__   (				self	:      List[str]			,   lowercase	:      List[Any]		):





        """simple docstring"""




        if other.size == 0:
           return None
        if self.size == 0:
           lowercase_    :Dict					    =				other.size
           lowercase_    :int					    =				other.bottom_root
           lowercase_    :Tuple					    =				other.min_node
           return None
        # Update size
        lowercase_    :Optional[int]					    =				self.size + other.size

        # Update min.node
        if self.min_node.val > other.min_node.val:
           lowercase_    :int					    =				other.min_node
        # Merge

        # Order roots by left_subtree_size
        lowercase_    :Any					    =				[]
        lowercase_    ,							lowercase_    :List[str]					    =				self.bottom_root, other.bottom_root
        while i or j:
           if i and ((not j) or i.left_tree_size < j.left_tree_size):
              combined_roots_list.append((i, True)		)
              lowercase_    :str					    =				i.parent
           else:
              combined_roots_list.append((j, False)		)
              lowercase_    :Dict					    =				j.parent
        # Insert links between them
        for i in range(len(lowercase		) - 1		):
           if combined_roots_list[i][1] != combined_roots_list[i + 1][1]:
              lowercase_    :Dict					    =				combined_roots_list[i + 1][0]
              lowercase_    :str					    =				combined_roots_list[i][0]
        # Consecutively merge roots with same left_tree_size
        lowercase_    :int					    =				combined_roots_list[0][0]
        while i.parent:
           if (
               (i.left_tree_size == i.parent.left_tree_size) and (not i.parent.parent)
           ) or (
               i.left_tree_size == i.parent.left_tree_size
               and i.left_tree_size != i.parent.parent.left_tree_size
           ):
              # Neighbouring Nodes
              lowercase_    :List[Any]					    =				i.left
              lowercase_    :Any					    =				i.parent.parent

              # Merging trees
              lowercase_    :Any					    =				i.merge_trees(i.parent		)

              # Updating links
              lowercase_    :List[Any]					    =				previous_node
              lowercase_    :int					    =				next_node
              if previous_node:
                 lowercase_    :int					    =				i
              if next_node:
                 lowercase_    :str					    =				i
           else:
              lowercase_    :str					    =				i.parent
        # Updating self.bottom_root
        while i.left:
           lowercase_    :List[str]					    =				i.left
        lowercase_    :List[str]					    =				i

        # Update other
        lowercase_    :Any					    =				self.size
        lowercase_    :Optional[Any]					    =				self.bottom_root
        lowercase_    :int					    =				self.min_node

        # Return the merged heap
        return self





     def 							lowercase__   (				self	:      int			,   lowercase	:      List[Any]		):





        """simple docstring"""




        if self.size == 0:
           lowercase_    :Dict					    =				Node(lowercase		)
           lowercase_    :Optional[Any]					    =				1
           lowercase_    :Optional[Any]					    =				self.bottom_root
        else:
           # Create new node
           lowercase_    :Union[str, Any]					    =				Node(lowercase		)

           # Update size
           self.size += 1

           # update min_node
           if val < self.min_node.val:
              lowercase_    :Union[str, Any]					    =				new_node
           # Put new_node as a bottom_root in heap
           lowercase_    :int					    =				new_node
           lowercase_    :List[str]					    =				self.bottom_root
           lowercase_    :Any					    =				new_node

           # Consecutively merge roots with same left_tree_size
           while (
               self.bottom_root.parent
               and self.bottom_root.left_tree_size
               == self.bottom_root.parent.left_tree_size
           ):
              # Next node
              lowercase_    :int					    =				self.bottom_root.parent.parent

              # Merge
              lowercase_    :Union[str, Any]					    =				self.bottom_root.merge_trees(self.bottom_root.parent		)

              # Update Links
              lowercase_    :Optional[Any]					    =				next_node
              lowercase_    :Any					    =				None
              if next_node:
                 lowercase_    :Union[str, Any]					    =				self.bottom_root





     def 							lowercase__   (				self	:      str		):





        """simple docstring"""




        return self.min_node.val





     def 							lowercase__   (				self	:      Optional[int]		):





        """simple docstring"""




        return self.size == 0





     def 							lowercase__   (				self	:      str		):





        """simple docstring"""




        lowercase_    :str					    =				self.min_node.val

        # Last element in heap corner case
        if self.size == 1:
           # Update size
           lowercase_    :Dict					    =				0

           # Update bottom root
           lowercase_    :int					    =				None

           # Update min_node
           lowercase_    :Tuple					    =				None

           return min_value
        # No right subtree corner case
        # The structure of the tree implies that this should be the bottom root
        # and there is at least one other root
        if self.min_node.right is None:
           # Update size
           self.size -= 1

           # Update bottom root
           lowercase_    :Optional[Any]					    =				self.bottom_root.parent
           lowercase_    :Tuple					    =				None

           # Update min_node
           lowercase_    :Dict					    =				self.bottom_root
           lowercase_    :List[str]					    =				self.bottom_root.parent
           while i:
              if i.val < self.min_node.val:
                 lowercase_    :Union[str, Any]					    =				i
              lowercase_    :Dict					    =				i.parent
           return min_value
        # General case
        # Find the BinomialHeap of the right subtree of min_node
        lowercase_    :List[str]					    =				self.min_node.right
        lowercase_    :Dict					    =				None
        lowercase_    :str					    =				bottom_of_new
        lowercase_    :Optional[int]					    =				1

        # Size, min_node and bottom_root
        while bottom_of_new.left:
           lowercase_    :List[Any]					    =				size_of_new * 2 + 1
           lowercase_    :Union[str, Any]					    =				bottom_of_new.left
           if bottom_of_new.val < min_of_new.val:
              lowercase_    :Optional[int]					    =				bottom_of_new
        # Corner case of single root on top left path
        if (not self.min_node.left) and (not self.min_node.parent):
           lowercase_    :Optional[int]					    =				size_of_new
           lowercase_    :Union[str, Any]					    =				bottom_of_new
           lowercase_    :Dict					    =				min_of_new
           # print("Single root, multiple nodes case")
           return min_value
        # Remaining cases
        # Construct heap of right subtree
        lowercase_    :Tuple					    =				BinomialHeap(
            bottom_root=lowercase			,   min_node=lowercase			,   heap_size=lowercase		)

        # Update size
        lowercase_    :Dict					    =				self.size - 1 - size_of_new

        # Neighbour nodes
        lowercase_    :Optional[Any]					    =				self.min_node.left
        lowercase_    :str					    =				self.min_node.parent

        # Initialize new bottom_root and min_node
        lowercase_    :int					    =				previous_node or next_node
        lowercase_    :Any					    =				next_node

        # Update links of previous_node and search below for new min_node and
        # bottom_root
        if previous_node:
           lowercase_    :int					    =				next_node

           # Update bottom_root and search for min_node below
           lowercase_    :str					    =				previous_node
           lowercase_    :List[Any]					    =				previous_node
           while self.bottom_root.left:
              lowercase_    :List[str]					    =				self.bottom_root.left
              if self.bottom_root.val < self.min_node.val:
                 lowercase_    :List[Any]					    =				self.bottom_root
        if next_node:
           lowercase_    :List[Any]					    =				previous_node

           # Search for new min_node above min_node
           lowercase_    :Dict					    =				next_node
           while i:
              if i.val < self.min_node.val:
                 lowercase_    :Optional[Any]					    =				i
              lowercase_    :str					    =				i.parent
        # Merge heaps
        self.merge_heaps(lowercase		)

        return min_value





     def 							lowercase__   (				self	:      Dict		):





        """simple docstring"""




        lowercase_    :Optional[Any]					    =				self.bottom_root
        while top_root.parent:
           lowercase_    :int					    =				top_root.parent
        # preorder
        lowercase_    :List[str]					    =				[]
        self.__traversal(lowercase			,   lowercase		)
        return heap_pre_order





     def 							lowercase__   (				self	:      Union[str, Any]			,   lowercase	:      List[Any]			,   lowercase	:      List[str]			,   lowercase	:      Dict=0		):





        """simple docstring"""




        if curr_node:
           preorder.append((curr_node.val, level)		)
           self.__traversal(curr_node.left			,   lowercase			,   level + 1		)
           self.__traversal(curr_node.right			,   lowercase			,   level + 1		)
        else:
           preorder.append(("#", level)		)







     def __str__(				self	:      Optional[int]		):





        """simple docstring"""




        if self.is_empty():
           return ""
        lowercase_    :int					    =				self.pre_order()

        return "\n".join(("-" * level + str(lowercase		)) for value, level in preorder_heap		)


# Unit Tests
if __name__ == "__main__":
 import doctest

 doctest.testmod()


