"""simple docstring"""


import sys
from dataclasses import dataclass
from typing import TYPE_CHECKING, Dict, List, Optional, Tuple, Union

import pandas as pd
import pyarrow as pa

import datasets
import datasets.config
from datasets.features.features import require_storage_cast
from datasets.table import table_cast


if TYPE_CHECKING:
  import sqlitea

  import sqlalchemy


__UpperCamelCase       :    List[Any]         =		datasets.utils.logging.get_logger(__name__)
@dataclass
class   UpperCAmelCase_	(				datasets.BuilderConfig   ):
    snake_case_											=      None
    snake_case_											=      None
    snake_case_											=      None
    snake_case_											=      True
    snake_case_											=      None
    snake_case_											=      None
    snake_case_											=      None
    snake_case_											=      1_0000
    snake_case_											=      None
    def 		_lowerCamelCase      (	self			:       Union[str, Any]		)						->    List[Any]:
       if self.sql is None:
          raise ValueError("sql must be specified"		)
       if self.con is None:
          raise ValueError("con must be specified"		)
    def 		_lowerCamelCase      (	self			:       int   ,						_lowercase			:       dict   ,						_lowercase			:       Optional[datasets.Features] = None   ,						)						->    str:
       _lowercase							     =       config_kwargs.copy()
       # We need to stringify the Selectable object to make its hash deterministic

       # The process of stringifying is explained here: http://docs.sqlalchemy.org/en/latest/faq/sqlexpressions.html
       _lowercase							     =       config_kwargs["sql"]
       if not isinstance(__lowerCamelCase   ,						__lowerCamelCase		):
          if datasets.config.SQLALCHEMY_AVAILABLE and "sqlalchemy" in sys.modules:
             import sqlalchemy

             if isinstance(__lowerCamelCase   ,						sqlalchemy.sql.Selectable		):
                _lowercase							     =       sqlalchemy.create_engine(config_kwargs["con"].split("://"		)[0] + "://"		)
                _lowercase							     =       str(sql.compile(dialect=engine.dialect		)		)
                _lowercase							     =       sql_str
             else:
                raise TypeError(
                    f"""Supported types for 'sql' are string and sqlalchemy.sql.Selectable but got {type(__lowerCamelCase		)}: {sql}"""		)
          else:
             raise TypeError(
                 f"""Supported types for 'sql' are string and sqlalchemy.sql.Selectable but got {type(__lowerCamelCase		)}: {sql}"""		)
       _lowercase							     =       config_kwargs["con"]
       if not isinstance(__lowerCamelCase   ,						__lowerCamelCase		):
          _lowercase							     =       id(__lowerCamelCase		)
          logger.info(
              f"""SQL connection 'con' of type {type(__lowerCamelCase		)} couldn't be hashed properly. To enable hashing, specify 'con' as URI string instead."""		)

       return super().create_config_id(__lowerCamelCase   ,						custom_features=__lowerCamelCase		)




    @property
    def 		_lowerCamelCase      (	self			:       Dict		)						->    Any:
       _lowercase							     =       {
           "index_col": self.index_col,
           "columns": self.columns,
           "params": self.params,
           "coerce_float": self.coerce_float,
           "parse_dates": self.parse_dates,
       }
       return pd_read_sql_kwargs
class   UpperCAmelCase_	(				datasets.ArrowBasedBuilder   ):
    snake_case_											=      SqlConfig
    def 		_lowerCamelCase      (	self			:       Optional[Any]		)						->    Optional[Any]:
       return datasets.DatasetInfo(features=self.config.features		)
    def 		_lowerCamelCase      (	self			:       Optional[Any]   ,						_lowercase			:       Dict		)						->    Union[str, Any]:
       return [datasets.SplitGenerator(name=datasets.Split.TRAIN   ,						gen_kwargs={}		)]
    def 		_lowerCamelCase      (	self			:       List[Any]   ,						_lowercase			:       pa.Table		)						->    pa.Table:
       if self.config.features is not None:
          _lowercase							     =       self.config.features.arrow_schema
          if all(not require_storage_cast(__lowerCamelCase		) for feature in self.config.features.values()		):
             # cheaper cast
             _lowercase							     =       pa.Table.from_arrays([pa_table[field.name] for field in schema]   ,						schema=__lowerCamelCase		)
          else:
             # more expensive cast; allows str <-> int/float or str to Audio for example
             _lowercase							     =       table_cast(__lowerCamelCase   ,						__lowerCamelCase		)
       return pa_table




    def 		_lowerCamelCase      (	self			:       int		)						->    Any:
       _lowercase							     =       self.config.chunksize
       _lowercase							     =       pd.read_sql(
           self.config.sql   ,						self.config.con   ,						chunksize=__lowerCamelCase   ,						**self.config.pd_read_sql_kwargs		)
       _lowercase							     =       [sql_reader] if chunksize is None else sql_reader
       for chunk_idx, df in enumerate(__lowerCamelCase		):
          _lowercase							     =       pa.Table.from_pandas(__lowerCamelCase		)
          yield chunk_idx, self._cast_table(__lowerCamelCase		)





class        snake_case__				:
				"""simple docstring"""



				def __init__( self							:	List[str]   , __lowerCamelCase							:	int				)   ->	None:
							a       =     data
							a       =     42
							a       =     42




def      __magic_name__							(					A						:   Node  ):






			'''simple docstring'''







			a       =     0
			a       =     x




def      __magic_name__							(					A						:   Node,    A						:   Node  ):






			'''simple docstring'''







			a       ,						a       =     find_set(A  ), find_set(A  )
			if x == y:
						return

			elif x.rank > y.rank:
						a       =     x
			else:
						a       =     y
						if x.rank == y.rank:
									y.rank += 1




def      __magic_name__							(					A						:   Node  ):






			'''simple docstring'''







			if x != x.parent:
						a       =     find_set(x.parent  )
			return x.parent




def      __magic_name__							(					A						:   Node  ):






			'''simple docstring'''







			a       =     ({0, 1, 2}, {3, 4, 5})
			for s in sets:
						if node.data in s:
									return s
			a       =     F"""{node.data} is not in {sets}"""
			raise ValueError(A  )




def      __magic_name__							(					):






			'''simple docstring'''







			a       =     [Node(A  ) for i in range(6  )]
			for v in vertex:
						make_set(A  )

			union_set(vertex[0],    vertex[1]  )
			union_set(vertex[1],    vertex[2]  )
			union_set(vertex[3],    vertex[4]  )
			union_set(vertex[3],    vertex[5]  )

			for nodea in vertex:
						for nodea in vertex:
									if find_python_set(A  ).isdisjoint(find_python_set(A  )  ):
												assert find_set(A  ) != find_set(A  )
									else:
												assert find_set(A  ) == find_set(A  )


if __name__ == "__main__":
		test_disjoint_set()






