code: 
  """simple docstring"""
  
  
  
  
  
  import importlib
  import inspect
  from functools import wraps
  from typing import TYPE_CHECKING, Optional, Union
  
  from .download.streaming_download_manager import (
      xbasename,
      xdirname,
      xet_parse,
      xexists,
      xgetsize,
      xglob,
      xgzip_open,
      xisdir,
      xisfile,
      xjoin,
      xlistdir,
      xnumpy_load,
      xopen,
      xpandas_read_csv,
      xpandas_read_excel,
      xPath,
      xrelpath,
      xsio_loadmat,
      xsplit,
      xsplitext,
      xwalk,
      xxml_dom_minidom_parse,
  )
  from .utils.logging import get_logger
  from .utils.patching import patch_submodule
  from .utils.py_utils import get_imports
  
  
  _a	 =							get_logger(__name__)
  
  
  if TYPE_CHECKING:
      from .builder import DatasetBuilder
  
  
  
  
  
  
  
  def 			__a  (	__lowerCamelCase,	__lowerCamelCase = None						):
     UpperCAmelCase_      :      int      =					importlib.import_module(__lowerCamelCase						)
  
     # TODO(QL): always update the module to add subsequent new authentication
     if hasattr(__lowerCamelCase,	"_patched_for_streaming"						) and module._patched_for_streaming:
        return
  
     def wrap_auth(__lowerCamelCase						):
        @wraps(__lowerCamelCase						)
        def wrapper(*__lowerCamelCase,	**__lowerCamelCase						):
           return function(*__lowerCamelCase,	use_auth_token=__lowerCamelCase,	**__lowerCamelCase						)
  
        UpperCAmelCase_      :      Tuple      =					"wrap_auth"
        return wrapper
  
     # open files in a streaming fashion
     patch_submodule(__lowerCamelCase,	"open",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"os.listdir",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"os.walk",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"glob.glob",	wrap_auth(__lowerCamelCase						)						).start()
     # allow to navigate in remote zip files
     patch_submodule(__lowerCamelCase,	"os.path.join",	__lowerCamelCase						).start()
     patch_submodule(__lowerCamelCase,	"os.path.dirname",	__lowerCamelCase						).start()
     patch_submodule(__lowerCamelCase,	"os.path.basename",	__lowerCamelCase						).start()
     patch_submodule(__lowerCamelCase,	"os.path.relpath",	__lowerCamelCase						).start()
     patch_submodule(__lowerCamelCase,	"os.path.split",	__lowerCamelCase						).start()
     patch_submodule(__lowerCamelCase,	"os.path.splitext",	__lowerCamelCase						).start()
     # allow checks on paths
     patch_submodule(__lowerCamelCase,	"os.path.exists",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"os.path.isdir",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"os.path.isfile",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"os.path.getsize",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"pathlib.Path",	__lowerCamelCase						).start()
     # file readers
     patch_submodule(__lowerCamelCase,	"gzip.open",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"numpy.load",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"pandas.read_csv",	wrap_auth(__lowerCamelCase						),	attrs=["__version__"]						).start()
     patch_submodule(__lowerCamelCase,	"pandas.read_excel",	wrap_auth(__lowerCamelCase						),	attrs=["__version__"]						).start()
     patch_submodule(__lowerCamelCase,	"scipy.io.loadmat",	wrap_auth(__lowerCamelCase						),	attrs=["__version__"]						).start()
     patch_submodule(__lowerCamelCase,	"xml.etree.ElementTree.parse",	wrap_auth(__lowerCamelCase						)						).start()
     patch_submodule(__lowerCamelCase,	"xml.dom.minidom.parse",	wrap_auth(__lowerCamelCase						)						).start()
     UpperCAmelCase_      :      List[str]      =					True
  
  
  
  
  
  
  
  def 			__a  (	__lowerCamelCase						):
     extend_module_for_streaming(builder.__module__,	use_auth_token=builder.use_auth_token						)
     # if needed, we also have to extend additional internal imports (like wmt14 -> wmt_utils)
     if not builder.__module__.startswith("datasets."						):  # check that it's not a packaged builder like csv
        for imports in get_imports(inspect.getfile(builder.__class__						)						):
           if imports[0] == "internal":
              UpperCAmelCase_      :      Tuple      =					imports[1]
              UpperCAmelCase_      :      int      =					".".join(builder.__module__.split("."						)[:-1] + [internal_import_name]						)
              extend_module_for_streaming(__lowerCamelCase,	use_auth_token=builder.use_auth_token						)
  
      # builders can inherit from other builders that might use streaming functionality
      # (for example, ImageFolder and AudioFolder inherit from FolderBuilder which implements examples generation)
      # but these parents builders are not patched automatically as they are not instantiated, so we patch them here
     from .builder import DatasetBuilder
  
     UpperCAmelCase_      :      Union[str, Any]      =					[
         cls.__module__
         for cls in type(__lowerCamelCase						).__mro__[1:]  # make sure it's not the same module we've already patched
         if issubclass(cls,	__lowerCamelCase						) and cls.__module__ != DatasetBuilder.__module__
     ]  # check it's not a standard builder from datasets.builder
     for module in parent_builder_modules:
        extend_module_for_streaming(__lowerCamelCase,	use_auth_token=builder.use_auth_token						)
  
  
  
style_context: 
  """simple docstring"""
  
  
  
  
  
  from __future__ import annotations
  
  from typing import Any
  
  
  class A_			:
  
  
  
  
    '''simple docstring'''
  
  
  
  
  
  
  
    def __init__(	self       ,     lowercase_       ,     lowercase_						):  # noqa: A002
  
       """simple docstring"""
       UpperCAmelCase_      :      Optional[Any]      =					item
       UpperCAmelCase_      :      Optional[Any]      =					next
  
  
  
  
  class A_			:
  
  
  
  
    '''simple docstring'''
  
  
  
  
  
  
  
    def __init__(	self						):
  
       """simple docstring"""
       UpperCAmelCase_      :      Node | None      =					None
       UpperCAmelCase_      :      Optional[int]      =					0
  
  
  
  
  
  
  
    def  UpperCamelCase__      (	self       ,     lowercase_						):
  
       """simple docstring"""
       UpperCAmelCase_      :      int      =					Node(lowercase_       ,     self.head						)
       self.size += 1
  
  
  
  
  
  
  
    def  UpperCamelCase__      (	self						):
  
       """simple docstring"""
       # Switched 'self.is_empty()' to 'self.head is None'
       # because mypy was considering the possibility that 'self.head'
       # can be None in below else part and giving error
       if self.head is None:
          return None
       else:
          UpperCAmelCase_      :      int      =					self.head.item
          UpperCAmelCase_      :      str      =					self.head.next
          self.size -= 1
          return item
  
  
  
  
  
  
  
    def  UpperCamelCase__      (	self						):
  
       """simple docstring"""
       return self.head is None
  
  
  
  
  
  
  
    def __str__(	self						):
  
       """simple docstring"""
       if self.is_empty():
          return ""
       else:
          UpperCAmelCase_      :      str      =					self.head
          UpperCAmelCase_      :      str      =					""
          UpperCAmelCase_      :      list[str]      =					[]
          while iterate:
             item_list.append(str(iterate.item						)						)
             UpperCAmelCase_      :      Tuple      =					iterate.next
  
          UpperCAmelCase_      :      Optional[Any]      =					" --> ".join(lowercase_						)
  
          return item_str
  
  
  
  
  
  
  
    def __len__(	self						):
  
       """simple docstring"""
       return self.size
  
  
  