code: 
  
  
  
  
  '''simple docstring'''
  
  
  
  
  
  from typing import Optional
  
  from ..utils.logging import get_logger
  from .audio_classificiation import AudioClassification
  from .automatic_speech_recognition import AutomaticSpeechRecognition
  from .base import TaskTemplate
  from .image_classification import ImageClassification
  from .language_modeling import LanguageModeling
  from .question_answering import QuestionAnsweringExtractive
  from .summarization import Summarization
  from .text_classification import TextClassification
  
  
  A			=	[
      '''AutomaticSpeechRecognition''',
      '''AudioClassification''',
      '''ImageClassification''',
      '''LanguageModeling''',
      '''QuestionAnsweringExtractive''',
      '''Summarization''',
      '''TaskTemplate''',
      '''TextClassification''',
  ]
  
  A			=	get_logger(__name__)
  
  
  A			=	{
      AutomaticSpeechRecognition.task: AutomaticSpeechRecognition,
      AudioClassification.task: AudioClassification,
      ImageClassification.task: ImageClassification,
      LanguageModeling.task: LanguageModeling,
      QuestionAnsweringExtractive.task: QuestionAnsweringExtractive,
      Summarization.task: Summarization,
      TextClassification.task: TextClassification,
  }
  
  
  def 				UpperCamelCase	(  snake_case   ):
  
  
  
  
     '''simple docstring'''
  
     SCREAMING_SNAKE_CASE__			:				Union[str, Any]       						= task_template_dict.get('''task'''   )
     if task_name is None:
        logger.warning(f"""Couldn't find template for task '{task_name}'. Available templates: {list(UpperCamelCase__   )}"""   )
        return None
     SCREAMING_SNAKE_CASE__			:				List[Any]       						= NAMEaTEMPLATE.get(UpperCamelCase__   )
     return template.from_dict(UpperCamelCase__   )
  
  
style_context: 
  
  
  
  
  '''simple docstring'''
  
  
  
  
  
  lowercase__			=	{
      '''+''': lambda x, y: x + y,
      '''-''': lambda x, y: x - y,
      '''*''': lambda x, y: x * y,
      '''/''': lambda x, y: x / y,
  }
  
  
  def 				UpperCamelCase	(  snake_case   ):
  
  
  
  
     '''simple docstring'''
  
     return c.isdigit()
  
  
  def 				UpperCamelCase	(  snake_case   ):
  
  
  
  
     '''simple docstring'''
  
     SCREAMING_SNAKE_CASE__			:				Union[str, Any]       						= []
  
     # iterate over the string in reverse order
     for c in expression.split()[::-1]:
        # push operand to stack
        if is_operand(snake_case   ):
           stack.append(int(snake_case   )   )
  
        else:
           # pop values from stack can calculate the result
           # push the result onto the stack again
           SCREAMING_SNAKE_CASE__			:				Dict       						= stack.pop()
           SCREAMING_SNAKE_CASE__			:				Any       						= stack.pop()
           stack.append(calc[c](snake_case	,     snake_case   )   )
  
     return stack.pop()
  
  
  # Driver code
  if __name__ == "__main__":
         lowercase__			=	'''+ 9 * 2 6'''
         print(evaluate(test_expression))
  
         lowercase__			=	'''/ * 10 2 + 4 1 '''
         print(evaluate(test_expression))
  
  