code: 
  
  
  
  
  
  '''simple docstring'''
  
  
  
  
  def 	__lowerCamelCase (  UpperCAmelCase_       )      ->bool:
  	if not isinstance(UpperCAmelCase_				,							UpperCAmelCase_       ):
  		raise ValueError('Input series is not valid, valid series - [2, 4, 8]'       )
  	if len(UpperCAmelCase_       ) == 0:
  		raise ValueError('Input list must be a non empty list'       )
  	if len(UpperCAmelCase_       ) == 1:
  		return True
  	try:
  		snake_case__  					=      series[1] / series[0]
  		for index in range(len(UpperCAmelCase_       ) - 1       ):
  			if series[index + 1] / series[index] != common_ratio:
  				return False
  	except ZeroDivisionError:
  		return False
  	return True
  
  
  
  
  def 	__lowerCamelCase (  UpperCAmelCase_       )      ->float:
  	if not isinstance(UpperCAmelCase_				,							UpperCAmelCase_       ):
  		raise ValueError('Input series is not valid, valid series - [2, 4, 8]'       )
  	if len(UpperCAmelCase_       ) == 0:
  		raise ValueError('Input list must be a non empty list'       )
  	snake_case__  					=      1
  	for value in series:
  		answer *= value
  	return pow(UpperCAmelCase_				,							1 / len(UpperCAmelCase_       )       )
  
  
  if __name__ == "__main__":
  			import doctest
  
  			doctest.testmod()
  
  
  
  
style_context: 
  
  
  
  
  
  '''simple docstring'''
  
  
  
  
  def 	__lowerCamelCase (  UpperCAmelCase_       )      ->int:
  	return 1 if input_a == 0 else 0
  
  
  
  
  def 	__lowerCamelCase (  )      ->None:
  	assert not_gate(0       ) == 1
  	assert not_gate(1       ) == 0
  
  
  if __name__ == "__main__":
  			print(not_gate(0))
  			print(not_gate(1))
  
  
  
  