code: def _screaming_snake_case(cls, text):
          
          if text.isupper():
              return text
          result = ''
          for pos, symbol in enumerate(text):
              if symbol.isupper() and pos > 0:
                  result += '_' + symbol
              else:
                  result += symbol.upper()
          return result
docs: Transform text to SCREAMING_SNAKE_CASE
  
          :param text:
          :return: