text: from configargparse import ArgumentError
  
  from gray.formatters import FORMATTERS
  
  
  def parse_formatters(v):
      formatters = v.split(",")
  
      for formatter_name in formatters:
          if formatter_name not in FORMATTERS:
              raise ArgumentError(f"Uknown formatter {formatter_name}")
  
      return formatters
  
  
  def parse_bool(v):
      if isinstance(v, bool):
         return v
  
      if v.lower() in ("yes", "true", "t", "y", "1"):
          return True
      elif v.lower() in ("no", "false", "f", "n", "0"):
          return False
  
      raise ArgumentError("Boolean value expected.")
  