code: def format_h1(s, format="text", indents=0):
      
  
      _CHAR = "="
      if format.startswith("text"):
          return format_underline(s, _CHAR, indents)
      elif format.startswith("markdown"):
          return ["# {}".format(s)]
      elif format.startswith("rest"):
          return format_underline(s, _CHAR, 0)
docs: Encloses string in format text
  
      Args:
          s: string
          format: string starting with "text", "markdown", or "rest"
          indents: number of leading intenting spaces
  
      Returns: list
  
      >>> print("\\n".join(format_h2("Header 1", indents=10)))
                Header 1
                --------
  
      >>> print("\\n".join(format_h2("Header 1", "markdown", 0)))
      ## Header 1