code: def parsestr(self, text, headersonly=False):
          
          return self.parse(StringIO(text), headersonly=headersonly)
docs: Create a message structure from a string.
  
          Returns the root of the message structure.  Optional headersonly is a
          flag specifying whether to stop parsing after reading the headers or
          not.  The default is False, meaning it parses the entire contents of
          the file.