code: def lines(self: object, fileids: str, plaintext: bool = True):
          
  
          for text in self.texts(fileids, plaintext):
              text = re.sub(r'\n\s*\n', '\n', text, re.MULTILINE) # Remove blank lines
              for line in text.split('\n'):
                  yield line
docs: Tokenizes documents in the corpus by line