code: def epubcheck_help():
      
  
      # tc = locale.getdefaultlocale()[1]
  
      with open(os.devnull, "w") as devnull:
          p = subprocess.Popen(
              [c.JAVA, '-Duser.language=en', '-jar', c.EPUBCHECK, '-h'],
              stdout=subprocess.PIPE,
              stderr=devnull,
          )
          result = p.communicate()[0]
  
      return result.decode()
docs: Return epubcheck.jar commandline help text.
  
      :return unicode: helptext from epubcheck.jar