code: def _execute_wk(*args, input=None):
      
      wk_args = (WK_PATH,) + args
      return subprocess.run(wk_args, input=input, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
docs: Generate path for the wkhtmltopdf binary and execute command.
  
      :param args: args to pass straight to subprocess.Popen
      :return: stdout, stderr