title: Python Google docstring format: more than one type for argument?
body: <p>I am using Google-style python docstring format.
  There's one function, and the input parameter could be dict, list, or string.
  What is the format of multiple data type in docstring?</p>
  
  <p>Like</p>
  
  <pre><code>Args:
      input (str, list, dict): input of this function
  </code></pre>