title: what are all the dtypes that pandas recognizes?
body: <p>For pandas, would anyone know, if any datatype apart from</p>
  
  <p>(i) <code>float64</code>, <code>int64</code>  (and other variants of <code>np.number</code> like <code>float32</code>, <code>int8</code> etc.)</p>
  
  <p>(ii)  <code>bool</code></p>
  
  <p>(iii) <code>datetime64</code>, <code>timedelta64</code></p>
  
  <p>such as string columns, always have a <code>dtype</code> of <code>object</code> ? </p>
  
  <p>Alternatively, I want to know, if there are any datatype apart from (i), (ii) and (iii) in the list above that <code>pandas</code> does not make it's <code>dtype</code> an <code>object</code>?</p>