title: how to transform YYMMDDHH timestamp in date python
body: <p>I have the following timestamps</p>
  
  <pre><code> import pandas as pd
          import pandas as pd
  df = pd.DataFrame({'ts':[14102100, 14102101, 14102102]})
  </code></pre>
  
  <p>And they are in format <code>YYMMDDHH</code>.</p>
  
  <p>How can I transform them into a readable date ?</p>
  
  <p>I tried <code>pd.to_datetime(df.ts, format="YYMMDDHH")</code> but it doesnt work</p>