title: Convert a pandas dataframe to dictionary with one column as key and other column as multiple values
body: <p>I want to convert this dataframe into a dictionary where for one single label as key, I store multiple tweets as value. Can someone help?</p>
  <p><a href="https://i.stack.imgur.com/tDziu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tDziu.png" alt="enter image description here" /></a></p>