title: Looking for a startswith equivalent for integers in panda
body: <p>I have an integer column. all rows have 9 digits, the first either starts with 5 or 7. i am trying to filter for ones that only start with 7. is there a .str.startswith equivalent for integer dtypes? or do i need to convert to string and back to integer?</p>
  
  <pre><code>df["Case #"].str.startswith(7)
  </code></pre>