title: Python Split a string by diffrent . full stops
body: <p>hey i want to be able to change my string being split at say the third full stop or the 2nd  here is my code</p>
  
  <pre><code>file = "hey there. this is some demo code. will you nice people please help me."
  </code></pre>
  
  <p>i want to split the string <strong>after</strong> the 2nd full stop so it will look like</p>
  
  <pre><code>"hey there. this is some demo code."
  </code></pre>