title: What is the purpose of "_104" in round function in python?
body: <p>In round function what is the use of _100, _104, etc.
  I know that round(10.121, 1) will round the value up to 1 decimal place.
  But the purpose of _104 is not getting.</p>
  <p>I've attached two screenshots for reference.</p>
  <p><a href="https://i.stack.imgur.com/WhFC3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WhFC3.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/WpIE7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WpIE7.png" alt="enter image description here" /></a></p>