title: Convert a string that includes both characters and integers to a list in Python
body: <p>I know how to convert for instance:</p>
  <pre><code>'1-2=3^4/5' -&gt; [1, '-', 2, '=', 3, '^', 4, '/', 5]
  </code></pre>
  <p>but if let's say I want to convert:</p>
  <pre><code>'12-34=56^78/90' -&gt; [12, '-', 34, '=', 56, '^', 78, '/', 90]
  </code></pre>
  <p>Then I have issues.</p>
  <p>I tried several things and it never worked perfectly - it either had an edge case where it was not working or there were issues. For instance, one of the problem I had was that the digits after the 1st one of an int was repeated as new elements.</p>
  <p>I would greatly appreciate if anyone can take some time to help me.</p>
  <p>Thx in advance!</p>
  <p>EDIT: Thx to everyone for your quick answers! However, I am kinda new to programming and hence not familiar w/ the modules or methods used.
  Would it be possible to do it using only built-in functions?</p>