title: how to insert item from one list to other at position which doesnot contains alphanumeric
body: <p>these are my lists</p>
  
  <pre><code>i=["a","b"]
  j=["abc","(3)","ab &amp; ac", "(1,4)","xyz"]
  </code></pre>
  
  <p>and I want my output be like this </p>
  
  <pre><code>j=["abc","a","ab &amp; ac","b","xyz"]
  </code></pre>
  
  <p>and i tried like this,</p>
  
  <pre><code>val=0
  for item in j:
      if item.isalpha():
          pass
      else:
          elem=i[val]
          j.replace(item, elem)
          val=val+1
  </code></pre>
  
  <p>How to insert item from one list to other at position which does not contains alphanumeric?</p>