title: i want to enter the index of a list within data which is in string
body: <pre><code>category_list = ['cc18f344-7f94-4ce5-bfde-4031b21f2bf3', '632289ec-3c62-4133-be4d-5dab9112491b', '4ea7fd7e-ea95-4fb6-a62e-9835baa43a75', '8d6bea3d-3798-449d-930f-d56cf3f5d19f']
  
  data = '{&quot;language_code&quot;:&quot;en_PK&quot;,&quot;vendor_id&quot;:&quot;btqk&quot;,&quot;include_component_types&quot;:[&quot;multi_list&quot;],&quot;brand&quot;:&quot;foodpanda&quot;,&quot;country_code&quot;:&quot;pk&quot;,&quot;offset&quot;:0,&quot;category_id&quot;:**%[n]**}'
  </code></pre>
  <p>i want to enter the index of category list in the Bold  position, can anyone help me?</p>