Range content but not single pages [SOLVED]

Sorry if this is a silly question, but I’m lost.

Content folder

content
  companies
    company1.md
    company2.md
  posts
    post1.md
    post2.md
  about.md

Layout folder

_default
  section.html
  single.html
about
  single.html
index.html

In index.html, I’m using {{range .Data.Pages}}to loop through the companies and posts folders. But it’s also picking up the about.md file and giving an error. How do I exclude the about.md file from index.html? As I need to generate other single pages, is there a better way than just excluding each individual file? Thanks!

Whenever you ask for help involving an error message, include the error message.

Search for something like range exclude.

Use where and query for section (or type, which is in most cases the same).

Thanks for this. Solved my problem.