How to declare more than one additional url index in pip.conf

Question

Where can I install this in pip.conf?

I want to add two (2) additional urls indexes to pip.conf, but I have not found a solution how to do this after some research in the docs.

Answer 1

Although the sample docs are for --find-links, he says:

Adding parameters, such as --find-links, can be written on several lines:

[global]
find-links =
    http://download.example.com

[install]
find-links =
    http://mirror1.example.com
    http://mirror2.example.com

, extra-index-url. , , , , , .

edit: , extra-index-url.