Setting LED groups in python

So I am back on a learning curve with python again. So far I haven’t seen a clear way to do with via any of the examples provided.

Lets say I have 12 leds on a channel but I want to separate 1 - 7 from 8 - 12 and have the last 4 do something different from the rest on the same channel?

Example: 1 - 7 Stay Red
8 - 12 Blink Blue

I see how to set the count and make the entirestrip do something but haven’t figured out how to chop it up into chunks

Take a look at this post how to set a bunch of LEDs:

I guess for now I’ll just write it all out frame by frame. Though I did make some progress today