No module named 'serial'?

Hi Guys,

While trying to write appdaemon python app and import serial i got this error ImportError: No module named 'serial'
Sorry for the noob question. But do I actually need to install pip then pip install pyserial?
I thought it should already be there!
Thank you!

Sorted. For benefits of the noobs like me out there. I did have to install pyserial. I used:

sudo pip3 install pyserial

not pip install pyserial