Reading Values from Serial

I have a code made in python that is a simple UI to read 10 values and then send them to an arduino nano.

the code I currently have is designed to read all of the values input and then and then send them across to the arduino in the form below:

"a=1, b=2, c=3..."

what I'm struggling to figure out is how to receive this data on the other side. I would like the arduino code to read the string and then take out the values individually to be assigned to new integer values and then used for further calculation, so that for example it will read 1, 2, 3 etc and assign them to new defined terms.

Is there a way for me to do this or am I making things more complicated than they need to be and should be trying as different method?

thanks in advance!

Any help?

Below is a current discussion that seems to be similar to what you are trying to do.