Check code and guide m path

Question

list = [1.A,2.B,3.C]
list[0] = '1.B'
print(list)

This is no working. I want to save 1.a, 1.u types of data in list
I want to do this. Show a batter way

Answer 1

What kind of data is [1.A,2.B,3.C] and what does "I want to save 1.a, 1.u types of data" mean?