how can i calculate similarity of to chart in python?

Question

I have tow graph like this:

first graph:

x=[1,2,3,6,5,2,3,1,4,5,1,2,3,6,5,2,1,4,5,3]
y=[5,1,4,2,3,6,5,2,1,4,7,8,7,8,7,9,5,6,9,8]

secon