Numerical Analysis with Python

I don't really get the concept of this problem. Please explain and code in Python. Thanks!

Write a computer code to implement the Composite Trapezoidal Rule quadrature TO T1 to approximate the definite integral .b 1[f] = | f(r)dr, using the equally spaced points 10 = a, xi-ro + h,T2 = 10 + 2h, . . . ,xN 1, where (a) Test your code with f(x) 1/1+x) in [0, 2] by computing the error fl Thfl h = (b-a)/N. for h-2/20, 2/40, 2/80, and verify that Th has a convergent trend at the expected, quadratic rate