input: Write a function to create a basic Python script that computes the sum of two variables and stores the result in a third variable.
  assert compute_sum_and_store(5, 8)==13
  assert compute_sum_and_store(10, 20)==30
  assert compute_sum_and_store(0, 0)==0
  assert compute_sum_and_store(7, -3)==4
  assert compute_sum_and_store(-5, -5)==-10
  assert compute_sum_and_store(-1, 1)==0
output: def compute_sum_and_store(a, b):
      result = a + b
      return result