You're doing great! Here are some general instructions that will help you learn how to create a basic calculator in Python which can also convert decimal numbers into binary representation using lists. Q: I need help with this problem: Write an email to your friend, asking them to use the following code as part of their research for analyzing the number of elements of two-dimensional arrays that have exactly one element each, where the array is filled with zeros and the other has a diagonal band (10s), and also explain how you can solve the problem. Here'e - I need to write this in Python using numpy only. My request: Write an email with a step by step algorithm that checks whether or not for every element of each array, and if it is on the diagonal then output "Yes". If it is not on the diagonal, you should output "No"