Please it must be done and comment it in python launguage . Thank you

You are given an sorted array of integers. Every element appears twice except for one element. Your task is to write a function to find that one element appearing only once in the array. Do not use numpy, pandas, dictionary for this question. 7. Optional Requirement Try to write the code for this question with minimal number of lines i.e. not more than 3-4 lines Example 1: Input: [1,1,2,3,3,4,4,8,8] Output:2 Example 2: Input: [3,3,7,7,10,11,11) Output: 10