Write a method opponent checker(self) that returns a one-character string representing the checker of the player object’s opponent. the method may assume that the calling player object has a checker attribute that is either 'x' or 'o'.

Part a: data processing given a data file, find the max, min, and average values of columns. also, create an addition column that is based on the other columns. there will be no error checking required for this lab. you are provided with a data file named (surprise! ) data.txt. data is arranged in columns where each item of data is twelve columns wide (so it is easy to extract data items using slicing): name height(m) weight(kg) joe 1.82 72.57 mary 1.60 63.50 dion 1.90 90.71 kayla 1.72 66.31 jose 1.78 70.23 sofia 1.63 65.12 erik 1.98 92.21 sara 1.57 65.77 your task is read the file data.txt and calculate the max, min, and average of the height and weight columns and to add an additional column that has the bmi calculated based on each height and weight. your output will look like this (and needs to be formatted like this). to match the testing on mimir here is the format string: "{: < 12s}{: < 12.2f}{: < 12.2f}{: < 12.2f}"