I need to make a small python script that meets the following requirements:
- Open a csv file;
- Exclude from reading the first line and the first column, because it contains information that will not be necessary in this computation itself;
- Select a random number x of "rows" or "cells" of the file, where x is a value expressed as a percentage of the total number of rows in the file that will be defined by the user;
- Delete the values of the selected rows or replace them with a value that can be excluded from a subsequent calculation, such as the character "x", "-", etc.
Any suggestions?