Looping through an array with a given condition in python 3?

Question

Python

There is an array (test.csv) where numbers with a semicolon are stored. It is necessary to sort through all of them, dividing them into two columns. The condition is as follows: if number 2 >= number 1 by 5% in the first column, if number 2 <= number 1 by 5% in the second column. If the conditions are not met, the number does not fall into the columns. If the number 2 fulfills one of the conditions, then the number 3 is already compared with the number 2. And so on until the end of the list. Help me to understand

Answer 1

What exactly is the problem?
You read the file, go through the lines, see if the number fulfills your conditions.
Profit.