Update 2-writing-files.md; Handling data in a CSV format

[goatdjar]

Handling data in a CSV format. https://programming-26.mooc.fi/part-6/2-writing-files#handling-data-in-a-csv-format

The output is wrong. Change from "Emily;41;5" to "Emily;34;3"

Printed values inside save_results function:

Peter
[4, 2, 3, 5, 4, 0, 0]
Paula
[7, 2, 8, 3, 5, 4, 5]
Susan
[3, 4, 3, 5, 3, 4, 4]
Emily
[6, 6, 5, 5, 0, 4, 8] -> 34

Tested with the following:

def grade(points):
    if points < 20:
        return 0
    elif points < 25:
        return 1
    elif points < 30:
        return 2
    elif points < 35:
        return 3
    elif points < 40:
        return 4
    else:
        return 5

def grade(points):
    return sum(points >= t for t in [20, 25, 30, 35, 40])

def grade(points):
    return bisect.bisect([20, 25, 30, 35, 40], points)

def grade(points):
    return min(5, max(0, (points - 15) // 5))

The Output:

─────┼────────────────────────────
     │ File: results.csv
─────┼────────────────────────────
   1 │ Peter;18;0
   2 │ Paula;34;3
   3 │ Susan;26;2
   4 │ Emily;34;3