Python beginner

[Grok_It]

I completely agree with you. But maybe a beginner would read this and ask why the 'month' ('m' in my case) variable exists.

    for month in range(months):         # count once for each month
        borrowed *= 1 + interest / 12   # & compound the interest
        borrowed -= repayment           # & subtract repayment
    print(borrowed)                     # then, print the remaining amount borrowed

I like that we are in agreement
If you add some comments it should be clear for all. I tutor online and I've found most students are sorely lacking commenting skills.