Overwrite element in list

I'm creating a function that returns the time. I wanted it to display am/pm instead of having a max of 24h. So I needed to first substract 6 on the hour if it is above 12. But nothing is happening, I'm not even getting an error and I have no idea what is the cause for this. Cn someone explain what is the cause?

import datetime    MONTHS = 'jan feb mar apr may jun jul aug sep oct nov dec'.upper().split(' ')  def get_date():      # 01-OCT-1978 04:31:17            date = datetime.datetime.today().__str__().split(' ')      date[0] = date[0].split('-')            if int(date[1].split(':')[0]) > 12:          date[1].split(':')[0] = str(int(date[1].split(':')[0]) - 12)                real_date = date[0][2] + '-' + MONTHS[int(date[0][1])] + '-' + date[0][0] + ' ' + date[1].split('.')[0]                        return real_date    print(get_date())  # 07-APR-2021 21:56:12  

https://stackoverflow.com/questions/66523746/overwrite-element-in-list March 08, 2021 at 10:50AM