Trying to get "X days, Y hours, and Z minutes" string with a timedelta. Also, try to use singular when the value is 1

countdown.py

def get_label(label,val):

  if val!=1:
        return label+"s"

    return label

diff = somedate -datetime.now()
hours, remainder = divmod(diff.seconds, 3600)

minutes, seconds = divmod(remainder, 60)

countdown = "{0.days} {1}, {2} {3}, & {4} {5}".format(
        diff, get_label("day",diff.days),
        hours, get_label("hour",hours),
        minutes, get_label("minute",minutes)
    )