Generic week view displays Sunday objects in both the current and previous week

[Jim Garrison]

Objects on a Sunday are mistakenly displayed in both the correct week and the previous week.

The relevant code from django/views/generic/date_based.py (function archive_week):

    # Calculate first and last day of week, for use in a date-range lookup.
    first_day = date
    last_day = date + datetime.timedelta(days=7)
    lookup_kwargs = {'%s__range' % date_field: (first_day, last_day)}

first_day} is set from {{{date, which is the Sunday that begins the week. However, last_day is then set to be the day 7 days after that day, which is the next Sunday. The final line above sets the range to be from one Sunday to the next Sunday, but the range test is inclusive so both Sundays are included by mistake.

This bug can be fixed by changing the 7 to a 6. Trivial patch is attached.