from django.shortcuts import renderfrom django.contrib.auth.decorators import login_requiredfrom django.utils import timezonefrom django.db.models import Sum, Count, Max, When, Case, Value, IntegerFieldfrom django.db.models.functions import TruncDay, TruncMonth, TruncYearimport datetimefrom .models import Profile, Team@login_requireddef profile(request):    today = timezone.now()    user_profile = Profile.objects.filter(user=request.user).first()    expenses = user_profile.expense_set.annotate(        field = Case(            When(created__year=today.year, then=1),            When(created__month=today.month, then=2),            When(created__day=today.day, then=3),            default=0,            output_field=IntegerField()        )    )    curent_month_expenses = expenses.filter(created__month=today.month)    expenses_per_day = expenses.annotate(        day=TruncDay('created')).values('day').annotate(            expenses=Count('id'), summary=Sum('amount')        ).values('day', 'expenses', 'summary')    expenses_per_month = expenses.annotate(        month=TruncMonth('created')).values('month').annotate(            expenses=Count('id'), summary=Sum('amount')        ).values('month', 'expenses', 'summary')    expenses_per_year = expenses.annotate(        year=TruncYear('created')).values('year').annotate(            expenses=Count('id'), summary=Sum('amount')        ).values('year', 'expenses', 'summary')    print(expenses_per_year[0])    print(expenses_per_year.first())    context = {        'profile': user_profile,        'curent_month_expenses': curent_month_expenses,        'yearly_expenses': expenses_per_year,        'dayly_expenses': expenses_per_day,        'monthly_expenses': expenses_per_month,    }    return render(request, 'accounts/profile.html', context)為什么打印語句中的輸出不同？輸出：