一段曾经处理datetime的代码

前记：主要是数据库存储记录时一个属性是以"2019-01"这样的年月进行存储的，当需要根据A年月到B年月取出相关记录时，filter()直接range()是不行的，不是数值区间或者日期区间，这时需要字符串转日期转字符串，同时字符串"2019-1"要转为"2019-01"

工资汇总--展示

def total_salary(request):  # 工资汇总,传入'2019-01 - 2019-02'
    form = forms.total_salary(request.GET)
    if form.is_valid():
        # year_start = form.cleaned_data["yymm_range"].split(" ")[0].split("-")[0]
        # month_start = form.cleaned_data["yymm_range"].split(" ")[0].split("-")[1]
        # yymm_start = str(year_start) + '-' + str(month_start)
        # year_final = form.cleaned_data["yymm_range"].split(" ")[2].split("-")[0]
        # month_final = form.cleaned_data["yymm_range"].split(" ")[2].split("-")[1]
        # yymm_final = str(year_final) + '-' + str(month_final)
        # start = datetime.datetime(int(year_start), int(month_start), 1)  # 格式化日期时间,但是give_time不是格式化为datetime的数据,只是类似“2019-01”
        # final = datetime.datetime(int(year_final), int(month_final), 1)
        start = form.cleaned_data['yymm_range'].split(" ")[0]
        final = form.cleaned_data['yymm_range'].split(" ")[2]
        start_datetime = datetime.datetime.strptime(start, '%Y-%m')
        final_datetime = datetime.datetime.strptime(final, '%Y-%m')
        ret_list = libs.get_month_range(start_datetime, final_datetime)    # 用datetime化了的起末时间取出中间年月并格式化为字符串的列表
        my_list = list()  # ['2019-1','2019-2']没有0啊，而数据库存的时候give_time的2019年1月是以'2019-01'形式存储。
        for i in ret_list:
            if len(i) == 6:
                my_list.append(i.split('-')[0] + '-0' + i.split('-')[1])
            else:
                my_list.append(i)
        range_salary = models.Salary.objects.filter(give_time__in=my_list)  # 提取出日期范围内的薪水记录
        # range_salary = models.Salary.objects.filter(Q(give_time__contains=start)|Q(give_time__contains=final))  # 同上
        # 对于give_time，目前初定为2019-01形式，具体到日这里则需要模糊查询
        # staff_start_1 = staff_fina_l = sb1 = zfgjj1 = gh1 = kq1 = sd1 = gs1 = yf1 = sf1 = 0  # 声明常量,可以get不到取0
        range_salary1 = range_salary.filter(staff__department__in=[1, 4])
        staff1 = models.Salary.objects.filter(staff__department__in=[1, 4])
        staff_start_1 = staff1.filter(give_time=start).values("staff").distinct().count()
        staff_fina_l = staff1.filter(give_time=final).values("staff").distinct().count()
        # yf1 = range_salary1.filter(item__type=1).values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # sb1 = range_salary1.filter(item__name=u"社保").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # zfgjj1 = range_salary1.filter(item__name=u"住房公积金").values("give_time").annotate(yfsum=Sum(u'money'))[0][
        #     'yfsum']
        # kq1 = range_salary1.filter(item__name=u"考勤").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # sd1 = range_salary1.filter(item__name=u"水电").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # gh1 = range_salary1.filter(item__name=u"工会").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # gs1 = range_salary1.filter(item__name=u"税").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        yf1 = range_salary1.filter(item__type=1).aggregate(yf=Sum('money'))['yf']
        if not yf1:
            yf1 = 0
        sb1 = range_salary1.filter(item__name='社保').aggregate(sb=Sum('money'))['sb']
        if not sb1:
            sb1 = 0
        zfgjj1 = range_salary1.filter(item__name="住房公积金").aggregate(zf=Sum('money'))['zf']
        if not zfgjj1:
            zfgjj1 = 0
        kq1 = range_salary1.filter(item__name='考勤').aggregate(yf=Sum('money'))['yf']
        if not kq1:
            kq1 = 0
        sd1 = range_salary1.filter(item__name='水电').aggregate(sd=Sum('money'))['sd']
        if not sd1:
            sd1 = 0
        gh1 = range_salary1.filter(item__name='工会').aggregate(gh=Sum('money'))['gh']
        if not gh1:
            gh1 = 0
        gs1 = range_salary1.filter(item__name='税').aggregate(gs=Sum('money'))['gs']
        if not gs1:
            gs1 = 0
        sf1 = yf1 - sb1 - zfgjj1 - kq1 - sd1 - gh1 - gs1
        # staff_start_2 = staff_fina_2 = sb2 = zfgjj2 = gh2 = kq2 = sd2 = gs2 = yf2 = sf2 = 0

        range_salary2 = range_salary.filter(staff__department__in=[2, 3])
        staff2 = models.Salary.objects.filter(staff__department__in=[2, 3])
        # staff_start_2 = staff2.filter(give_time=start).values("staff").distinct().count()
        # staff_fina_2 = staff2.filter(give_time=final).values("staff").distinct().count()
        # yf2 = range_salary2.filter(item__type=1).values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # sb2 = range_salary2.filter(item__name=u"社保").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # zfgjj2 = range_salary2.filter(item__name=u"住房公积金").values("give_time").annotate(yfsum=Sum(u'money'))[0][
        #     'yfsum']
        # kq2 = range_salary2.filter(item__name=u"考勤").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # sd2 = range_salary2.filter(item__name=u"水电").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # gh2 = range_salary2.filter(item__name=u"工会").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        # gs2 = range_salary2.filter(item__name=u"税").values("give_time").annotate(yfsum=Sum(u'money'))[0]['yfsum']
        staff_start_2 = staff2.filter(give_time=start).values("staff").distinct().count()
        if not staff_start_2:
            staff_start_2 = 0
        staff_fina_2 = staff2.filter(give_time=final).values("staff").distinct().count()
        if not staff_fina_2:
            staff_fina_2 = 0
        yf2 = range_salary2.filter(item__type=1).aggregate(yfsum=Sum('money'))['yfsum']
        if not yf2:
            yf2 = 0
        sb2 = range_salary2.filter(item__name="社保").aggregate(sb=Sum('money'))['sb']
        if not sb2:
            sb2 = 0
        zfgjj2 = range_salary2.filter(item__name=u"住房公积金").aggregate(zf=Sum(u'money'))['zf']
        if not zfgjj2:
            zfgjj2 = 0
        kq2 = range_salary2.filter(item__name="考勤").aggregate(kq=Sum('money'))['kq']
        if not kq2:
            kq2 = 0
        sd2 = range_salary2.filter(item__name="水电").aggregate(sd=Sum('money'))['sd']
        if not sd2:
            sd2 = 0
        gh2 = range_salary2.filter(item__name="工会").aggregate(gh=Sum('money'))['gh']
        if not gh2:
            gh2 = 0
        gs2 = range_salary2.filter(item__name="税").aggregate(gs=Sum('money'))['gs']
        if not gs2:
            gs2 = 0
        sf2 = yf2 - sb2 - zfgjj2 - kq2 - sd2 - gh2 - gs2
        # 后勤人员工资
        dict_administration = dict()
        dict_administration["row"] = 1
        dict_administration["项目"] = u"后勤工资"
        dict_administration["开始人数"] = staff_start_1
        dict_administration["最终人数"] = staff_fina_l
        dict_administration["应发金额"] = yf1
        dict_administration["代扣社保"] = sb1
        dict_administration["代扣住房公积金"] = zfgjj1
        dict_administration["工会"] = gh1
        dict_administration["考勤"] = kq1
        dict_administration["水电"] = sd1
        dict_administration["个税"] = gs1
        dict_administration["实发金额"] = sf1

        # 教师工资
        dict_teacher = dict()
        dict_teacher["row"] = 2
        dict_teacher["项目"] = u'教师工资'
        dict_teacher["开始人数"] = staff_start_2
        dict_teacher["最终人数"] = staff_fina_2
        dict_teacher["应发金额"] = yf2
        dict_teacher["代扣社保"] = sb2
        dict_teacher["代扣住房公积金"] = zfgjj2
        dict_teacher["工会"] = gh2
        dict_teacher["考勤"] = kq2
        dict_teacher["水电"] = sd2
        dict_teacher["个税"] = gs2
        dict_teacher["实发金额"] = sf2

        # 总工资
        dict_all = dict()
        dict_all["row"] = 3
        dict_all["项目"] = u'总工资'
        dict_all["开始人数"] = staff_start_1 + staff_start_2
        dict_all["最终人数"] = staff_fina_l + staff_fina_2
        dict_all["应发金额"] = yf1 + yf2
        dict_all["代扣社保"] = sb1 + sb2
        dict_all["代扣住房公积金"] = zfgjj1 + zfgjj2
        dict_all["工会"] = gh1 + gh2
        dict_all["工会"] = gh1 + gh2
        dict_all["考勤"] = kq1 + kq2
        dict_all["水电"] = sd1 + sd2
        dict_all["个税"] = gs1 + gs2
        dict_all["实发金额"] = sf1 + sf2
        json_dict = dict()
        json_list = list()
        json_list.append(dict_administration)
        json_list.append(dict_teacher)
        json_list.append(dict_all)
        json_dict["code"] = "ok"
        json_dict["msg"] = "查询汇总成功"
        json_dict["data"] = json_list
        return HttpResponse(json.dumps(json_dict), content_type='application/json')
    else:
        # logger.info(u'提交数据错误')
        e = ','.join([form.errors[i][0] for i in form.errors]) if len(form.errors) > 0 else u'未知错误'
        return HttpResponseBadRequest(json.dumps({'code': 'false', 'msg': e, 'data': []}),
                                      content_type='application/json')

def get_month_range(start_day, end_day):    # 取时间段内所有年月，时间模块的各种用法
    months = (end_day.year - start_day.year) * 12 + end_day.month - start_day.month
    month_range = ['%s-%s' % (start_day.year + mon // 12, mon % 12 + 1)
                   for mon in range(start_day.month - 1, start_day.month + months)]
    return month_range