python类max()的实例源码

def test_can_issue_daily(self):
        """
        Tests can_issue_daily method
        Decides if the daily report surveys can be sent out or not
        """

        self.assertTrue(self.report.can_issue_daily())  # if daily report isn't issued, should be True
        self.report.survey_send_time = time.max
        self.assertFalse(self.report.can_issue_daily())  # if hour is later than current time, don't issue
        self.report.survey_send_time = time.min
        self.report.get_daily()  # create daily report
        self.assertFalse(self.report.can_issue_daily(),
                         "Assumed after daily report is created the daily report has already been sent")

def limit_remaining(self):
        limit = self.profile('limit_post')
        # If False is returned, no post limit is assumed.
        if limit == 0:
            return False
        today_min = timezone.datetime.combine(timezone.datetime.today(), time.min)
        today_max = timezone.datetime.combine(timezone.datetime.today(), time.max)
        # recent_posts =
        # Posts made by the user today + posts made by the IP today +
        # same thing except with comments
        recent_posts = Post.real.filter(Q(creator=self.id, created__range=(today_min, today_max)) | Q(creator__addr=self.addr, created__range=(today_min, today_max))).count() + Comment.real.filter(Q(creator=self.id, created__range=(today_min, today_max)) | Q(creator__addr=self.addr, created__range=(today_min, today_max))).count()

        # Posts remaining
        return int(limit) - recent_posts

def _daysplitinterval(starttime, endtime):
    """
    Splits an interval into a list of dates, start times and end times

    Parameters
    ----------
    starttime : datetime
        Start date/time of interval
    endtime : datetime
        End date/time of interval

    Returns
    -------
    intervals : list
        A list of lists. Each item in the sublists consists of the date,
        start time, and end time for the particular date.
    """
    assert starttime < endtime, 'Start datetime must be before end datetime'
    out = []
    starttime_orig = starttime
    while starttime.date() <= endtime.date():
        if starttime.date() == starttime_orig.date():
            stime = starttime.time()
        else:
            stime = time.min
        if starttime.date() == endtime.date():
            etime = endtime.time()
        else:
            etime = time.max

        out.append([starttime.date(), stime, etime])
        starttime += timedelta(days=1)
    return out

def _load(probe, starttime, endtime, instrument, product_id, cdfkeys):
    daylist = helper._daysplitinterval(starttime, endtime)
    data = []
    for day in daylist:
        date = day[0]
        year = str(date.year)
        month = str(date.month).zfill(2)
        day = str(date.day).zfill(2)

        local_dir = os.path.join(cluster_dir,
                                 'c' + probe,
                                 instrument,
                                 year)

        local_fname = 'C' + probe + '_' + product_id + '__' +\
            year + month + day + '.cdf'
        # If we don't have local file download it
        if not os.path.exists(os.path.join(local_dir, local_fname)):
            thisstart = datetime.combine(date, time.min)
            thisend = datetime.combine(date, time.max)
            try:
                _download(probe, thisstart, thisend, instrument, product_id)
            except Exception as err:
                print(str(err), '\n')
                continue

        from pycdf import pycdf
        cdf = pycdf.CDF(os.path.join(local_dir, local_fname))
        for key, value in cdfkeys.items():
            if value == 'Time':
                index_key = key
                break
        data.append(helper.cdf2df(cdf, index_key, cdfkeys))
    if len(data) == 0:
        raise RuntimeError('No data available to download during requested '
                           'times')
    return helper.timefilter(data, starttime, endtime)

def get_govuk_capture_time(self, govuk_payment):
        try:
            capture_submit_time = parse_datetime(
                govuk_payment['settlement_summary'].get('capture_submit_time', '')
            )
            captured_date = parse_date(
                govuk_payment['settlement_summary'].get('captured_date', '')
            )
            if captured_date is not None:
                capture_submit_time = (
                    capture_submit_time or timezone.now()
                ).astimezone(timezone.utc)
                if capture_submit_time.date() < captured_date:
                    return datetime.combine(
                        captured_date, time.min
                    ).replace(tzinfo=timezone.utc)
                elif capture_submit_time.date() > captured_date:
                    return datetime.combine(
                        captured_date, time.max
                    ).replace(tzinfo=timezone.utc)
                else:
                    return capture_submit_time
        except (KeyError, TypeError):
            pass
        raise GovUkPaymentStatusException(
            'Capture date not yet available for payment %s' % govuk_payment['reference']
        )

def get_queryset(self):
        """returns actions"""
        start_date = self.request.GET.get('start')
        end_date = self.request.GET.get('end')

        if not start_date or not end_date:
            raise ParseError("Period frame missing")

        queryset = self.model.objects.all()
        queryset = self._apply_in_action_type_lookup(queryset)
        queryset = self._apply_in_charge_lookup(queryset)

        try:
            start_date = self._parse_date(start_date)
            end_date = self._parse_date(end_date)
        except ValueError:
            raise ParseError("Invalid period frame")

        start_datetime = datetime.combine(start_date, time.min)
        end_datetime = datetime.combine(end_date, time.max)

        if end_datetime < start_datetime:
            return self.model.objects.none()

        queryset = queryset.filter(
            Q(planned_date__lte=start_datetime, end_datetime__gte=end_datetime) |  # starts before, ends after period
            Q(planned_date__gte=start_datetime, end_datetime__lte=end_datetime) |  # starts and ends during period
            Q(planned_date__lte=start_datetime, end_datetime__gte=start_datetime) |  # starts before, ends during
            Q(planned_date__lte=end_datetime, end_datetime__gte=end_datetime) |  # starts during period, ends after
            Q(
                planned_date__gte=start_datetime,
                end_datetime__isnull=True,
                planned_date__lte=end_datetime
            )  # no end, starts during period
        )
        return queryset

def _get_datetimes(self):
        """return selected date times"""
        start_date, end_date = get_date_bounds(self.value)
        return datetime.combine(start_date, time.min), datetime.combine(end_date, time.max)

def queryset(self, request, queryset):
        daystart = timezone.make_aware(datetime.combine(timezone.localdate(), time.min))
        dayend = timezone.make_aware(datetime.combine(timezone.localdate(), time.max))


        # using daystart and dayend because I can't directly filter using start_date.day
        if self.value() == 'today':
            return queryset.filter(start_date__gte=daystart,
                                    start_date__lte=dayend)

        if self.value() == 'tomorrow':
            daystart += timedelta(days=1)
            dayend += timedelta(days=1)
            return queryset.filter(start_date__gte=daystart,
                                    start_date__lte=dayend)

        if self.value() == 'week':
            dayend += timedelta(days=7)
            return queryset.filter(start_date__gte=daystart,
                                    start_date__lte=dayend)

        if self.value() == 'month':
            dayend += timedelta(days=30)
            return queryset.filter(start_date__gte=daystart,
                                    start_date__lte=dayend)

        if self.value() == 'last_week':
            daystart -= timedelta(days=7)
            return queryset.filter(start_date__gte=daystart,
                                    start_date__lte=dayend)

        # no else to allow fall through to return all

def end_time(self, time_part=time.max):
        return datetime.combine(self.end_date, time_part).replace(tzinfo=timezone.utc)