Python datetime.now() Examples

def observe_inventory(owner, repo_name, pulls):
    for metric in ['additions', 'commits', 'deletions']:
        metric_sum = None
        if len(pulls) > 0:
            metric_sum = sum([getattr(p, metric) for p in pulls])
        else:
            metric_sum = 0

        logger.info(
            'Observed for owner "%s", repo "%s", %d %s' % (owner, repo_name, metric_sum, metric))

        CODE_INVENTORY.labels(owner, repo_name, metric).set(metric_sum)

    for pull in pulls:
        days_old = weekdays_between(pull.created_at, datetime.now())
        logger.info(
            'Observed for owner "%s", repo "%s", %.2f days old PR' % (owner, repo_name, days_old))
        CODE_INVENTORY_AGE.labels(owner, repo_name).observe(days_old) 

def test_astimezone(self):
        # Pretty boring!  The TZ test is more interesting here.  astimezone()
        # simply can't be applied to a naive object.
        dt = self.theclass.now()
        f = FixedOffset(44, "")
        self.assertRaises(TypeError, dt.astimezone) # not enough args
        self.assertRaises(TypeError, dt.astimezone, f, f) # too many args
        self.assertRaises(TypeError, dt.astimezone, dt) # arg wrong type
        self.assertRaises(ValueError, dt.astimezone, f) # naive
        self.assertRaises(ValueError, dt.astimezone, tz=f)  # naive

        class Bogus(tzinfo):
            def utcoffset(self, dt): return None
            def dst(self, dt): return timedelta(0)
        bog = Bogus()
        self.assertRaises(ValueError, dt.astimezone, bog)   # naive

        class AlsoBogus(tzinfo):
            def utcoffset(self, dt): return timedelta(0)
            def dst(self, dt): return None
        alsobog = AlsoBogus()
        self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive 

def latest_post_date(self):
        """
        Return the latest item's pubdate or updateddate. If no items
        have either of these attributes this return the current UTC date/time.
        """
        latest_date = None
        date_keys = ('updateddate', 'pubdate')

        for item in self.items:
            for date_key in date_keys:
                item_date = item.get(date_key)
                if item_date:
                    if latest_date is None or item_date > latest_date:
                        latest_date = item_date

        # datetime.now(tz=utc) is slower, as documented in django.utils.timezone.now
        return latest_date or datetime.datetime.utcnow().replace(tzinfo=utc) 

def test_load_dates_timezones():
    from dataflows import Flow, checkpoint
    from datetime import datetime, timezone
    import shutil

    dates = [
        datetime.now(),
        datetime.now(timezone.utc).astimezone()
    ]

    shutil.rmtree('.checkpoints/test_load_dates_timezones', ignore_errors=True)

    Flow(
        [{'date': d.date(), 'datetime': d} for d in dates],
        checkpoint('test_load_dates_timezones')
    ).process()

    results = Flow(
        checkpoint('test_load_dates_timezones')
    ).results()

    assert list(map(lambda x: x['date'], results[0][0])) == \
        list(map(lambda x: x.date(), dates))
    assert list(map(lambda x: x['datetime'], results[0][0])) == \
        list(map(lambda x: x, dates)) 

def test_class_just_fixture(testdir):
    testdir.makepyfile("""
        from datetime import datetime
        import time

        class TestAsClass(object):

            def test_just_fixture(self, freezer):
                now = datetime.now()
                time.sleep(0.1)
                later = datetime.now()

                assert now == later
    """)

    result = testdir.runpytest('-v', '-s')
    assert result.ret == 0 

def test_astimezone(self):
        # Pretty boring!  The TZ test is more interesting here.  astimezone()
        # simply can't be applied to a naive object.
        dt = self.theclass.now()
        f = FixedOffset(44, "")
        self.assertRaises(TypeError, dt.astimezone) # not enough args
        self.assertRaises(TypeError, dt.astimezone, f, f) # too many args
        self.assertRaises(TypeError, dt.astimezone, dt) # arg wrong type
        self.assertRaises(ValueError, dt.astimezone, f) # naive
        self.assertRaises(ValueError, dt.astimezone, tz=f)  # naive

        class Bogus(tzinfo):
            def utcoffset(self, dt): return None
            def dst(self, dt): return timedelta(0)
        bog = Bogus()
        self.assertRaises(ValueError, dt.astimezone, bog)   # naive

        class AlsoBogus(tzinfo):
            def utcoffset(self, dt): return timedelta(0)
            def dst(self, dt): return None
        alsobog = AlsoBogus()
        self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive 

def test_freezing_time_in_fixture(testdir):
    testdir.makepyfile("""
        import pytest
        from datetime import date, datetime

        @pytest.fixture
        def today():
            return datetime.now().date()

        @pytest.mark.freeze_time('2017-05-20 15:42')
        def test_sth(today):
            assert today == date(2017, 5, 20)
    """)

    result = testdir.runpytest('-v', '-s')
    assert result.ret == 0 

def test_normal(self):
        fo = FixedOffset(3, "Three")
        self.assertIsInstance(fo, tzinfo)
        for dt in datetime.now(), None:
            self.assertEqual(fo.utcoffset(dt), timedelta(minutes=3))
            self.assertEqual(fo.tzname(dt), "Three")
            self.assertEqual(fo.dst(dt), timedelta(minutes=42)) 

def test_subclass_must_override(self):
        class NotEnough(tzinfo):
            def __init__(self, offset, name):
                self.__offset = offset
                self.__name = name
        self.assertTrue(issubclass(NotEnough, tzinfo))
        ne = NotEnough(3, "NotByALongShot")
        self.assertIsInstance(ne, tzinfo)

        dt = datetime.now()
        self.assertRaises(NotImplementedError, ne.tzname, dt)
        self.assertRaises(NotImplementedError, ne.utcoffset, dt)
        self.assertRaises(NotImplementedError, ne.dst, dt) 

def test_roundtrip(self):
        for dt in (self.theclass(1, 2, 3, 4, 5, 6, 7),
                   self.theclass.now()):
            # Verify dt -> string -> datetime identity.
            s = repr(dt)
            self.assertTrue(s.startswith('datetime.'))
            s = s[9:]
            dt2 = eval(s)
            self.assertEqual(dt, dt2)

            # Verify identity via reconstructing from pieces.
            dt2 = self.theclass(dt.year, dt.month, dt.day,
                                dt.hour, dt.minute, dt.second,
                                dt.microsecond)
            self.assertEqual(dt, dt2) 

def trade_off():
    """检查现在是否为非交易时间"""
    now = datetime.now()
    a = datetime.now().replace(hour=2, minute=35, second=0, microsecond=0)
    b = datetime.now().replace(hour=8, minute=55, second=0, microsecond=0)
    c = datetime.now().replace(hour=15, minute=30, second=0, microsecond=0)
    d = datetime.now().replace(hour=20, minute=55, second=0, microsecond=0)
    weekend = (now.isoweekday() == 6 and now >= a) or (now.isoweekday() == 7) or(now.isoweekday() == 1 and now <= a)
    off = (a<= now <= b) or (c <= now <= d) or weekend
    return off 

def test_more_astimezone(self):
        # The inherited test_astimezone covered some trivial and error cases.
        fnone = FixedOffset(None, "None")
        f44m = FixedOffset(44, "44")
        fm5h = FixedOffset(-timedelta(hours=5), "m300")

        dt = self.theclass.now(tz=f44m)
        self.assertTrue(dt.tzinfo is f44m)
        # Replacing with degenerate tzinfo raises an exception.
        self.assertRaises(ValueError, dt.astimezone, fnone)
        # Ditto with None tz.
        self.assertRaises(TypeError, dt.astimezone, None)
        # Replacing with same tzinfo makes no change.
        x = dt.astimezone(dt.tzinfo)
        self.assertTrue(x.tzinfo is f44m)
        self.assertEqual(x.date(), dt.date())
        self.assertEqual(x.time(), dt.time())

        # Replacing with different tzinfo does adjust.
        got = dt.astimezone(fm5h)
        self.assertTrue(got.tzinfo is fm5h)
        self.assertEqual(got.utcoffset(), timedelta(hours=-5))
        expected = dt - dt.utcoffset()  # in effect, convert to UTC
        expected += fm5h.utcoffset(dt)  # and from there to local time
        expected = expected.replace(tzinfo=fm5h) # and attach new tzinfo
        self.assertEqual(got.date(), expected.date())
        self.assertEqual(got.time(), expected.time())
        self.assertEqual(got.timetz(), expected.timetz())
        self.assertTrue(got.tzinfo is expected.tzinfo)
        self.assertEqual(got, expected) 

def test_bogus_dst(self):
        class ok(tzinfo):
            def utcoffset(self, dt): return HOUR
            def dst(self, dt): return HOUR

        now = self.theclass.now().replace(tzinfo=utc_real)
        # Doesn't blow up.
        now.astimezone(ok())

        # Does blow up.
        class notok(ok):
            def dst(self, dt): return None
        self.assertRaises(ValueError, now.astimezone, notok()) 

def test_set_dataframe_column_ns_dtype(self):
        x = DataFrame([datetime.now(), datetime.now()])
        self.assert_(x[0].dtype == np.dtype('M8[ns]')) 

def test_stringified_slice_with_tz(self):
        #GH2658
        import datetime
        start=datetime.datetime.now()
        idx=DatetimeIndex(start=start,freq="1d",periods=10)
        df=DataFrame(lrange(10),index=idx)
        df["2013-01-14 23:44:34.437768-05:00":] # no exception here 

def returnTime():
    timeInput = droptime.split(":")
    tarHour = int(timeInput[0])
    tarMin = int(timeInput[1])
    tarSec = int(timeInput[2])
    target = datetime.now()
    target = target.replace(hour=tarHour, minute=tarMin, second=tarSec)

    while True:
        cur = datetime.now()
        if cur >= target:
            clock.sleep(1)
            break 

def restart(self, timeout=None):
        """Restarts this Splunk instance.

        The service is unavailable until it has successfully restarted.

        If a *timeout* value is specified, ``restart`` blocks until the service
        resumes or the timeout period has been exceeded. Otherwise, ``restart`` returns
        immediately.

        :param timeout: A timeout period, in seconds.
        :type timeout: ``integer``
        """
        result = self.post("server/control/restart")
        if timeout is None: return result
        start = datetime.now()
        diff = timedelta(seconds=10)
        while datetime.now() - start < diff:
            try:
                self.login() # Has the server gone down yet?
                sleep(0.3)
            except Exception:
                break # Server is down. Move on.
        start = datetime.now()
        diff = timedelta(seconds=timeout)
        while datetime.now() - start < diff:
            try:
                self.login() # Awake yet?
                return result
            except Exception, e:
                sleep(2) 

def test_freezing_time(testdir):
    testdir.makepyfile("""
        import pytest
        from datetime import date, datetime

        @pytest.mark.freeze_time('2017-05-20 15:42')
        def test_sth():
            assert datetime.now().date() == date(2017, 5, 20)
    """)

    result = testdir.runpytest('-v', '-s')
    assert result.ret == 0 

def test_bogus_dst(self):
        class ok(tzinfo):
            def utcoffset(self, dt): return HOUR
            def dst(self, dt): return HOUR

        now = self.theclass.now().replace(tzinfo=utc_real)
        # Doesn't blow up.
        now.astimezone(ok())

        # Does blow up.
        class notok(ok):
            def dst(self, dt): return None
        self.assertRaises(ValueError, now.astimezone, notok()) 

def test_more_astimezone(self):
        # The inherited test_astimezone covered some trivial and error cases.
        fnone = FixedOffset(None, "None")
        f44m = FixedOffset(44, "44")
        fm5h = FixedOffset(-timedelta(hours=5), "m300")

        dt = self.theclass.now(tz=f44m)
        self.assertIs(dt.tzinfo, f44m)
        # Replacing with degenerate tzinfo raises an exception.
        self.assertRaises(ValueError, dt.astimezone, fnone)
        # Ditto with None tz.
        self.assertRaises(TypeError, dt.astimezone, None)
        # Replacing with same tzinfo makes no change.
        x = dt.astimezone(dt.tzinfo)
        self.assertIs(x.tzinfo, f44m)
        self.assertEqual(x.date(), dt.date())
        self.assertEqual(x.time(), dt.time())

        # Replacing with different tzinfo does adjust.
        got = dt.astimezone(fm5h)
        self.assertIs(got.tzinfo, fm5h)
        self.assertEqual(got.utcoffset(), timedelta(hours=-5))
        expected = dt - dt.utcoffset()  # in effect, convert to UTC
        expected += fm5h.utcoffset(dt)  # and from there to local time
        expected = expected.replace(tzinfo=fm5h) # and attach new tzinfo
        self.assertEqual(got.date(), expected.date())
        self.assertEqual(got.time(), expected.time())
        self.assertEqual(got.timetz(), expected.timetz())
        self.assertIs(got.tzinfo, expected.tzinfo)
        self.assertEqual(got, expected) 

def test_roundtrip(self):
        for dt in (self.theclass(1, 2, 3, 4, 5, 6, 7),
                   self.theclass.now()):
            # Verify dt -> string -> datetime identity.
            s = repr(dt)
            self.assertTrue(s.startswith('datetime.'))
            s = s[9:]
            dt2 = eval(s)
            self.assertEqual(dt, dt2)

            # Verify identity via reconstructing from pieces.
            dt2 = self.theclass(dt.year, dt.month, dt.day,
                                dt.hour, dt.minute, dt.second,
                                dt.microsecond)
            self.assertEqual(dt, dt2) 

def test_normal(self):
        fo = FixedOffset(3, "Three")
        self.assertIsInstance(fo, tzinfo)
        for dt in datetime.now(), None:
            self.assertEqual(fo.utcoffset(dt), timedelta(minutes=3))
            self.assertEqual(fo.tzname(dt), "Three")
            self.assertEqual(fo.dst(dt), timedelta(minutes=42)) 

def test_subclass_must_override(self):
        class NotEnough(tzinfo):
            def __init__(self, offset, name):
                self.__offset = offset
                self.__name = name
        self.assertTrue(issubclass(NotEnough, tzinfo))
        ne = NotEnough(3, "NotByALongShot")
        self.assertIsInstance(ne, tzinfo)

        dt = datetime.now()
        self.assertRaises(NotImplementedError, ne.tzname, dt)
        self.assertRaises(NotImplementedError, ne.utcoffset, dt)
        self.assertRaises(NotImplementedError, ne.dst, dt) 

def snapshots_summary(workbook, header_format, val_format):
    def transform(x):
        try:
            if x == "": return 0.0
            else: return float(x)
        except ValueError:
            return x
    with open(IN_SNAPSHOT_USAGE_LAST_MONTH) as f:
        reader = csv.DictReader(f)
        worksheet = workbook.add_worksheet("Snapshots last month")

        last_month = datetime.now() + dateutil.relativedelta.relativedelta(months=-1)
        worksheet.merge_range("A1:C1", "Snapshots for {}-{:02d}".format(last_month.year, last_month.month), header_format)

        cur_format = workbook.add_format()
        cur_format.set_align("center")
        cur_format.set_align("vcenter")
        cur_format.set_border()
        cur_format.set_num_format(NUMFORMAT_CURRENCY)

        worksheet.freeze_panes(2, 0)
        worksheet.set_column(0, 0, 25)
        worksheet.set_column(1, 1, 80)
        worksheet.set_column(2, 2, 25)

        refs = {
            "Account": [0, "Account", str, val_format],
            "ResourceId": [1, "Resource Id", str, val_format],
            "Cost": [2, "Cost", transform, cur_format],
        }
        for v in refs.values():
            worksheet.write(1, v[0], v[1], header_format)
        for i, line in zip(itertools.count(2), reader):
            for h, v in line.items():
                worksheet.write(i, refs[h][0], refs[h][2](v), refs[h][3]) 

def ebs_summary(workbook, header_format, val_format):
    def transform(x):
        try:
            if x == "": return 0.0
            else: return float(x)
        except ValueError:
            return x
    with open(IN_EBS_USAGE_LAST_MONTH) as f:
        reader = csv.DictReader(f)
        worksheet = workbook.add_worksheet("EBS last month")

        last_month = datetime.now() + dateutil.relativedelta.relativedelta(months=-1)
        worksheet.merge_range("A1:F1", "EBS for {}-{:02d}".format(last_month.year, last_month.month), header_format)
        worksheet.merge_range("A2:A3", "Account", header_format)
        worksheet.merge_range("B2:B3", "Resource ID", header_format)
        worksheet.merge_range("C2:C3", "Region", header_format)
        worksheet.merge_range("D2:D3", "Cost", header_format)
        worksheet.merge_range("E2:F2", "Instance Linked", header_format)

        cur_format = workbook.add_format()
        cur_format.set_align("center")
        cur_format.set_align("vcenter")
        cur_format.set_border()
        cur_format.set_num_format(NUMFORMAT_CURRENCY)

        worksheet.freeze_panes(3, 0)
        worksheet.set_column(0, len(reader.fieldnames)-1, 25)

        refs = {
            "Account": [0, "Account", str, val_format],
            "ResourceId": [1, "Resource Id", str, val_format],
            "Region": [2, "Region", str, val_format],
            "Cost": [3, "Cost", transform, cur_format],
            "InstanceId": [4, "ID", str, val_format],
            "InstanceName": [5, "Name", str, val_format],
        }
        for v in refs.values():
            worksheet.write(2, v[0], v[1], header_format)
        for i, line in zip(itertools.count(3), reader):
            for h, v in line.items():
                worksheet.write(i, refs[h][0], refs[h][2](v), refs[h][3]) 

def test_save_load_dates():
    from dataflows import Flow, dump_to_path, load, set_type, printer
    import datetime

    Flow(
        [{'id': 1, 'ts': datetime.datetime.now()},
         {'id': 2, 'ts': datetime.datetime.now()}],
        set_type('ts', type='datetime', format='%Y-%m-%d/%H:%M:%S'),
        dump_to_path('out/test_save_load_dates')
    ).process()

    res, _, _ = Flow(
        load('out/test_save_load_dates/datapackage.json'),
        printer()
    ).results() 

def test_load_dates():
    # from dateutil.tz import tzutc
    from dataflows import Flow, dump_to_path, load, set_type, ValidationError, exceptions
    import datetime

    _today = datetime.date.today()
    _now = datetime.datetime.now()

    def run_flow(datetime_format=None):
        Flow(
            [{'today': str(_today), 'now': str(_now)}],
            set_type('today', type='date'),
            set_type('now', type='datetime', format=datetime_format),
            dump_to_path('out/dump_dates')
        ).process()

    with pytest.raises(exceptions.ProcessorError) as excinfo:
        run_flow()
    assert isinstance(excinfo.value.cause, ValidationError)

    # Default is isoformat(), str() gives a slightly different format:
    # >>> from datetime import datetime
    # >>> n = datetime.now()
    # >>> str(n)
    # '2018-11-22 13:25:47.945209'
    # >>> n.isoformat()
    # '2018-11-22T13:25:47.945209'
    run_flow(datetime_format='%Y-%m-%d %H:%M:%S.%f')

    out_now = datetime.datetime(_now.year, _now.month, _now.day, _now.hour, _now.minute, _now.second)

    assert Flow(
        load('out/dump_dates/datapackage.json'),
    ).results()[0] == [[{'today': _today, 'now': out_now}]] 

def touch(self):
        """Extends the expiration time of the search to the current time (now) plus
        the time-to-live (ttl) value.

        :return: The :class:`Job`.
        """
        self.post("control", action="touch")
        return self 

def search(self, query, **kwargs):
        """Runs a search using a search query and any optional arguments you
        provide, and returns a `Job` object representing the search.

        :param query: A search query.
        :type query: ``string``
        :param kwargs: Arguments for the search (optional):

            * "output_mode" (``string``): Specifies the output format of the
              results.

            * "earliest_time" (``string``): Specifies the earliest time in the
              time range to
              search. The time string can be a UTC time (with fractional
              seconds), a relative time specifier (to now), or a formatted
              time string.

            * "latest_time" (``string``): Specifies the latest time in the time
              range to
              search. The time string can be a UTC time (with fractional
              seconds), a relative time specifier (to now), or a formatted
              time string.

            * "rf" (``string``): Specifies one or more fields to add to the
              search.

        :type kwargs: ``dict``
        :rtype: class:`Job`
        :returns: An object representing the created job.
        """
        return self.jobs.create(query, **kwargs) 

def restart(self, timeout=None):
        """Restarts this Splunk instance.

        The service is unavailable until it has successfully restarted.

        If a *timeout* value is specified, ``restart`` blocks until the service
        resumes or the timeout period has been exceeded. Otherwise, ``restart`` returns
        immediately.

        :param timeout: A timeout period, in seconds.
        :type timeout: ``integer``
        """
        msg = { "value": "Restart requested by " + self.username + "via the Splunk SDK for Python"}
        # This message will be deleted once the server actually restarts.
        self.messages.create(name="restart_required", **msg)
        result = self.post("/services/server/control/restart")
        if timeout is None: 
            return result
        start = datetime.now()
        diff = timedelta(seconds=timeout)
        while datetime.now() - start < diff:
            try:
                self.login()
                if not self.restart_required:
                    return result
            except Exception, e:
                sleep(1)