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test_timestamp.py
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test_timestamp.py
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""" test the scalar Timestamp """
import sys
import pytest
import operator
import calendar
import numpy as np
from datetime import datetime, timedelta
from distutils.version import LooseVersion
import pandas.util.testing as tm
from pandas.tseries import offsets, frequencies
from pandas._libs import tslib, period
from pandas._libs.tslib import get_timezone
from pandas.compat import lrange, long
from pandas.util.testing import assert_series_equal
from pandas.compat.numpy import np_datetime64_compat
from pandas import (Timestamp, date_range, Period, Timedelta, compat,
Series, NaT, DataFrame, DatetimeIndex)
from pandas.tseries.frequencies import (RESO_DAY, RESO_HR, RESO_MIN, RESO_US,
RESO_MS, RESO_SEC)
class TestTimestamp(tm.TestCase):
def test_constructor(self):
base_str = '2014-07-01 09:00'
base_dt = datetime(2014, 7, 1, 9)
base_expected = 1404205200000000000
# confirm base representation is correct
import calendar
self.assertEqual(calendar.timegm(base_dt.timetuple()) * 1000000000,
base_expected)
tests = [(base_str, base_dt, base_expected),
('2014-07-01 10:00', datetime(2014, 7, 1, 10),
base_expected + 3600 * 1000000000),
('2014-07-01 09:00:00.000008000',
datetime(2014, 7, 1, 9, 0, 0, 8),
base_expected + 8000),
('2014-07-01 09:00:00.000000005',
Timestamp('2014-07-01 09:00:00.000000005'),
base_expected + 5)]
tm._skip_if_no_pytz()
tm._skip_if_no_dateutil()
import pytz
import dateutil
timezones = [(None, 0), ('UTC', 0), (pytz.utc, 0), ('Asia/Tokyo', 9),
('US/Eastern', -4), ('dateutil/US/Pacific', -7),
(pytz.FixedOffset(-180), -3),
(dateutil.tz.tzoffset(None, 18000), 5)]
for date_str, date, expected in tests:
for result in [Timestamp(date_str), Timestamp(date)]:
# only with timestring
self.assertEqual(result.value, expected)
self.assertEqual(tslib.pydt_to_i8(result), expected)
# re-creation shouldn't affect to internal value
result = Timestamp(result)
self.assertEqual(result.value, expected)
self.assertEqual(tslib.pydt_to_i8(result), expected)
# with timezone
for tz, offset in timezones:
for result in [Timestamp(date_str, tz=tz), Timestamp(date,
tz=tz)]:
expected_tz = expected - offset * 3600 * 1000000000
self.assertEqual(result.value, expected_tz)
self.assertEqual(tslib.pydt_to_i8(result), expected_tz)
# should preserve tz
result = Timestamp(result)
self.assertEqual(result.value, expected_tz)
self.assertEqual(tslib.pydt_to_i8(result), expected_tz)
# should convert to UTC
result = Timestamp(result, tz='UTC')
expected_utc = expected - offset * 3600 * 1000000000
self.assertEqual(result.value, expected_utc)
self.assertEqual(tslib.pydt_to_i8(result), expected_utc)
def test_constructor_with_stringoffset(self):
# GH 7833
base_str = '2014-07-01 11:00:00+02:00'
base_dt = datetime(2014, 7, 1, 9)
base_expected = 1404205200000000000
# confirm base representation is correct
import calendar
self.assertEqual(calendar.timegm(base_dt.timetuple()) * 1000000000,
base_expected)
tests = [(base_str, base_expected),
('2014-07-01 12:00:00+02:00',
base_expected + 3600 * 1000000000),
('2014-07-01 11:00:00.000008000+02:00', base_expected + 8000),
('2014-07-01 11:00:00.000000005+02:00', base_expected + 5)]
tm._skip_if_no_pytz()
tm._skip_if_no_dateutil()
import pytz
import dateutil
timezones = [(None, 0), ('UTC', 0), (pytz.utc, 0), ('Asia/Tokyo', 9),
('US/Eastern', -4), ('dateutil/US/Pacific', -7),
(pytz.FixedOffset(-180), -3),
(dateutil.tz.tzoffset(None, 18000), 5)]
for date_str, expected in tests:
for result in [Timestamp(date_str)]:
# only with timestring
self.assertEqual(result.value, expected)
self.assertEqual(tslib.pydt_to_i8(result), expected)
# re-creation shouldn't affect to internal value
result = Timestamp(result)
self.assertEqual(result.value, expected)
self.assertEqual(tslib.pydt_to_i8(result), expected)
# with timezone
for tz, offset in timezones:
result = Timestamp(date_str, tz=tz)
expected_tz = expected
self.assertEqual(result.value, expected_tz)
self.assertEqual(tslib.pydt_to_i8(result), expected_tz)
# should preserve tz
result = Timestamp(result)
self.assertEqual(result.value, expected_tz)
self.assertEqual(tslib.pydt_to_i8(result), expected_tz)
# should convert to UTC
result = Timestamp(result, tz='UTC')
expected_utc = expected
self.assertEqual(result.value, expected_utc)
self.assertEqual(tslib.pydt_to_i8(result), expected_utc)
# This should be 2013-11-01 05:00 in UTC
# converted to Chicago tz
result = Timestamp('2013-11-01 00:00:00-0500', tz='America/Chicago')
self.assertEqual(result.value, Timestamp('2013-11-01 05:00').value)
expected = "Timestamp('2013-11-01 00:00:00-0500', tz='America/Chicago')" # noqa
self.assertEqual(repr(result), expected)
self.assertEqual(result, eval(repr(result)))
# This should be 2013-11-01 05:00 in UTC
# converted to Tokyo tz (+09:00)
result = Timestamp('2013-11-01 00:00:00-0500', tz='Asia/Tokyo')
self.assertEqual(result.value, Timestamp('2013-11-01 05:00').value)
expected = "Timestamp('2013-11-01 14:00:00+0900', tz='Asia/Tokyo')"
self.assertEqual(repr(result), expected)
self.assertEqual(result, eval(repr(result)))
# GH11708
# This should be 2015-11-18 10:00 in UTC
# converted to Asia/Katmandu
result = Timestamp("2015-11-18 15:45:00+05:45", tz="Asia/Katmandu")
self.assertEqual(result.value, Timestamp("2015-11-18 10:00").value)
expected = "Timestamp('2015-11-18 15:45:00+0545', tz='Asia/Katmandu')"
self.assertEqual(repr(result), expected)
self.assertEqual(result, eval(repr(result)))
# This should be 2015-11-18 10:00 in UTC
# converted to Asia/Kolkata
result = Timestamp("2015-11-18 15:30:00+05:30", tz="Asia/Kolkata")
self.assertEqual(result.value, Timestamp("2015-11-18 10:00").value)
expected = "Timestamp('2015-11-18 15:30:00+0530', tz='Asia/Kolkata')"
self.assertEqual(repr(result), expected)
self.assertEqual(result, eval(repr(result)))
def test_constructor_invalid(self):
with tm.assertRaisesRegexp(TypeError, 'Cannot convert input'):
Timestamp(slice(2))
with tm.assertRaisesRegexp(ValueError, 'Cannot convert Period'):
Timestamp(Period('1000-01-01'))
def test_constructor_positional(self):
# GH 10758
with pytest.raises(TypeError):
Timestamp(2000, 1)
with pytest.raises(ValueError):
Timestamp(2000, 0, 1)
with pytest.raises(ValueError):
Timestamp(2000, 13, 1)
with pytest.raises(ValueError):
Timestamp(2000, 1, 0)
with pytest.raises(ValueError):
Timestamp(2000, 1, 32)
# GH 11630
self.assertEqual(
repr(Timestamp(2015, 11, 12)),
repr(Timestamp('20151112')))
self.assertEqual(
repr(Timestamp(2015, 11, 12, 1, 2, 3, 999999)),
repr(Timestamp('2015-11-12 01:02:03.999999')))
def test_constructor_keyword(self):
# GH 10758
with pytest.raises(TypeError):
Timestamp(year=2000, month=1)
with pytest.raises(ValueError):
Timestamp(year=2000, month=0, day=1)
with pytest.raises(ValueError):
Timestamp(year=2000, month=13, day=1)
with pytest.raises(ValueError):
Timestamp(year=2000, month=1, day=0)
with pytest.raises(ValueError):
Timestamp(year=2000, month=1, day=32)
self.assertEqual(
repr(Timestamp(year=2015, month=11, day=12)),
repr(Timestamp('20151112')))
self.assertEqual(
repr(Timestamp(year=2015, month=11, day=12,
hour=1, minute=2, second=3, microsecond=999999)),
repr(Timestamp('2015-11-12 01:02:03.999999')))
def test_constructor_fromordinal(self):
base = datetime(2000, 1, 1)
ts = Timestamp.fromordinal(base.toordinal(), freq='D')
self.assertEqual(base, ts)
self.assertEqual(ts.freq, 'D')
self.assertEqual(base.toordinal(), ts.toordinal())
ts = Timestamp.fromordinal(base.toordinal(), tz='US/Eastern')
self.assertEqual(Timestamp('2000-01-01', tz='US/Eastern'), ts)
self.assertEqual(base.toordinal(), ts.toordinal())
def test_constructor_offset_depr(self):
# GH 12160
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
ts = Timestamp('2011-01-01', offset='D')
self.assertEqual(ts.freq, 'D')
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
self.assertEqual(ts.offset, 'D')
msg = "Can only specify freq or offset, not both"
with tm.assertRaisesRegexp(TypeError, msg):
Timestamp('2011-01-01', offset='D', freq='D')
def test_constructor_offset_depr_fromordinal(self):
# GH 12160
base = datetime(2000, 1, 1)
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
ts = Timestamp.fromordinal(base.toordinal(), offset='D')
self.assertEqual(Timestamp('2000-01-01'), ts)
self.assertEqual(ts.freq, 'D')
self.assertEqual(base.toordinal(), ts.toordinal())
msg = "Can only specify freq or offset, not both"
with tm.assertRaisesRegexp(TypeError, msg):
Timestamp.fromordinal(base.toordinal(), offset='D', freq='D')
def test_conversion(self):
# GH 9255
ts = Timestamp('2000-01-01')
result = ts.to_pydatetime()
expected = datetime(2000, 1, 1)
self.assertEqual(result, expected)
self.assertEqual(type(result), type(expected))
result = ts.to_datetime64()
expected = np.datetime64(ts.value, 'ns')
self.assertEqual(result, expected)
self.assertEqual(type(result), type(expected))
self.assertEqual(result.dtype, expected.dtype)
def test_repr(self):
tm._skip_if_no_pytz()
tm._skip_if_no_dateutil()
dates = ['2014-03-07', '2014-01-01 09:00',
'2014-01-01 00:00:00.000000001']
# dateutil zone change (only matters for repr)
import dateutil
if (dateutil.__version__ >= LooseVersion('2.3') and
(dateutil.__version__ <= LooseVersion('2.4.0') or
dateutil.__version__ >= LooseVersion('2.6.0'))):
timezones = ['UTC', 'Asia/Tokyo', 'US/Eastern',
'dateutil/US/Pacific']
else:
timezones = ['UTC', 'Asia/Tokyo', 'US/Eastern',
'dateutil/America/Los_Angeles']
freqs = ['D', 'M', 'S', 'N']
for date in dates:
for tz in timezones:
for freq in freqs:
# avoid to match with timezone name
freq_repr = "'{0}'".format(freq)
if tz.startswith('dateutil'):
tz_repr = tz.replace('dateutil', '')
else:
tz_repr = tz
date_only = Timestamp(date)
self.assertIn(date, repr(date_only))
self.assertNotIn(tz_repr, repr(date_only))
self.assertNotIn(freq_repr, repr(date_only))
self.assertEqual(date_only, eval(repr(date_only)))
date_tz = Timestamp(date, tz=tz)
self.assertIn(date, repr(date_tz))
self.assertIn(tz_repr, repr(date_tz))
self.assertNotIn(freq_repr, repr(date_tz))
self.assertEqual(date_tz, eval(repr(date_tz)))
date_freq = Timestamp(date, freq=freq)
self.assertIn(date, repr(date_freq))
self.assertNotIn(tz_repr, repr(date_freq))
self.assertIn(freq_repr, repr(date_freq))
self.assertEqual(date_freq, eval(repr(date_freq)))
date_tz_freq = Timestamp(date, tz=tz, freq=freq)
self.assertIn(date, repr(date_tz_freq))
self.assertIn(tz_repr, repr(date_tz_freq))
self.assertIn(freq_repr, repr(date_tz_freq))
self.assertEqual(date_tz_freq, eval(repr(date_tz_freq)))
# this can cause the tz field to be populated, but it's redundant to
# information in the datestring
tm._skip_if_no_pytz()
import pytz # noqa
date_with_utc_offset = Timestamp('2014-03-13 00:00:00-0400', tz=None)
self.assertIn('2014-03-13 00:00:00-0400', repr(date_with_utc_offset))
self.assertNotIn('tzoffset', repr(date_with_utc_offset))
self.assertIn('pytz.FixedOffset(-240)', repr(date_with_utc_offset))
expr = repr(date_with_utc_offset).replace("'pytz.FixedOffset(-240)'",
'pytz.FixedOffset(-240)')
self.assertEqual(date_with_utc_offset, eval(expr))
def test_bounds_with_different_units(self):
out_of_bounds_dates = ('1677-09-21', '2262-04-12', )
time_units = ('D', 'h', 'm', 's', 'ms', 'us')
for date_string in out_of_bounds_dates:
for unit in time_units:
pytest.raises(ValueError, Timestamp, np.datetime64(
date_string, dtype='M8[%s]' % unit))
in_bounds_dates = ('1677-09-23', '2262-04-11', )
for date_string in in_bounds_dates:
for unit in time_units:
Timestamp(np.datetime64(date_string, dtype='M8[%s]' % unit))
def test_tz(self):
t = '2014-02-01 09:00'
ts = Timestamp(t)
local = ts.tz_localize('Asia/Tokyo')
self.assertEqual(local.hour, 9)
self.assertEqual(local, Timestamp(t, tz='Asia/Tokyo'))
conv = local.tz_convert('US/Eastern')
self.assertEqual(conv, Timestamp('2014-01-31 19:00', tz='US/Eastern'))
self.assertEqual(conv.hour, 19)
# preserves nanosecond
ts = Timestamp(t) + offsets.Nano(5)
local = ts.tz_localize('Asia/Tokyo')
self.assertEqual(local.hour, 9)
self.assertEqual(local.nanosecond, 5)
conv = local.tz_convert('US/Eastern')
self.assertEqual(conv.nanosecond, 5)
self.assertEqual(conv.hour, 19)
def test_tz_localize_ambiguous(self):
ts = Timestamp('2014-11-02 01:00')
ts_dst = ts.tz_localize('US/Eastern', ambiguous=True)
ts_no_dst = ts.tz_localize('US/Eastern', ambiguous=False)
rng = date_range('2014-11-02', periods=3, freq='H', tz='US/Eastern')
self.assertEqual(rng[1], ts_dst)
self.assertEqual(rng[2], ts_no_dst)
pytest.raises(ValueError, ts.tz_localize, 'US/Eastern',
ambiguous='infer')
# GH 8025
with tm.assertRaisesRegexp(TypeError,
'Cannot localize tz-aware Timestamp, use '
'tz_convert for conversions'):
Timestamp('2011-01-01', tz='US/Eastern').tz_localize('Asia/Tokyo')
with tm.assertRaisesRegexp(TypeError,
'Cannot convert tz-naive Timestamp, use '
'tz_localize to localize'):
Timestamp('2011-01-01').tz_convert('Asia/Tokyo')
def test_tz_localize_nonexistent(self):
# See issue 13057
from pytz.exceptions import NonExistentTimeError
times = ['2015-03-08 02:00', '2015-03-08 02:30',
'2015-03-29 02:00', '2015-03-29 02:30']
timezones = ['US/Eastern', 'US/Pacific',
'Europe/Paris', 'Europe/Belgrade']
for t, tz in zip(times, timezones):
ts = Timestamp(t)
pytest.raises(NonExistentTimeError, ts.tz_localize,
tz)
pytest.raises(NonExistentTimeError, ts.tz_localize,
tz, errors='raise')
self.assertIs(ts.tz_localize(tz, errors='coerce'),
NaT)
def test_tz_localize_errors_ambiguous(self):
# See issue 13057
from pytz.exceptions import AmbiguousTimeError
ts = Timestamp('2015-11-1 01:00')
pytest.raises(AmbiguousTimeError,
ts.tz_localize, 'US/Pacific', errors='coerce')
def test_tz_localize_roundtrip(self):
for tz in ['UTC', 'Asia/Tokyo', 'US/Eastern', 'dateutil/US/Pacific']:
for t in ['2014-02-01 09:00', '2014-07-08 09:00',
'2014-11-01 17:00', '2014-11-05 00:00']:
ts = Timestamp(t)
localized = ts.tz_localize(tz)
self.assertEqual(localized, Timestamp(t, tz=tz))
with pytest.raises(TypeError):
localized.tz_localize(tz)
reset = localized.tz_localize(None)
self.assertEqual(reset, ts)
self.assertTrue(reset.tzinfo is None)
def test_tz_convert_roundtrip(self):
for tz in ['UTC', 'Asia/Tokyo', 'US/Eastern', 'dateutil/US/Pacific']:
for t in ['2014-02-01 09:00', '2014-07-08 09:00',
'2014-11-01 17:00', '2014-11-05 00:00']:
ts = Timestamp(t, tz='UTC')
converted = ts.tz_convert(tz)
reset = converted.tz_convert(None)
self.assertEqual(reset, Timestamp(t))
self.assertTrue(reset.tzinfo is None)
self.assertEqual(reset,
converted.tz_convert('UTC').tz_localize(None))
def test_barely_oob_dts(self):
one_us = np.timedelta64(1).astype('timedelta64[us]')
# By definition we can't go out of bounds in [ns], so we
# convert the datetime64s to [us] so we can go out of bounds
min_ts_us = np.datetime64(Timestamp.min).astype('M8[us]')
max_ts_us = np.datetime64(Timestamp.max).astype('M8[us]')
# No error for the min/max datetimes
Timestamp(min_ts_us)
Timestamp(max_ts_us)
# One us less than the minimum is an error
pytest.raises(ValueError, Timestamp, min_ts_us - one_us)
# One us more than the maximum is an error
pytest.raises(ValueError, Timestamp, max_ts_us + one_us)
def test_utc_z_designator(self):
self.assertEqual(get_timezone(
Timestamp('2014-11-02 01:00Z').tzinfo), 'UTC')
def test_now(self):
# #9000
ts_from_string = Timestamp('now')
ts_from_method = Timestamp.now()
ts_datetime = datetime.now()
ts_from_string_tz = Timestamp('now', tz='US/Eastern')
ts_from_method_tz = Timestamp.now(tz='US/Eastern')
# Check that the delta between the times is less than 1s (arbitrarily
# small)
delta = Timedelta(seconds=1)
self.assertTrue(abs(ts_from_method - ts_from_string) < delta)
self.assertTrue(abs(ts_datetime - ts_from_method) < delta)
self.assertTrue(abs(ts_from_method_tz - ts_from_string_tz) < delta)
self.assertTrue(abs(ts_from_string_tz.tz_localize(None) -
ts_from_method_tz.tz_localize(None)) < delta)
def test_today(self):
ts_from_string = Timestamp('today')
ts_from_method = Timestamp.today()
ts_datetime = datetime.today()
ts_from_string_tz = Timestamp('today', tz='US/Eastern')
ts_from_method_tz = Timestamp.today(tz='US/Eastern')
# Check that the delta between the times is less than 1s (arbitrarily
# small)
delta = Timedelta(seconds=1)
self.assertTrue(abs(ts_from_method - ts_from_string) < delta)
self.assertTrue(abs(ts_datetime - ts_from_method) < delta)
self.assertTrue(abs(ts_from_method_tz - ts_from_string_tz) < delta)
self.assertTrue(abs(ts_from_string_tz.tz_localize(None) -
ts_from_method_tz.tz_localize(None)) < delta)
def test_asm8(self):
np.random.seed(7960929)
ns = [Timestamp.min.value, Timestamp.max.value, 1000, ]
for n in ns:
self.assertEqual(Timestamp(n).asm8.view('i8'),
np.datetime64(n, 'ns').view('i8'), n)
self.assertEqual(Timestamp('nat').asm8.view('i8'),
np.datetime64('nat', 'ns').view('i8'))
def test_fields(self):
def check(value, equal):
# that we are int/long like
self.assertTrue(isinstance(value, (int, compat.long)))
self.assertEqual(value, equal)
# GH 10050
ts = Timestamp('2015-05-10 09:06:03.000100001')
check(ts.year, 2015)
check(ts.month, 5)
check(ts.day, 10)
check(ts.hour, 9)
check(ts.minute, 6)
check(ts.second, 3)
pytest.raises(AttributeError, lambda: ts.millisecond)
check(ts.microsecond, 100)
check(ts.nanosecond, 1)
check(ts.dayofweek, 6)
check(ts.quarter, 2)
check(ts.dayofyear, 130)
check(ts.week, 19)
check(ts.daysinmonth, 31)
check(ts.daysinmonth, 31)
# GH 13303
ts = Timestamp('2014-12-31 23:59:00-05:00', tz='US/Eastern')
check(ts.year, 2014)
check(ts.month, 12)
check(ts.day, 31)
check(ts.hour, 23)
check(ts.minute, 59)
check(ts.second, 0)
pytest.raises(AttributeError, lambda: ts.millisecond)
check(ts.microsecond, 0)
check(ts.nanosecond, 0)
check(ts.dayofweek, 2)
check(ts.quarter, 4)
check(ts.dayofyear, 365)
check(ts.week, 1)
check(ts.daysinmonth, 31)
ts = Timestamp('2014-01-01 00:00:00+01:00')
starts = ['is_month_start', 'is_quarter_start', 'is_year_start']
for start in starts:
self.assertTrue(getattr(ts, start))
ts = Timestamp('2014-12-31 23:59:59+01:00')
ends = ['is_month_end', 'is_year_end', 'is_quarter_end']
for end in ends:
self.assertTrue(getattr(ts, end))
def test_pprint(self):
# GH12622
import pprint
nested_obj = {'foo': 1,
'bar': [{'w': {'a': Timestamp('2011-01-01')}}] * 10}
result = pprint.pformat(nested_obj, width=50)
expected = r"""{'bar': [{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}},
{'w': {'a': Timestamp('2011-01-01 00:00:00')}}],
'foo': 1}"""
self.assertEqual(result, expected)
def to_datetime_depr(self):
# see gh-8254
ts = Timestamp('2011-01-01')
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
expected = datetime(2011, 1, 1)
result = ts.to_datetime()
self.assertEqual(result, expected)
def to_pydatetime_nonzero_nano(self):
ts = Timestamp('2011-01-01 9:00:00.123456789')
# Warn the user of data loss (nanoseconds).
with tm.assert_produces_warning(UserWarning,
check_stacklevel=False):
expected = datetime(2011, 1, 1, 9, 0, 0, 123456)
result = ts.to_pydatetime()
self.assertEqual(result, expected)
def test_round(self):
# round
dt = Timestamp('20130101 09:10:11')
result = dt.round('D')
expected = Timestamp('20130101')
self.assertEqual(result, expected)
dt = Timestamp('20130101 19:10:11')
result = dt.round('D')
expected = Timestamp('20130102')
self.assertEqual(result, expected)
dt = Timestamp('20130201 12:00:00')
result = dt.round('D')
expected = Timestamp('20130202')
self.assertEqual(result, expected)
dt = Timestamp('20130104 12:00:00')
result = dt.round('D')
expected = Timestamp('20130105')
self.assertEqual(result, expected)
dt = Timestamp('20130104 12:32:00')
result = dt.round('30Min')
expected = Timestamp('20130104 12:30:00')
self.assertEqual(result, expected)
dti = date_range('20130101 09:10:11', periods=5)
result = dti.round('D')
expected = date_range('20130101', periods=5)
tm.assert_index_equal(result, expected)
# floor
dt = Timestamp('20130101 09:10:11')
result = dt.floor('D')
expected = Timestamp('20130101')
self.assertEqual(result, expected)
# ceil
dt = Timestamp('20130101 09:10:11')
result = dt.ceil('D')
expected = Timestamp('20130102')
self.assertEqual(result, expected)
# round with tz
dt = Timestamp('20130101 09:10:11', tz='US/Eastern')
result = dt.round('D')
expected = Timestamp('20130101', tz='US/Eastern')
self.assertEqual(result, expected)
dt = Timestamp('20130101 09:10:11', tz='US/Eastern')
result = dt.round('s')
self.assertEqual(result, dt)
dti = date_range('20130101 09:10:11',
periods=5).tz_localize('UTC').tz_convert('US/Eastern')
result = dti.round('D')
expected = date_range('20130101', periods=5).tz_localize('US/Eastern')
tm.assert_index_equal(result, expected)
result = dti.round('s')
tm.assert_index_equal(result, dti)
# invalid
for freq in ['Y', 'M', 'foobar']:
pytest.raises(ValueError, lambda: dti.round(freq))
# GH 14440 & 15578
result = Timestamp('2016-10-17 12:00:00.0015').round('ms')
expected = Timestamp('2016-10-17 12:00:00.002000')
self.assertEqual(result, expected)
result = Timestamp('2016-10-17 12:00:00.00149').round('ms')
expected = Timestamp('2016-10-17 12:00:00.001000')
self.assertEqual(result, expected)
ts = Timestamp('2016-10-17 12:00:00.0015')
for freq in ['us', 'ns']:
self.assertEqual(ts, ts.round(freq))
result = Timestamp('2016-10-17 12:00:00.001501031').round('10ns')
expected = Timestamp('2016-10-17 12:00:00.001501030')
self.assertEqual(result, expected)
with tm.assert_produces_warning():
Timestamp('2016-10-17 12:00:00.001501031').round('1010ns')
def test_round_misc(self):
stamp = Timestamp('2000-01-05 05:09:15.13')
def _check_round(freq, expected):
result = stamp.round(freq=freq)
self.assertEqual(result, expected)
for freq, expected in [('D', Timestamp('2000-01-05 00:00:00')),
('H', Timestamp('2000-01-05 05:00:00')),
('S', Timestamp('2000-01-05 05:09:15'))]:
_check_round(freq, expected)
msg = frequencies._INVALID_FREQ_ERROR
with self.assertRaisesRegexp(ValueError, msg):
stamp.round('foo')
def test_class_ops_pytz(self):
tm._skip_if_no_pytz()
from pytz import timezone
def compare(x, y):
self.assertEqual(int(Timestamp(x).value / 1e9),
int(Timestamp(y).value / 1e9))
compare(Timestamp.now(), datetime.now())
compare(Timestamp.now('UTC'), datetime.now(timezone('UTC')))
compare(Timestamp.utcnow(), datetime.utcnow())
compare(Timestamp.today(), datetime.today())
current_time = calendar.timegm(datetime.now().utctimetuple())
compare(Timestamp.utcfromtimestamp(current_time),
datetime.utcfromtimestamp(current_time))
compare(Timestamp.fromtimestamp(current_time),
datetime.fromtimestamp(current_time))
date_component = datetime.utcnow()
time_component = (date_component + timedelta(minutes=10)).time()
compare(Timestamp.combine(date_component, time_component),
datetime.combine(date_component, time_component))
def test_class_ops_dateutil(self):
tm._skip_if_no_dateutil()
from dateutil.tz import tzutc
def compare(x, y):
self.assertEqual(int(np.round(Timestamp(x).value / 1e9)),
int(np.round(Timestamp(y).value / 1e9)))
compare(Timestamp.now(), datetime.now())
compare(Timestamp.now('UTC'), datetime.now(tzutc()))
compare(Timestamp.utcnow(), datetime.utcnow())
compare(Timestamp.today(), datetime.today())
current_time = calendar.timegm(datetime.now().utctimetuple())
compare(Timestamp.utcfromtimestamp(current_time),
datetime.utcfromtimestamp(current_time))
compare(Timestamp.fromtimestamp(current_time),
datetime.fromtimestamp(current_time))
date_component = datetime.utcnow()
time_component = (date_component + timedelta(minutes=10)).time()
compare(Timestamp.combine(date_component, time_component),
datetime.combine(date_component, time_component))
def test_basics_nanos(self):
val = np.int64(946684800000000000).view('M8[ns]')
stamp = Timestamp(val.view('i8') + 500)
self.assertEqual(stamp.year, 2000)
self.assertEqual(stamp.month, 1)
self.assertEqual(stamp.microsecond, 0)
self.assertEqual(stamp.nanosecond, 500)
# GH 14415
val = np.iinfo(np.int64).min + 80000000000000
stamp = Timestamp(val)
self.assertEqual(stamp.year, 1677)
self.assertEqual(stamp.month, 9)
self.assertEqual(stamp.day, 21)
self.assertEqual(stamp.microsecond, 145224)
self.assertEqual(stamp.nanosecond, 192)
def test_unit(self):
def check(val, unit=None, h=1, s=1, us=0):
stamp = Timestamp(val, unit=unit)
self.assertEqual(stamp.year, 2000)
self.assertEqual(stamp.month, 1)
self.assertEqual(stamp.day, 1)
self.assertEqual(stamp.hour, h)
if unit != 'D':
self.assertEqual(stamp.minute, 1)
self.assertEqual(stamp.second, s)
self.assertEqual(stamp.microsecond, us)
else:
self.assertEqual(stamp.minute, 0)
self.assertEqual(stamp.second, 0)
self.assertEqual(stamp.microsecond, 0)
self.assertEqual(stamp.nanosecond, 0)
ts = Timestamp('20000101 01:01:01')
val = ts.value
days = (ts - Timestamp('1970-01-01')).days
check(val)
check(val / long(1000), unit='us')
check(val / long(1000000), unit='ms')
check(val / long(1000000000), unit='s')
check(days, unit='D', h=0)
# using truediv, so these are like floats
if compat.PY3:
check((val + 500000) / long(1000000000), unit='s', us=500)
check((val + 500000000) / long(1000000000), unit='s', us=500000)
check((val + 500000) / long(1000000), unit='ms', us=500)
# get chopped in py2
else:
check((val + 500000) / long(1000000000), unit='s')
check((val + 500000000) / long(1000000000), unit='s')
check((val + 500000) / long(1000000), unit='ms')
# ok
check((val + 500000) / long(1000), unit='us', us=500)
check((val + 500000000) / long(1000000), unit='ms', us=500000)
# floats
check(val / 1000.0 + 5, unit='us', us=5)
check(val / 1000.0 + 5000, unit='us', us=5000)
check(val / 1000000.0 + 0.5, unit='ms', us=500)
check(val / 1000000.0 + 0.005, unit='ms', us=5)
check(val / 1000000000.0 + 0.5, unit='s', us=500000)
check(days + 0.5, unit='D', h=12)
def test_roundtrip(self):
# test value to string and back conversions
# further test accessors
base = Timestamp('20140101 00:00:00')
result = Timestamp(base.value + Timedelta('5ms').value)
self.assertEqual(result, Timestamp(str(base) + ".005000"))
self.assertEqual(result.microsecond, 5000)
result = Timestamp(base.value + Timedelta('5us').value)
self.assertEqual(result, Timestamp(str(base) + ".000005"))
self.assertEqual(result.microsecond, 5)
result = Timestamp(base.value + Timedelta('5ns').value)
self.assertEqual(result, Timestamp(str(base) + ".000000005"))
self.assertEqual(result.nanosecond, 5)
self.assertEqual(result.microsecond, 0)
result = Timestamp(base.value + Timedelta('6ms 5us').value)
self.assertEqual(result, Timestamp(str(base) + ".006005"))
self.assertEqual(result.microsecond, 5 + 6 * 1000)
result = Timestamp(base.value + Timedelta('200ms 5us').value)
self.assertEqual(result, Timestamp(str(base) + ".200005"))
self.assertEqual(result.microsecond, 5 + 200 * 1000)
def test_comparison(self):
# 5-18-2012 00:00:00.000
stamp = long(1337299200000000000)
val = Timestamp(stamp)
self.assertEqual(val, val)
self.assertFalse(val != val)
self.assertFalse(val < val)
self.assertTrue(val <= val)
self.assertFalse(val > val)
self.assertTrue(val >= val)
other = datetime(2012, 5, 18)
self.assertEqual(val, other)
self.assertFalse(val != other)
self.assertFalse(val < other)
self.assertTrue(val <= other)
self.assertFalse(val > other)
self.assertTrue(val >= other)
other = Timestamp(stamp + 100)
self.assertNotEqual(val, other)
self.assertNotEqual(val, other)
self.assertTrue(val < other)
self.assertTrue(val <= other)
self.assertTrue(other > val)
self.assertTrue(other >= val)
def test_compare_invalid(self):
# GH 8058
val = Timestamp('20130101 12:01:02')
self.assertFalse(val == 'foo')
self.assertFalse(val == 10.0)
self.assertFalse(val == 1)
self.assertFalse(val == long(1))
self.assertFalse(val == [])
self.assertFalse(val == {'foo': 1})
self.assertFalse(val == np.float64(1))
self.assertFalse(val == np.int64(1))
self.assertTrue(val != 'foo')
self.assertTrue(val != 10.0)
self.assertTrue(val != 1)
self.assertTrue(val != long(1))
self.assertTrue(val != [])
self.assertTrue(val != {'foo': 1})
self.assertTrue(val != np.float64(1))
self.assertTrue(val != np.int64(1))
# ops testing
df = DataFrame(np.random.randn(5, 2))
a = df[0]
b = Series(np.random.randn(5))
b.name = Timestamp('2000-01-01')
tm.assert_series_equal(a / b, 1 / (b / a))
def test_cant_compare_tz_naive_w_aware(self):
tm._skip_if_no_pytz()
# #1404
a = Timestamp('3/12/2012')
b = Timestamp('3/12/2012', tz='utc')
pytest.raises(Exception, a.__eq__, b)
pytest.raises(Exception, a.__ne__, b)
pytest.raises(Exception, a.__lt__, b)
pytest.raises(Exception, a.__gt__, b)
pytest.raises(Exception, b.__eq__, a)
pytest.raises(Exception, b.__ne__, a)
pytest.raises(Exception, b.__lt__, a)
pytest.raises(Exception, b.__gt__, a)
if sys.version_info < (3, 3):
pytest.raises(Exception, a.__eq__, b.to_pydatetime())
pytest.raises(Exception, a.to_pydatetime().__eq__, b)
else:
self.assertFalse(a == b.to_pydatetime())
self.assertFalse(a.to_pydatetime() == b)
def test_cant_compare_tz_naive_w_aware_explicit_pytz(self):
tm._skip_if_no_pytz()
from pytz import utc
# #1404
a = Timestamp('3/12/2012')
b = Timestamp('3/12/2012', tz=utc)
pytest.raises(Exception, a.__eq__, b)
pytest.raises(Exception, a.__ne__, b)
pytest.raises(Exception, a.__lt__, b)
pytest.raises(Exception, a.__gt__, b)
pytest.raises(Exception, b.__eq__, a)
pytest.raises(Exception, b.__ne__, a)
pytest.raises(Exception, b.__lt__, a)
pytest.raises(Exception, b.__gt__, a)
if sys.version_info < (3, 3):
pytest.raises(Exception, a.__eq__, b.to_pydatetime())
pytest.raises(Exception, a.to_pydatetime().__eq__, b)
else:
self.assertFalse(a == b.to_pydatetime())
self.assertFalse(a.to_pydatetime() == b)
def test_cant_compare_tz_naive_w_aware_dateutil(self):
tm._skip_if_no_dateutil()
from dateutil.tz import tzutc
utc = tzutc()
# #1404
a = Timestamp('3/12/2012')
b = Timestamp('3/12/2012', tz=utc)
pytest.raises(Exception, a.__eq__, b)
pytest.raises(Exception, a.__ne__, b)
pytest.raises(Exception, a.__lt__, b)
pytest.raises(Exception, a.__gt__, b)
pytest.raises(Exception, b.__eq__, a)
pytest.raises(Exception, b.__ne__, a)
pytest.raises(Exception, b.__lt__, a)
pytest.raises(Exception, b.__gt__, a)
if sys.version_info < (3, 3):
pytest.raises(Exception, a.__eq__, b.to_pydatetime())
pytest.raises(Exception, a.to_pydatetime().__eq__, b)
else:
self.assertFalse(a == b.to_pydatetime())
self.assertFalse(a.to_pydatetime() == b)
def test_delta_preserve_nanos(self):
val = Timestamp(long(1337299200000000123))
result = val + timedelta(1)
self.assertEqual(result.nanosecond, val.nanosecond)
def test_frequency_misc(self):
self.assertEqual(frequencies.get_freq_group('T'),
frequencies.FreqGroup.FR_MIN)
code, stride = frequencies.get_freq_code(offsets.Hour())
self.assertEqual(code, frequencies.FreqGroup.FR_HR)
code, stride = frequencies.get_freq_code((5, 'T'))
self.assertEqual(code, frequencies.FreqGroup.FR_MIN)