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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
assert (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
assert result.value == expected
assert tslib.pydt_to_i8(result) == expected
# re-creation shouldn't affect to internal value
result = Timestamp(result)
assert result.value == expected
assert 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
assert result.value == expected_tz
assert tslib.pydt_to_i8(result) == expected_tz
# should preserve tz
result = Timestamp(result)
assert result.value == expected_tz
assert tslib.pydt_to_i8(result) == expected_tz
# should convert to UTC
result = Timestamp(result, tz='UTC')
expected_utc = expected - offset * 3600 * 1000000000
assert result.value == expected_utc
assert 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
assert (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
assert result.value == expected
assert tslib.pydt_to_i8(result) == expected
# re-creation shouldn't affect to internal value
result = Timestamp(result)
assert result.value == expected
assert tslib.pydt_to_i8(result) == expected
# with timezone
for tz, offset in timezones:
result = Timestamp(date_str, tz=tz)
expected_tz = expected
assert result.value == expected_tz
assert tslib.pydt_to_i8(result) == expected_tz
# should preserve tz
result = Timestamp(result)
assert result.value == expected_tz
assert tslib.pydt_to_i8(result) == expected_tz
# should convert to UTC
result = Timestamp(result, tz='UTC')
expected_utc = expected
assert result.value == expected_utc
assert 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')
assert result.value == Timestamp('2013-11-01 05:00').value
expected = "Timestamp('2013-11-01 00:00:00-0500', tz='America/Chicago')" # noqa
assert repr(result) == expected
assert 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')
assert result.value == Timestamp('2013-11-01 05:00').value
expected = "Timestamp('2013-11-01 14:00:00+0900', tz='Asia/Tokyo')"
assert repr(result) == expected
assert 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")
assert result.value == Timestamp("2015-11-18 10:00").value
expected = "Timestamp('2015-11-18 15:45:00+0545', tz='Asia/Katmandu')"
assert repr(result) == expected
assert 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")
assert result.value == Timestamp("2015-11-18 10:00").value
expected = "Timestamp('2015-11-18 15:30:00+0530', tz='Asia/Kolkata')"
assert repr(result) == expected
assert result == eval(repr(result))
def test_constructor_invalid(self):
with tm.assert_raises_regex(TypeError, 'Cannot convert input'):
Timestamp(slice(2))
with tm.assert_raises_regex(ValueError, 'Cannot convert Period'):
Timestamp(Period('1000-01-01'))
def test_constructor_positional(self):
# see 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)
# see gh-11630
assert (repr(Timestamp(2015, 11, 12)) ==
repr(Timestamp('20151112')))
assert (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)
assert (repr(Timestamp(year=2015, month=11, day=12)) ==
repr(Timestamp('20151112')))
assert (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')
assert base == ts
assert ts.freq == 'D'
assert base.toordinal() == ts.toordinal()
ts = Timestamp.fromordinal(base.toordinal(), tz='US/Eastern')
assert Timestamp('2000-01-01', tz='US/Eastern') == ts
assert base.toordinal() == ts.toordinal()
def test_constructor_offset_depr(self):
# see gh-12160
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
ts = Timestamp('2011-01-01', offset='D')
assert ts.freq == 'D'
with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
assert ts.offset == 'D'
msg = "Can only specify freq or offset, not both"
with tm.assert_raises_regex(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')
assert Timestamp('2000-01-01') == ts
assert ts.freq == 'D'
assert base.toordinal() == ts.toordinal()
msg = "Can only specify freq or offset, not both"
with tm.assert_raises_regex(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)
assert result == expected
assert type(result) == type(expected)
result = ts.to_datetime64()
expected = np.datetime64(ts.value, 'ns')
assert result == expected
assert type(result) == type(expected)
assert 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)
assert date in repr(date_only)
assert tz_repr not in repr(date_only)
assert freq_repr not in repr(date_only)
assert date_only == eval(repr(date_only))
date_tz = Timestamp(date, tz=tz)
assert date in repr(date_tz)
assert tz_repr in repr(date_tz)
assert freq_repr not in repr(date_tz)
assert date_tz == eval(repr(date_tz))
date_freq = Timestamp(date, freq=freq)
assert date in repr(date_freq)
assert tz_repr not in repr(date_freq)
assert freq_repr in repr(date_freq)
assert date_freq == eval(repr(date_freq))
date_tz_freq = Timestamp(date, tz=tz, freq=freq)
assert date in repr(date_tz_freq)
assert tz_repr in repr(date_tz_freq)
assert freq_repr in repr(date_tz_freq)
assert date_tz_freq == eval(repr(date_tz_freq))
# This can cause the tz field to be populated, but it's redundant to
# include this information in the date-string.
tm._skip_if_no_pytz()
import pytz # noqa
date_with_utc_offset = Timestamp('2014-03-13 00:00:00-0400', tz=None)
assert '2014-03-13 00:00:00-0400' in repr(date_with_utc_offset)
assert 'tzoffset' not in repr(date_with_utc_offset)
assert 'pytz.FixedOffset(-240)' in repr(date_with_utc_offset)
expr = repr(date_with_utc_offset).replace("'pytz.FixedOffset(-240)'",
'pytz.FixedOffset(-240)')
assert 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')
assert local.hour == 9
assert local == Timestamp(t, tz='Asia/Tokyo')
conv = local.tz_convert('US/Eastern')
assert conv == Timestamp('2014-01-31 19:00', tz='US/Eastern')
assert conv.hour == 19
# preserves nanosecond
ts = Timestamp(t) + offsets.Nano(5)
local = ts.tz_localize('Asia/Tokyo')
assert local.hour == 9
assert local.nanosecond == 5
conv = local.tz_convert('US/Eastern')
assert conv.nanosecond == 5
assert 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')
assert rng[1] == ts_dst
assert rng[2] == ts_no_dst
pytest.raises(ValueError, ts.tz_localize, 'US/Eastern',
ambiguous='infer')
# GH 8025
with tm.assert_raises_regex(TypeError,
'Cannot localize tz-aware Timestamp, '
'use tz_convert for conversions'):
Timestamp('2011-01-01', tz='US/Eastern').tz_localize('Asia/Tokyo')
with tm.assert_raises_regex(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')
assert ts.tz_localize(tz, errors='coerce') is 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)
assert localized == Timestamp(t, tz=tz)
with pytest.raises(TypeError):
localized.tz_localize(tz)
reset = localized.tz_localize(None)
assert reset == ts
assert 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)
assert reset == Timestamp(t)
assert reset.tzinfo is None
assert 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):
assert 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)
assert abs(ts_from_method - ts_from_string) < delta
assert abs(ts_datetime - ts_from_method) < delta
assert abs(ts_from_method_tz - ts_from_string_tz) < delta
assert (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)
assert abs(ts_from_method - ts_from_string) < delta
assert abs(ts_datetime - ts_from_method) < delta
assert abs(ts_from_method_tz - ts_from_string_tz) < delta
assert (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:
assert (Timestamp(n).asm8.view('i8') ==
np.datetime64(n, 'ns').view('i8') == n)
assert (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
assert isinstance(value, (int, compat.long))
assert 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:
assert 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:
assert 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}"""
assert 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()
assert 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()
assert result == expected
def test_round(self):
# round
dt = Timestamp('20130101 09:10:11')
result = dt.round('D')
expected = Timestamp('20130101')
assert result == expected
dt = Timestamp('20130101 19:10:11')
result = dt.round('D')
expected = Timestamp('20130102')
assert result == expected
dt = Timestamp('20130201 12:00:00')
result = dt.round('D')
expected = Timestamp('20130202')
assert result == expected
dt = Timestamp('20130104 12:00:00')
result = dt.round('D')
expected = Timestamp('20130105')
assert result == expected
dt = Timestamp('20130104 12:32:00')
result = dt.round('30Min')
expected = Timestamp('20130104 12:30:00')
assert 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')
assert result == expected
# ceil
dt = Timestamp('20130101 09:10:11')
result = dt.ceil('D')
expected = Timestamp('20130102')
assert result == expected
# round with tz
dt = Timestamp('20130101 09:10:11', tz='US/Eastern')
result = dt.round('D')
expected = Timestamp('20130101', tz='US/Eastern')
assert result == expected
dt = Timestamp('20130101 09:10:11', tz='US/Eastern')
result = dt.round('s')
assert 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')
assert result == expected
result = Timestamp('2016-10-17 12:00:00.00149').round('ms')
expected = Timestamp('2016-10-17 12:00:00.001000')
assert result == expected
ts = Timestamp('2016-10-17 12:00:00.0015')
for freq in ['us', 'ns']:
assert ts == ts.round(freq)
result = Timestamp('2016-10-17 12:00:00.001501031').round('10ns')
expected = Timestamp('2016-10-17 12:00:00.001501030')
assert 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)
assert 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 tm.assert_raises_regex(ValueError, msg):
stamp.round('foo')
def test_class_ops_pytz(self):
tm._skip_if_no_pytz()
from pytz import timezone
def compare(x, y):
assert (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):
assert (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)
assert stamp.year == 2000
assert stamp.month == 1
assert stamp.microsecond == 0
assert stamp.nanosecond == 500
# GH 14415
val = np.iinfo(np.int64).min + 80000000000000
stamp = Timestamp(val)
assert stamp.year == 1677
assert stamp.month == 9
assert stamp.day == 21
assert stamp.microsecond == 145224
assert stamp.nanosecond == 192
def test_unit(self):
def check(val, unit=None, h=1, s=1, us=0):
stamp = Timestamp(val, unit=unit)
assert stamp.year == 2000
assert stamp.month == 1
assert stamp.day == 1
assert stamp.hour == h
if unit != 'D':
assert stamp.minute == 1
assert stamp.second == s
assert stamp.microsecond == us
else:
assert stamp.minute == 0
assert stamp.second == 0
assert stamp.microsecond == 0
assert 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)
assert result == Timestamp(str(base) + ".005000")
assert result.microsecond == 5000
result = Timestamp(base.value + Timedelta('5us').value)
assert result == Timestamp(str(base) + ".000005")
assert result.microsecond == 5
result = Timestamp(base.value + Timedelta('5ns').value)
assert result == Timestamp(str(base) + ".000000005")
assert result.nanosecond == 5
assert result.microsecond == 0
result = Timestamp(base.value + Timedelta('6ms 5us').value)
assert result == Timestamp(str(base) + ".006005")
assert result.microsecond == 5 + 6 * 1000
result = Timestamp(base.value + Timedelta('200ms 5us').value)
assert result == Timestamp(str(base) + ".200005")
assert result.microsecond == 5 + 200 * 1000
def test_comparison(self):
# 5-18-2012 00:00:00.000
stamp = long(1337299200000000000)
val = Timestamp(stamp)
assert val == val
assert not val != val
assert not val < val
assert val <= val
assert not val > val
assert val >= val
other = datetime(2012, 5, 18)
assert val == other
assert not val != other
assert not val < other
assert val <= other
assert not val > other
assert val >= other
other = Timestamp(stamp + 100)
assert val != other
assert val != other
assert val < other
assert val <= other
assert other > val
assert other >= val
def test_compare_invalid(self):
# GH 8058
val = Timestamp('20130101 12:01:02')
assert not val == 'foo'
assert not val == 10.0
assert not val == 1
assert not val == long(1)
assert not val == []
assert not val == {'foo': 1}
assert not val == np.float64(1)
assert not val == np.int64(1)
assert val != 'foo'
assert val != 10.0
assert val != 1
assert val != long(1)
assert val != []
assert val != {'foo': 1}
assert val != np.float64(1)
assert 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:
assert not a == b.to_pydatetime()
assert not 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:
assert not a == b.to_pydatetime()
assert not 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:
assert not a == b.to_pydatetime()
assert not a.to_pydatetime() == b
def test_delta_preserve_nanos(self):
val = Timestamp(long(1337299200000000123))
result = val + timedelta(1)
assert result.nanosecond == val.nanosecond
def test_frequency_misc(self):
assert (frequencies.get_freq_group('T') ==
frequencies.FreqGroup.FR_MIN)
code, stride = frequencies.get_freq_code(offsets.Hour())
assert code == frequencies.FreqGroup.FR_HR
code, stride = frequencies.get_freq_code((5, 'T'))
assert code == frequencies.FreqGroup.FR_MIN
assert stride == 5
offset = offsets.Hour()
result = frequencies.to_offset(offset)
assert result == offset