Updated script that can be controled by Nodejs web app

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mac OS
2024-11-25 12:24:18 +07:00
parent c440eda1f4
commit 8b0ab2bd3a
8662 changed files with 1803808 additions and 34 deletions

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import pytest
from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
from pandas.errors import OutOfBoundsDatetime
from pandas import Timestamp
class TestTimestampAsUnit:
def test_as_unit(self):
ts = Timestamp("1970-01-01").as_unit("ns")
assert ts.unit == "ns"
assert ts.as_unit("ns") is ts
res = ts.as_unit("us")
assert res._value == ts._value // 1000
assert res._creso == NpyDatetimeUnit.NPY_FR_us.value
rt = res.as_unit("ns")
assert rt._value == ts._value
assert rt._creso == ts._creso
res = ts.as_unit("ms")
assert res._value == ts._value // 1_000_000
assert res._creso == NpyDatetimeUnit.NPY_FR_ms.value
rt = res.as_unit("ns")
assert rt._value == ts._value
assert rt._creso == ts._creso
res = ts.as_unit("s")
assert res._value == ts._value // 1_000_000_000
assert res._creso == NpyDatetimeUnit.NPY_FR_s.value
rt = res.as_unit("ns")
assert rt._value == ts._value
assert rt._creso == ts._creso
def test_as_unit_overflows(self):
# microsecond that would be just out of bounds for nano
us = 9223372800000000
ts = Timestamp._from_value_and_reso(us, NpyDatetimeUnit.NPY_FR_us.value, None)
msg = "Cannot cast 2262-04-12 00:00:00 to unit='ns' without overflow"
with pytest.raises(OutOfBoundsDatetime, match=msg):
ts.as_unit("ns")
res = ts.as_unit("ms")
assert res._value == us // 1000
assert res._creso == NpyDatetimeUnit.NPY_FR_ms.value
def test_as_unit_rounding(self):
ts = Timestamp(1_500_000) # i.e. 1500 microseconds
res = ts.as_unit("ms")
expected = Timestamp(1_000_000) # i.e. 1 millisecond
assert res == expected
assert res._creso == NpyDatetimeUnit.NPY_FR_ms.value
assert res._value == 1
with pytest.raises(ValueError, match="Cannot losslessly convert units"):
ts.as_unit("ms", round_ok=False)
def test_as_unit_non_nano(self):
# case where we are going neither to nor from nano
ts = Timestamp("1970-01-02").as_unit("ms")
assert ts.year == 1970
assert ts.month == 1
assert ts.day == 2
assert ts.hour == ts.minute == ts.second == ts.microsecond == ts.nanosecond == 0
res = ts.as_unit("s")
assert res._value == 24 * 3600
assert res.year == 1970
assert res.month == 1
assert res.day == 2
assert (
res.hour
== res.minute
== res.second
== res.microsecond
== res.nanosecond
== 0
)

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import pytest
from pandas._libs.tslibs import Timestamp
from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
class TestTimestampNormalize:
@pytest.mark.parametrize("arg", ["2013-11-30", "2013-11-30 12:00:00"])
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_normalize(self, tz_naive_fixture, arg, unit):
tz = tz_naive_fixture
ts = Timestamp(arg, tz=tz).as_unit(unit)
result = ts.normalize()
expected = Timestamp("2013-11-30", tz=tz)
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
def test_normalize_pre_epoch_dates(self):
# GH: 36294
result = Timestamp("1969-01-01 09:00:00").normalize()
expected = Timestamp("1969-01-01 00:00:00")
assert result == expected

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from datetime import datetime
from dateutil.tz import gettz
import numpy as np
import pytest
import pytz
from pandas._libs.tslibs import (
OutOfBoundsDatetime,
Timestamp,
conversion,
)
from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
import pandas.util._test_decorators as td
import pandas._testing as tm
class TestTimestampReplace:
def test_replace_out_of_pydatetime_bounds(self):
# GH#50348
ts = Timestamp("2016-01-01").as_unit("ns")
msg = "Out of bounds timestamp: 99999-01-01 00:00:00 with frequency 'ns'"
with pytest.raises(OutOfBoundsDatetime, match=msg):
ts.replace(year=99_999)
ts = ts.as_unit("ms")
result = ts.replace(year=99_999)
assert result.year == 99_999
assert result._value == Timestamp(np.datetime64("99999-01-01", "ms"))._value
def test_replace_non_nano(self):
ts = Timestamp._from_value_and_reso(
91514880000000000, NpyDatetimeUnit.NPY_FR_us.value, None
)
assert ts.to_pydatetime() == datetime(4869, 12, 28)
result = ts.replace(year=4900)
assert result._creso == ts._creso
assert result.to_pydatetime() == datetime(4900, 12, 28)
def test_replace_naive(self):
# GH#14621, GH#7825
ts = Timestamp("2016-01-01 09:00:00")
result = ts.replace(hour=0)
expected = Timestamp("2016-01-01 00:00:00")
assert result == expected
def test_replace_aware(self, tz_aware_fixture):
tz = tz_aware_fixture
# GH#14621, GH#7825
# replacing datetime components with and w/o presence of a timezone
ts = Timestamp("2016-01-01 09:00:00", tz=tz)
result = ts.replace(hour=0)
expected = Timestamp("2016-01-01 00:00:00", tz=tz)
assert result == expected
def test_replace_preserves_nanos(self, tz_aware_fixture):
tz = tz_aware_fixture
# GH#14621, GH#7825
ts = Timestamp("2016-01-01 09:00:00.000000123", tz=tz)
result = ts.replace(hour=0)
expected = Timestamp("2016-01-01 00:00:00.000000123", tz=tz)
assert result == expected
def test_replace_multiple(self, tz_aware_fixture):
tz = tz_aware_fixture
# GH#14621, GH#7825
# replacing datetime components with and w/o presence of a timezone
# test all
ts = Timestamp("2016-01-01 09:00:00.000000123", tz=tz)
result = ts.replace(
year=2015,
month=2,
day=2,
hour=0,
minute=5,
second=5,
microsecond=5,
nanosecond=5,
)
expected = Timestamp("2015-02-02 00:05:05.000005005", tz=tz)
assert result == expected
def test_replace_invalid_kwarg(self, tz_aware_fixture):
tz = tz_aware_fixture
# GH#14621, GH#7825
ts = Timestamp("2016-01-01 09:00:00.000000123", tz=tz)
msg = r"replace\(\) got an unexpected keyword argument"
with pytest.raises(TypeError, match=msg):
ts.replace(foo=5)
def test_replace_integer_args(self, tz_aware_fixture):
tz = tz_aware_fixture
# GH#14621, GH#7825
ts = Timestamp("2016-01-01 09:00:00.000000123", tz=tz)
msg = "value must be an integer, received <class 'float'> for hour"
with pytest.raises(ValueError, match=msg):
ts.replace(hour=0.1)
def test_replace_tzinfo_equiv_tz_localize_none(self):
# GH#14621, GH#7825
# assert conversion to naive is the same as replacing tzinfo with None
ts = Timestamp("2013-11-03 01:59:59.999999-0400", tz="US/Eastern")
assert ts.tz_localize(None) == ts.replace(tzinfo=None)
@td.skip_if_windows
def test_replace_tzinfo(self):
# GH#15683
dt = datetime(2016, 3, 27, 1)
tzinfo = pytz.timezone("CET").localize(dt, is_dst=False).tzinfo
result_dt = dt.replace(tzinfo=tzinfo)
result_pd = Timestamp(dt).replace(tzinfo=tzinfo)
# datetime.timestamp() converts in the local timezone
with tm.set_timezone("UTC"):
assert result_dt.timestamp() == result_pd.timestamp()
assert result_dt == result_pd
assert result_dt == result_pd.to_pydatetime()
result_dt = dt.replace(tzinfo=tzinfo).replace(tzinfo=None)
result_pd = Timestamp(dt).replace(tzinfo=tzinfo).replace(tzinfo=None)
# datetime.timestamp() converts in the local timezone
with tm.set_timezone("UTC"):
assert result_dt.timestamp() == result_pd.timestamp()
assert result_dt == result_pd
assert result_dt == result_pd.to_pydatetime()
@pytest.mark.parametrize(
"tz, normalize",
[
(pytz.timezone("US/Eastern"), lambda x: x.tzinfo.normalize(x)),
(gettz("US/Eastern"), lambda x: x),
],
)
def test_replace_across_dst(self, tz, normalize):
# GH#18319 check that 1) timezone is correctly normalized and
# 2) that hour is not incorrectly changed by this normalization
ts_naive = Timestamp("2017-12-03 16:03:30")
ts_aware = conversion.localize_pydatetime(ts_naive, tz)
# Preliminary sanity-check
assert ts_aware == normalize(ts_aware)
# Replace across DST boundary
ts2 = ts_aware.replace(month=6)
# Check that `replace` preserves hour literal
assert (ts2.hour, ts2.minute) == (ts_aware.hour, ts_aware.minute)
# Check that post-replace object is appropriately normalized
ts2b = normalize(ts2)
assert ts2 == ts2b
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_replace_dst_border(self, unit):
# Gh 7825
t = Timestamp("2013-11-3", tz="America/Chicago").as_unit(unit)
result = t.replace(hour=3)
expected = Timestamp("2013-11-3 03:00:00", tz="America/Chicago")
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
@pytest.mark.parametrize("fold", [0, 1])
@pytest.mark.parametrize("tz", ["dateutil/Europe/London", "Europe/London"])
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_replace_dst_fold(self, fold, tz, unit):
# GH 25017
d = datetime(2019, 10, 27, 2, 30)
ts = Timestamp(d, tz=tz).as_unit(unit)
result = ts.replace(hour=1, fold=fold)
expected = Timestamp(datetime(2019, 10, 27, 1, 30)).tz_localize(
tz, ambiguous=not fold
)
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
@pytest.mark.parametrize("fold", [0, 1])
def test_replace_preserves_fold(self, fold):
# GH#37610. Check that replace preserves Timestamp fold property
tz = gettz("Europe/Moscow")
ts = Timestamp(
year=2009, month=10, day=25, hour=2, minute=30, fold=fold, tzinfo=tz
)
ts_replaced = ts.replace(second=1)
assert ts_replaced.fold == fold

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from hypothesis import (
given,
strategies as st,
)
import numpy as np
import pytest
import pytz
from pandas._libs import lib
from pandas._libs.tslibs import (
NaT,
OutOfBoundsDatetime,
Timedelta,
Timestamp,
iNaT,
to_offset,
)
from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
from pandas._libs.tslibs.period import INVALID_FREQ_ERR_MSG
import pandas._testing as tm
class TestTimestampRound:
def test_round_division_by_zero_raises(self):
ts = Timestamp("2016-01-01")
msg = "Division by zero in rounding"
with pytest.raises(ValueError, match=msg):
ts.round("0ns")
@pytest.mark.parametrize(
"timestamp, freq, expected",
[
("20130101 09:10:11", "D", "20130101"),
("20130101 19:10:11", "D", "20130102"),
("20130201 12:00:00", "D", "20130202"),
("20130104 12:00:00", "D", "20130105"),
("2000-01-05 05:09:15.13", "D", "2000-01-05 00:00:00"),
("2000-01-05 05:09:15.13", "h", "2000-01-05 05:00:00"),
("2000-01-05 05:09:15.13", "s", "2000-01-05 05:09:15"),
],
)
def test_round_frequencies(self, timestamp, freq, expected):
dt = Timestamp(timestamp)
result = dt.round(freq)
expected = Timestamp(expected)
assert result == expected
def test_round_tzaware(self):
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
def test_round_30min(self):
# round
dt = Timestamp("20130104 12:32:00")
result = dt.round("30Min")
expected = Timestamp("20130104 12:30:00")
assert result == expected
def test_round_subsecond(self):
# GH#14440 & GH#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
def test_round_nonstandard_freq(self):
with tm.assert_produces_warning(False):
Timestamp("2016-10-17 12:00:00.001501031").round("1010ns")
def test_round_invalid_arg(self):
stamp = Timestamp("2000-01-05 05:09:15.13")
with pytest.raises(ValueError, match=INVALID_FREQ_ERR_MSG):
stamp.round("foo")
@pytest.mark.parametrize(
"test_input, rounder, freq, expected",
[
("2117-01-01 00:00:45", "floor", "15s", "2117-01-01 00:00:45"),
("2117-01-01 00:00:45", "ceil", "15s", "2117-01-01 00:00:45"),
(
"2117-01-01 00:00:45.000000012",
"floor",
"10ns",
"2117-01-01 00:00:45.000000010",
),
(
"1823-01-01 00:00:01.000000012",
"ceil",
"10ns",
"1823-01-01 00:00:01.000000020",
),
("1823-01-01 00:00:01", "floor", "1s", "1823-01-01 00:00:01"),
("1823-01-01 00:00:01", "ceil", "1s", "1823-01-01 00:00:01"),
("NaT", "floor", "1s", "NaT"),
("NaT", "ceil", "1s", "NaT"),
],
)
def test_ceil_floor_edge(self, test_input, rounder, freq, expected):
dt = Timestamp(test_input)
func = getattr(dt, rounder)
result = func(freq)
if dt is NaT:
assert result is NaT
else:
expected = Timestamp(expected)
assert result == expected
@pytest.mark.parametrize(
"test_input, freq, expected",
[
("2018-01-01 00:02:06", "2s", "2018-01-01 00:02:06"),
("2018-01-01 00:02:00", "2min", "2018-01-01 00:02:00"),
("2018-01-01 00:04:00", "4min", "2018-01-01 00:04:00"),
("2018-01-01 00:15:00", "15min", "2018-01-01 00:15:00"),
("2018-01-01 00:20:00", "20min", "2018-01-01 00:20:00"),
("2018-01-01 03:00:00", "3h", "2018-01-01 03:00:00"),
],
)
@pytest.mark.parametrize("rounder", ["ceil", "floor", "round"])
def test_round_minute_freq(self, test_input, freq, expected, rounder):
# Ensure timestamps that shouldn't round dont!
# GH#21262
dt = Timestamp(test_input)
expected = Timestamp(expected)
func = getattr(dt, rounder)
result = func(freq)
assert result == expected
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_ceil(self, unit):
dt = Timestamp("20130101 09:10:11").as_unit(unit)
result = dt.ceil("D")
expected = Timestamp("20130102")
assert result == expected
assert result._creso == dt._creso
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_floor(self, unit):
dt = Timestamp("20130101 09:10:11").as_unit(unit)
result = dt.floor("D")
expected = Timestamp("20130101")
assert result == expected
assert result._creso == dt._creso
@pytest.mark.parametrize("method", ["ceil", "round", "floor"])
@pytest.mark.parametrize(
"unit",
["ns", "us", "ms", "s"],
)
def test_round_dst_border_ambiguous(self, method, unit):
# GH 18946 round near "fall back" DST
ts = Timestamp("2017-10-29 00:00:00", tz="UTC").tz_convert("Europe/Madrid")
ts = ts.as_unit(unit)
#
result = getattr(ts, method)("h", ambiguous=True)
assert result == ts
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
result = getattr(ts, method)("h", ambiguous=False)
expected = Timestamp("2017-10-29 01:00:00", tz="UTC").tz_convert(
"Europe/Madrid"
)
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
result = getattr(ts, method)("h", ambiguous="NaT")
assert result is NaT
msg = "Cannot infer dst time"
with pytest.raises(pytz.AmbiguousTimeError, match=msg):
getattr(ts, method)("h", ambiguous="raise")
@pytest.mark.parametrize(
"method, ts_str, freq",
[
["ceil", "2018-03-11 01:59:00-0600", "5min"],
["round", "2018-03-11 01:59:00-0600", "5min"],
["floor", "2018-03-11 03:01:00-0500", "2h"],
],
)
@pytest.mark.parametrize(
"unit",
["ns", "us", "ms", "s"],
)
def test_round_dst_border_nonexistent(self, method, ts_str, freq, unit):
# GH 23324 round near "spring forward" DST
ts = Timestamp(ts_str, tz="America/Chicago").as_unit(unit)
result = getattr(ts, method)(freq, nonexistent="shift_forward")
expected = Timestamp("2018-03-11 03:00:00", tz="America/Chicago")
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
result = getattr(ts, method)(freq, nonexistent="NaT")
assert result is NaT
msg = "2018-03-11 02:00:00"
with pytest.raises(pytz.NonExistentTimeError, match=msg):
getattr(ts, method)(freq, nonexistent="raise")
@pytest.mark.parametrize(
"timestamp",
[
"2018-01-01 0:0:0.124999360",
"2018-01-01 0:0:0.125000367",
"2018-01-01 0:0:0.125500",
"2018-01-01 0:0:0.126500",
"2018-01-01 12:00:00",
"2019-01-01 12:00:00",
],
)
@pytest.mark.parametrize(
"freq",
[
"2ns",
"3ns",
"4ns",
"5ns",
"6ns",
"7ns",
"250ns",
"500ns",
"750ns",
"1us",
"19us",
"250us",
"500us",
"750us",
"1s",
"2s",
"3s",
"1D",
],
)
def test_round_int64(self, timestamp, freq):
# check that all rounding modes are accurate to int64 precision
# see GH#22591
dt = Timestamp(timestamp).as_unit("ns")
unit = to_offset(freq).nanos
# test floor
result = dt.floor(freq)
assert result._value % unit == 0, f"floor not a {freq} multiple"
assert 0 <= dt._value - result._value < unit, "floor error"
# test ceil
result = dt.ceil(freq)
assert result._value % unit == 0, f"ceil not a {freq} multiple"
assert 0 <= result._value - dt._value < unit, "ceil error"
# test round
result = dt.round(freq)
assert result._value % unit == 0, f"round not a {freq} multiple"
assert abs(result._value - dt._value) <= unit // 2, "round error"
if unit % 2 == 0 and abs(result._value - dt._value) == unit // 2:
# round half to even
assert result._value // unit % 2 == 0, "round half to even error"
def test_round_implementation_bounds(self):
# See also: analogous test for Timedelta
result = Timestamp.min.ceil("s")
expected = Timestamp(1677, 9, 21, 0, 12, 44)
assert result == expected
result = Timestamp.max.floor("s")
expected = Timestamp.max - Timedelta(854775807)
assert result == expected
msg = "Cannot round 1677-09-21 00:12:43.145224193 to freq=<Second>"
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.min.floor("s")
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.min.round("s")
msg = "Cannot round 2262-04-11 23:47:16.854775807 to freq=<Second>"
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.max.ceil("s")
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.max.round("s")
@given(val=st.integers(iNaT + 1, lib.i8max))
@pytest.mark.parametrize(
"method", [Timestamp.round, Timestamp.floor, Timestamp.ceil]
)
def test_round_sanity(self, val, method):
cls = Timestamp
err_cls = OutOfBoundsDatetime
val = np.int64(val)
ts = cls(val)
def checker(ts, nanos, unit):
# First check that we do raise in cases where we should
if nanos == 1:
pass
else:
div, mod = divmod(ts._value, nanos)
diff = int(nanos - mod)
lb = ts._value - mod
assert lb <= ts._value # i.e. no overflows with python ints
ub = ts._value + diff
assert ub > ts._value # i.e. no overflows with python ints
msg = "without overflow"
if mod == 0:
# We should never be raising in this
pass
elif method is cls.ceil:
if ub > cls.max._value:
with pytest.raises(err_cls, match=msg):
method(ts, unit)
return
elif method is cls.floor:
if lb < cls.min._value:
with pytest.raises(err_cls, match=msg):
method(ts, unit)
return
elif mod >= diff:
if ub > cls.max._value:
with pytest.raises(err_cls, match=msg):
method(ts, unit)
return
elif lb < cls.min._value:
with pytest.raises(err_cls, match=msg):
method(ts, unit)
return
res = method(ts, unit)
td = res - ts
diff = abs(td._value)
assert diff < nanos
assert res._value % nanos == 0
if method is cls.round:
assert diff <= nanos / 2
elif method is cls.floor:
assert res <= ts
elif method is cls.ceil:
assert res >= ts
nanos = 1
checker(ts, nanos, "ns")
nanos = 1000
checker(ts, nanos, "us")
nanos = 1_000_000
checker(ts, nanos, "ms")
nanos = 1_000_000_000
checker(ts, nanos, "s")
nanos = 60 * 1_000_000_000
checker(ts, nanos, "min")
nanos = 60 * 60 * 1_000_000_000
checker(ts, nanos, "h")
nanos = 24 * 60 * 60 * 1_000_000_000
checker(ts, nanos, "D")

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# NB: This is for the Timestamp.timestamp *method* specifically, not
# the Timestamp class in general.
from pytz import utc
from pandas._libs.tslibs import Timestamp
import pandas.util._test_decorators as td
import pandas._testing as tm
class TestTimestampMethod:
@td.skip_if_windows
def test_timestamp(self, fixed_now_ts):
# GH#17329
# tz-naive --> treat it as if it were UTC for purposes of timestamp()
ts = fixed_now_ts
uts = ts.replace(tzinfo=utc)
assert ts.timestamp() == uts.timestamp()
tsc = Timestamp("2014-10-11 11:00:01.12345678", tz="US/Central")
utsc = tsc.tz_convert("UTC")
# utsc is a different representation of the same time
assert tsc.timestamp() == utsc.timestamp()
# datetime.timestamp() converts in the local timezone
with tm.set_timezone("UTC"):
# should agree with datetime.timestamp method
dt = ts.to_pydatetime()
assert dt.timestamp() == ts.timestamp()

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from pandas import Timestamp
class TestTimestampToJulianDate:
def test_compare_1700(self):
ts = Timestamp("1700-06-23")
res = ts.to_julian_date()
assert res == 2_342_145.5
def test_compare_2000(self):
ts = Timestamp("2000-04-12")
res = ts.to_julian_date()
assert res == 2_451_646.5
def test_compare_2100(self):
ts = Timestamp("2100-08-12")
res = ts.to_julian_date()
assert res == 2_488_292.5
def test_compare_hour01(self):
ts = Timestamp("2000-08-12T01:00:00")
res = ts.to_julian_date()
assert res == 2_451_768.5416666666666666
def test_compare_hour13(self):
ts = Timestamp("2000-08-12T13:00:00")
res = ts.to_julian_date()
assert res == 2_451_769.0416666666666666

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from datetime import (
datetime,
timedelta,
)
import pytz
from pandas._libs.tslibs.timezones import dateutil_gettz as gettz
import pandas.util._test_decorators as td
from pandas import Timestamp
import pandas._testing as tm
class TestTimestampToPyDatetime:
def test_to_pydatetime_fold(self):
# GH#45087
tzstr = "dateutil/usr/share/zoneinfo/America/Chicago"
ts = Timestamp(year=2013, month=11, day=3, hour=1, minute=0, fold=1, tz=tzstr)
dt = ts.to_pydatetime()
assert dt.fold == 1
def test_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):
expected = datetime(2011, 1, 1, 9, 0, 0, 123456)
result = ts.to_pydatetime()
assert result == expected
def test_timestamp_to_datetime(self):
stamp = Timestamp("20090415", tz="US/Eastern")
dtval = stamp.to_pydatetime()
assert stamp == dtval
assert stamp.tzinfo == dtval.tzinfo
def test_timestamp_to_pydatetime_dateutil(self):
stamp = Timestamp("20090415", tz="dateutil/US/Eastern")
dtval = stamp.to_pydatetime()
assert stamp == dtval
assert stamp.tzinfo == dtval.tzinfo
def test_timestamp_to_pydatetime_explicit_pytz(self):
stamp = Timestamp("20090415", tz=pytz.timezone("US/Eastern"))
dtval = stamp.to_pydatetime()
assert stamp == dtval
assert stamp.tzinfo == dtval.tzinfo
@td.skip_if_windows
def test_timestamp_to_pydatetime_explicit_dateutil(self):
stamp = Timestamp("20090415", tz=gettz("US/Eastern"))
dtval = stamp.to_pydatetime()
assert stamp == dtval
assert stamp.tzinfo == dtval.tzinfo
def test_to_pydatetime_bijective(self):
# Ensure that converting to datetime and back only loses precision
# by going from nanoseconds to microseconds.
exp_warning = None if Timestamp.max.nanosecond == 0 else UserWarning
with tm.assert_produces_warning(exp_warning):
pydt_max = Timestamp.max.to_pydatetime()
assert (
Timestamp(pydt_max).as_unit("ns")._value / 1000
== Timestamp.max._value / 1000
)
exp_warning = None if Timestamp.min.nanosecond == 0 else UserWarning
with tm.assert_produces_warning(exp_warning):
pydt_min = Timestamp.min.to_pydatetime()
# The next assertion can be enabled once GH#39221 is merged
# assert pydt_min < Timestamp.min # this is bc nanos are dropped
tdus = timedelta(microseconds=1)
assert pydt_min + tdus > Timestamp.min
assert (
Timestamp(pydt_min + tdus).as_unit("ns")._value / 1000
== Timestamp.min._value / 1000
)

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import dateutil
import pytest
from pandas._libs.tslibs import timezones
import pandas.util._test_decorators as td
from pandas import Timestamp
class TestTimestampTZConvert:
@pytest.mark.parametrize("tzstr", ["US/Eastern", "dateutil/US/Eastern"])
def test_astimezone(self, tzstr):
# astimezone is an alias for tz_convert, so keep it with
# the tz_convert tests
utcdate = Timestamp("3/11/2012 22:00", tz="UTC")
expected = utcdate.tz_convert(tzstr)
result = utcdate.astimezone(tzstr)
assert expected == result
assert isinstance(result, Timestamp)
@pytest.mark.parametrize(
"stamp",
[
"2014-02-01 09:00",
"2014-07-08 09:00",
"2014-11-01 17:00",
"2014-11-05 00:00",
],
)
def test_tz_convert_roundtrip(self, stamp, tz_aware_fixture):
tz = tz_aware_fixture
ts = Timestamp(stamp, tz="UTC")
converted = ts.tz_convert(tz)
reset = converted.tz_convert(None)
assert reset == Timestamp(stamp)
assert reset.tzinfo is None
assert reset == converted.tz_convert("UTC").tz_localize(None)
@td.skip_if_windows
def test_tz_convert_utc_with_system_utc(self):
# from system utc to real utc
ts = Timestamp("2001-01-05 11:56", tz=timezones.maybe_get_tz("dateutil/UTC"))
# check that the time hasn't changed.
assert ts == ts.tz_convert(dateutil.tz.tzutc())
# from system utc to real utc
ts = Timestamp("2001-01-05 11:56", tz=timezones.maybe_get_tz("dateutil/UTC"))
# check that the time hasn't changed.
assert ts == ts.tz_convert(dateutil.tz.tzutc())

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from datetime import timedelta
import re
from dateutil.tz import gettz
import pytest
import pytz
from pytz.exceptions import (
AmbiguousTimeError,
NonExistentTimeError,
)
from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
from pandas.errors import OutOfBoundsDatetime
from pandas import (
NaT,
Timestamp,
)
try:
from zoneinfo import ZoneInfo
except ImportError:
# Cannot assign to a type
ZoneInfo = None # type: ignore[misc, assignment]
class TestTimestampTZLocalize:
@pytest.mark.skip_ubsan
def test_tz_localize_pushes_out_of_bounds(self):
# GH#12677
# tz_localize that pushes away from the boundary is OK
msg = (
f"Converting {Timestamp.min.strftime('%Y-%m-%d %H:%M:%S')} "
f"underflows past {Timestamp.min}"
)
pac = Timestamp.min.tz_localize("US/Pacific")
assert pac._value > Timestamp.min._value
pac.tz_convert("Asia/Tokyo") # tz_convert doesn't change value
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.min.tz_localize("Asia/Tokyo")
# tz_localize that pushes away from the boundary is OK
msg = (
f"Converting {Timestamp.max.strftime('%Y-%m-%d %H:%M:%S')} "
f"overflows past {Timestamp.max}"
)
tokyo = Timestamp.max.tz_localize("Asia/Tokyo")
assert tokyo._value < Timestamp.max._value
tokyo.tz_convert("US/Pacific") # tz_convert doesn't change value
with pytest.raises(OutOfBoundsDatetime, match=msg):
Timestamp.max.tz_localize("US/Pacific")
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_tz_localize_ambiguous_bool(self, unit):
# make sure that we are correctly accepting bool values as ambiguous
# GH#14402
ts = Timestamp("2015-11-01 01:00:03").as_unit(unit)
expected0 = Timestamp("2015-11-01 01:00:03-0500", tz="US/Central")
expected1 = Timestamp("2015-11-01 01:00:03-0600", tz="US/Central")
msg = "Cannot infer dst time from 2015-11-01 01:00:03"
with pytest.raises(pytz.AmbiguousTimeError, match=msg):
ts.tz_localize("US/Central")
with pytest.raises(pytz.AmbiguousTimeError, match=msg):
ts.tz_localize("dateutil/US/Central")
if ZoneInfo is not None:
try:
tz = ZoneInfo("US/Central")
except KeyError:
# no tzdata
pass
else:
with pytest.raises(pytz.AmbiguousTimeError, match=msg):
ts.tz_localize(tz)
result = ts.tz_localize("US/Central", ambiguous=True)
assert result == expected0
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
result = ts.tz_localize("US/Central", ambiguous=False)
assert result == expected1
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
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)
assert ts_no_dst._value - ts_dst._value == 3600
msg = re.escape(
"'ambiguous' parameter must be one of: "
"True, False, 'NaT', 'raise' (default)"
)
with pytest.raises(ValueError, match=msg):
ts.tz_localize("US/Eastern", ambiguous="infer")
# GH#8025
msg = "Cannot localize tz-aware Timestamp, use tz_convert for conversions"
with pytest.raises(TypeError, match=msg):
Timestamp("2011-01-01", tz="US/Eastern").tz_localize("Asia/Tokyo")
msg = "Cannot convert tz-naive Timestamp, use tz_localize to localize"
with pytest.raises(TypeError, match=msg):
Timestamp("2011-01-01").tz_convert("Asia/Tokyo")
@pytest.mark.parametrize(
"stamp, tz",
[
("2015-03-08 02:00", "US/Eastern"),
("2015-03-08 02:30", "US/Pacific"),
("2015-03-29 02:00", "Europe/Paris"),
("2015-03-29 02:30", "Europe/Belgrade"),
],
)
def test_tz_localize_nonexistent(self, stamp, tz):
# GH#13057
ts = Timestamp(stamp)
with pytest.raises(NonExistentTimeError, match=stamp):
ts.tz_localize(tz)
# GH 22644
with pytest.raises(NonExistentTimeError, match=stamp):
ts.tz_localize(tz, nonexistent="raise")
assert ts.tz_localize(tz, nonexistent="NaT") is NaT
@pytest.mark.parametrize(
"stamp, tz, forward_expected, backward_expected",
[
(
"2015-03-29 02:00:00",
"Europe/Warsaw",
"2015-03-29 03:00:00",
"2015-03-29 01:59:59",
), # utc+1 -> utc+2
(
"2023-03-12 02:00:00",
"America/Los_Angeles",
"2023-03-12 03:00:00",
"2023-03-12 01:59:59",
), # utc-8 -> utc-7
(
"2023-03-26 01:00:00",
"Europe/London",
"2023-03-26 02:00:00",
"2023-03-26 00:59:59",
), # utc+0 -> utc+1
(
"2023-03-26 00:00:00",
"Atlantic/Azores",
"2023-03-26 01:00:00",
"2023-03-25 23:59:59",
), # utc-1 -> utc+0
],
)
def test_tz_localize_nonexistent_shift(
self, stamp, tz, forward_expected, backward_expected
):
ts = Timestamp(stamp)
forward_ts = ts.tz_localize(tz, nonexistent="shift_forward")
assert forward_ts == Timestamp(forward_expected, tz=tz)
backward_ts = ts.tz_localize(tz, nonexistent="shift_backward")
assert backward_ts == Timestamp(backward_expected, tz=tz)
def test_tz_localize_ambiguous_raise(self):
# GH#13057
ts = Timestamp("2015-11-1 01:00")
msg = "Cannot infer dst time from 2015-11-01 01:00:00,"
with pytest.raises(AmbiguousTimeError, match=msg):
ts.tz_localize("US/Pacific", ambiguous="raise")
def test_tz_localize_nonexistent_invalid_arg(self, warsaw):
# GH 22644
tz = warsaw
ts = Timestamp("2015-03-29 02:00:00")
msg = (
"The nonexistent argument must be one of 'raise', 'NaT', "
"'shift_forward', 'shift_backward' or a timedelta object"
)
with pytest.raises(ValueError, match=msg):
ts.tz_localize(tz, nonexistent="foo")
@pytest.mark.parametrize(
"stamp",
[
"2014-02-01 09:00",
"2014-07-08 09:00",
"2014-11-01 17:00",
"2014-11-05 00:00",
],
)
def test_tz_localize_roundtrip(self, stamp, tz_aware_fixture):
tz = tz_aware_fixture
ts = Timestamp(stamp)
localized = ts.tz_localize(tz)
assert localized == Timestamp(stamp, tz=tz)
msg = "Cannot localize tz-aware Timestamp"
with pytest.raises(TypeError, match=msg):
localized.tz_localize(tz)
reset = localized.tz_localize(None)
assert reset == ts
assert reset.tzinfo is None
def test_tz_localize_ambiguous_compat(self):
# validate that pytz and dateutil are compat for dst
# when the transition happens
naive = Timestamp("2013-10-27 01:00:00")
pytz_zone = "Europe/London"
dateutil_zone = "dateutil/Europe/London"
result_pytz = naive.tz_localize(pytz_zone, ambiguous=False)
result_dateutil = naive.tz_localize(dateutil_zone, ambiguous=False)
assert result_pytz._value == result_dateutil._value
assert result_pytz._value == 1382835600
# fixed ambiguous behavior
# see gh-14621, GH#45087
assert result_pytz.to_pydatetime().tzname() == "GMT"
assert result_dateutil.to_pydatetime().tzname() == "GMT"
assert str(result_pytz) == str(result_dateutil)
# 1 hour difference
result_pytz = naive.tz_localize(pytz_zone, ambiguous=True)
result_dateutil = naive.tz_localize(dateutil_zone, ambiguous=True)
assert result_pytz._value == result_dateutil._value
assert result_pytz._value == 1382832000
# see gh-14621
assert str(result_pytz) == str(result_dateutil)
assert (
result_pytz.to_pydatetime().tzname()
== result_dateutil.to_pydatetime().tzname()
)
@pytest.mark.parametrize(
"tz",
[
pytz.timezone("US/Eastern"),
gettz("US/Eastern"),
"US/Eastern",
"dateutil/US/Eastern",
],
)
def test_timestamp_tz_localize(self, tz):
stamp = Timestamp("3/11/2012 04:00")
result = stamp.tz_localize(tz)
expected = Timestamp("3/11/2012 04:00", tz=tz)
assert result.hour == expected.hour
assert result == expected
@pytest.mark.parametrize(
"start_ts, tz, end_ts, shift",
[
["2015-03-29 02:20:00", "Europe/Warsaw", "2015-03-29 03:00:00", "forward"],
[
"2015-03-29 02:20:00",
"Europe/Warsaw",
"2015-03-29 01:59:59.999999999",
"backward",
],
[
"2015-03-29 02:20:00",
"Europe/Warsaw",
"2015-03-29 03:20:00",
timedelta(hours=1),
],
[
"2015-03-29 02:20:00",
"Europe/Warsaw",
"2015-03-29 01:20:00",
timedelta(hours=-1),
],
["2018-03-11 02:33:00", "US/Pacific", "2018-03-11 03:00:00", "forward"],
[
"2018-03-11 02:33:00",
"US/Pacific",
"2018-03-11 01:59:59.999999999",
"backward",
],
[
"2018-03-11 02:33:00",
"US/Pacific",
"2018-03-11 03:33:00",
timedelta(hours=1),
],
[
"2018-03-11 02:33:00",
"US/Pacific",
"2018-03-11 01:33:00",
timedelta(hours=-1),
],
],
)
@pytest.mark.parametrize("tz_type", ["", "dateutil/"])
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_timestamp_tz_localize_nonexistent_shift(
self, start_ts, tz, end_ts, shift, tz_type, unit
):
# GH 8917, 24466
tz = tz_type + tz
if isinstance(shift, str):
shift = "shift_" + shift
ts = Timestamp(start_ts).as_unit(unit)
result = ts.tz_localize(tz, nonexistent=shift)
expected = Timestamp(end_ts).tz_localize(tz)
if unit == "us":
assert result == expected.replace(nanosecond=0)
elif unit == "ms":
micros = expected.microsecond - expected.microsecond % 1000
assert result == expected.replace(microsecond=micros, nanosecond=0)
elif unit == "s":
assert result == expected.replace(microsecond=0, nanosecond=0)
else:
assert result == expected
assert result._creso == getattr(NpyDatetimeUnit, f"NPY_FR_{unit}").value
@pytest.mark.parametrize("offset", [-1, 1])
def test_timestamp_tz_localize_nonexistent_shift_invalid(self, offset, warsaw):
# GH 8917, 24466
tz = warsaw
ts = Timestamp("2015-03-29 02:20:00")
msg = "The provided timedelta will relocalize on a nonexistent time"
with pytest.raises(ValueError, match=msg):
ts.tz_localize(tz, nonexistent=timedelta(seconds=offset))
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_timestamp_tz_localize_nonexistent_NaT(self, warsaw, unit):
# GH 8917
tz = warsaw
ts = Timestamp("2015-03-29 02:20:00").as_unit(unit)
result = ts.tz_localize(tz, nonexistent="NaT")
assert result is NaT
@pytest.mark.parametrize("unit", ["ns", "us", "ms", "s"])
def test_timestamp_tz_localize_nonexistent_raise(self, warsaw, unit):
# GH 8917
tz = warsaw
ts = Timestamp("2015-03-29 02:20:00").as_unit(unit)
msg = "2015-03-29 02:20:00"
with pytest.raises(pytz.NonExistentTimeError, match=msg):
ts.tz_localize(tz, nonexistent="raise")
msg = (
"The nonexistent argument must be one of 'raise', 'NaT', "
"'shift_forward', 'shift_backward' or a timedelta object"
)
with pytest.raises(ValueError, match=msg):
ts.tz_localize(tz, nonexistent="foo")