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CLN: Use C-API for datetime.date #33222

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Merged
merged 3 commits into from
Apr 2, 2020
Merged

CLN: Use C-API for datetime.date #33222

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f4e64ec
CLN: Use C-API for datetime.date
Mar 31, 2020
ba05626
Cimporting cpython.datetime as datetime
Apr 1, 2020
e4a17c3
Merge remote-tracking branch 'upstream/master' into CLN-CAPI-datetime
Apr 1, 2020
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21 changes: 11 additions & 10 deletions pandas/_libs/tslibs/strptime.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,6 @@ import time
import locale
import calendar
import re
import datetime
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I think can just cimport cpython.datetime as datetime to minimize changes no? Didn't we move away from the import pattern here already in #32459

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Good catch!

Somehow slipped away from me


from _thread import allocate_lock as _thread_allocate_lock

Expand All @@ -13,6 +12,8 @@ import pytz
import numpy as np
from numpy cimport int64_t

from cpython.datetime cimport date


from pandas._libs.tslibs.np_datetime cimport (
check_dts_bounds, dtstruct_to_dt64, npy_datetimestruct)
Expand Down Expand Up @@ -295,13 +296,13 @@ def array_strptime(object[:] values, object fmt, bint exact=True, errors='raise'
if julian == -1:
# Need to add 1 to result since first day of the year is 1, not
# 0.
ordinal = datetime.date(year, month, day).toordinal()
julian = ordinal - datetime.date(year, 1, 1).toordinal() + 1
ordinal = date(year, month, day).toordinal()
julian = ordinal - date(year, 1, 1).toordinal() + 1
else:
# Assume that if they bothered to include Julian day it will
# be accurate.
datetime_result = datetime.date.fromordinal(
(julian - 1) + datetime.date(year, 1, 1).toordinal())
datetime_result = date.fromordinal(
(julian - 1) + date(year, 1, 1).toordinal())
year = datetime_result.year
month = datetime_result.month
day = datetime_result.day
Expand All @@ -311,7 +312,7 @@ def array_strptime(object[:] values, object fmt, bint exact=True, errors='raise'
continue
raise
if weekday == -1:
weekday = datetime.date(year, month, day).weekday()
weekday = date(year, month, day).weekday()

dts.year = year
dts.month = month
Expand Down Expand Up @@ -649,7 +650,7 @@ cdef int _calc_julian_from_U_or_W(int year, int week_of_year,
cdef:
int first_weekday, week_0_length, days_to_week

first_weekday = datetime.date(year, 1, 1).weekday()
first_weekday = date(year, 1, 1).weekday()
# If we are dealing with the %U directive (week starts on Sunday), it's
# easier to just shift the view to Sunday being the first day of the
# week.
Expand Down Expand Up @@ -692,14 +693,14 @@ cdef (int, int) _calc_julian_from_V(int iso_year, int iso_week, int iso_weekday)
cdef:
int correction, ordinal

correction = datetime.date(iso_year, 1, 4).isoweekday() + 3
correction = date(iso_year, 1, 4).isoweekday() + 3
ordinal = (iso_week * 7) + iso_weekday - correction
# ordinal may be negative or 0 now, which means the date is in the previous
# calendar year
if ordinal < 1:
ordinal += datetime.date(iso_year, 1, 1).toordinal()
ordinal += date(iso_year, 1, 1).toordinal()
iso_year -= 1
ordinal -= datetime.date(iso_year, 1, 1).toordinal()
ordinal -= date(iso_year, 1, 1).toordinal()
return iso_year, ordinal


Expand Down