a oe@sdZdZddlZddlZddlZddlZddlZddlZddlm Z ddl Z e e Z GdddeZGdddeZGd d d eZGd d d eZGd ddeZGdddejZGdddeZddZddZddZGdddeZeZddZGdddeZdS)uX" win32timezone: Module for handling datetime.tzinfo time zones using the windows registry for time zone information. The time zone names are dependent on the registry entries defined by the operating system. This module may be tested using the doctest module. Written by Jason R. Coombs (jaraco@jaraco.com). Copyright © 2003-2012. All Rights Reserved. This module is licenced for use in Mark Hammond's pywin32 library under the same terms as the pywin32 library. To use this time zone module with the datetime module, simply pass the TimeZoneInfo object to the datetime constructor. For example, >>> import win32timezone, datetime >>> assert 'Mountain Standard Time' in win32timezone.TimeZoneInfo.get_sorted_time_zone_names() >>> MST = win32timezone.TimeZoneInfo('Mountain Standard Time') >>> now = datetime.datetime.now(MST) The now object is now a time-zone aware object, and daylight savings- aware methods may be called on it. >>> now.utcoffset() in (datetime.timedelta(-1, 61200), datetime.timedelta(-1, 64800)) True (note that the result of utcoffset call will be different based on when now was generated, unless standard time is always used) >>> now = datetime.datetime.now(TimeZoneInfo('Mountain Standard Time', True)) >>> now.utcoffset() datetime.timedelta(days=-1, seconds=61200) >>> aug2 = datetime.datetime(2003, 8, 2, tzinfo = MST) >>> tuple(aug2.utctimetuple()) (2003, 8, 2, 6, 0, 0, 5, 214, 0) >>> nov2 = datetime.datetime(2003, 11, 25, tzinfo = MST) >>> tuple(nov2.utctimetuple()) (2003, 11, 25, 7, 0, 0, 1, 329, 0) To convert from one timezone to another, just use the astimezone method. >>> aug2.isoformat() '2003-08-02T00:00:00-06:00' >>> aug2est = aug2.astimezone(win32timezone.TimeZoneInfo('Eastern Standard Time')) >>> aug2est.isoformat() '2003-08-02T02:00:00-04:00' calling the displayName member will return the display name as set in the registry. >>> est = win32timezone.TimeZoneInfo('Eastern Standard Time') >>> str(est.displayName) '(UTC-05:00) Eastern Time (US & Canada)' >>> gmt = win32timezone.TimeZoneInfo('GMT Standard Time', True) >>> str(gmt.displayName) '(UTC+00:00) Dublin, Edinburgh, Lisbon, London' To get the complete list of available time zone keys, >>> zones = win32timezone.TimeZoneInfo.get_all_time_zones() If you want to get them in an order that's sorted longitudinally >>> zones = win32timezone.TimeZoneInfo.get_sorted_time_zones() TimeZoneInfo now supports being pickled and comparison >>> import pickle >>> tz = win32timezone.TimeZoneInfo('China Standard Time') >>> tz == pickle.loads(pickle.dumps(tz)) True It's possible to construct a TimeZoneInfo from a TimeZoneDescription including the currently-defined zone. >>> tz = win32timezone.TimeZoneInfo(TimeZoneDefinition.current()) >>> tz == pickle.loads(pickle.dumps(tz)) True >>> aest = win32timezone.TimeZoneInfo('AUS Eastern Standard Time') >>> est = win32timezone.TimeZoneInfo('E. Australia Standard Time') >>> dt = datetime.datetime(2006, 11, 11, 1, 0, 0, tzinfo = aest) >>> estdt = dt.astimezone(est) >>> estdt.strftime('%Y-%m-%d %H:%M:%S') '2006-11-11 00:00:00' >>> dt = datetime.datetime(2007, 1, 12, 1, 0, 0, tzinfo = aest) >>> estdt = dt.astimezone(est) >>> estdt.strftime('%Y-%m-%d %H:%M:%S') '2007-01-12 00:00:00' >>> dt = datetime.datetime(2007, 6, 13, 1, 0, 0, tzinfo = aest) >>> estdt = dt.astimezone(est) >>> estdt.strftime('%Y-%m-%d %H:%M:%S') '2007-06-13 01:00:00' Microsoft now has a patch for handling time zones in 2007 (see http://support.microsoft.com/gp/cp_dst) As a result, patched systems will give an incorrect result for dates prior to the designated year except for Vista and its successors, which have dynamic time zone support. >>> nov2_pre_change = datetime.datetime(2003, 11, 2, tzinfo = MST) >>> old_response = (2003, 11, 2, 7, 0, 0, 6, 306, 0) >>> incorrect_patch_response = (2003, 11, 2, 6, 0, 0, 6, 306, 0) >>> pre_response = nov2_pre_change.utctimetuple() >>> pre_response in (old_response, incorrect_patch_response) True Furthermore, unpatched systems pre-Vista will give an incorrect result for dates after 2007. >>> nov2_post_change = datetime.datetime(2007, 11, 2, tzinfo = MST) >>> incorrect_unpatched_response = (2007, 11, 2, 7, 0, 0, 4, 306, 0) >>> new_response = (2007, 11, 2, 6, 0, 0, 4, 306, 0) >>> post_response = nov2_post_change.utctimetuple() >>> post_response in (new_response, incorrect_unpatched_response) True There is a function you can call to get some capabilities of the time zone data. >>> caps = GetTZCapabilities() >>> isinstance(caps, dict) True >>> 'MissingTZPatch' in caps True >>> 'DynamicTZSupport' in caps True >>> both_dates_correct = (pre_response == old_response and post_response == new_response) >>> old_dates_wrong = (pre_response == incorrect_patch_response) >>> new_dates_wrong = (post_response == incorrect_unpatched_response) >>> caps['DynamicTZSupport'] == both_dates_correct True >>> (not caps['DynamicTZSupport'] and caps['MissingTZPatch']) == new_dates_wrong True >>> (not caps['DynamicTZSupport'] and not caps['MissingTZPatch']) == old_dates_wrong True This test helps ensure language support for unicode characters >>> x = TIME_ZONE_INFORMATION(0, u'français') Test conversion from one time zone to another at a DST boundary =============================================================== >>> tz_hi = TimeZoneInfo('Hawaiian Standard Time') >>> tz_pac = TimeZoneInfo('Pacific Standard Time') >>> time_before = datetime.datetime(2011, 11, 5, 15, 59, 59, tzinfo=tz_hi) >>> tz_hi.utcoffset(time_before) datetime.timedelta(days=-1, seconds=50400) >>> tz_hi.dst(time_before) datetime.timedelta(0) Hawaii doesn't need dynamic TZ info >>> getattr(tz_hi, 'dynamicInfo', None) Here's a time that gave some trouble as reported in #3523104 because one minute later, the equivalent UTC time changes from DST in the U.S. >>> dt_hi = datetime.datetime(2011, 11, 5, 15, 59, 59, 0, tzinfo=tz_hi) >>> dt_hi.timetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=5, tm_hour=15, tm_min=59, tm_sec=59, tm_wday=5, tm_yday=309, tm_isdst=0) >>> dt_hi.utctimetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=6, tm_hour=1, tm_min=59, tm_sec=59, tm_wday=6, tm_yday=310, tm_isdst=0) Convert the time to pacific time. >>> dt_pac = dt_hi.astimezone(tz_pac) >>> dt_pac.timetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=5, tm_hour=18, tm_min=59, tm_sec=59, tm_wday=5, tm_yday=309, tm_isdst=1) Notice that the UTC time is almost 2am. >>> dt_pac.utctimetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=6, tm_hour=1, tm_min=59, tm_sec=59, tm_wday=6, tm_yday=310, tm_isdst=0) Now do the same tests one minute later in Hawaii. >>> time_after = datetime.datetime(2011, 11, 5, 16, 0, 0, 0, tzinfo=tz_hi) >>> tz_hi.utcoffset(time_after) datetime.timedelta(days=-1, seconds=50400) >>> tz_hi.dst(time_before) datetime.timedelta(0) >>> dt_hi = datetime.datetime(2011, 11, 5, 16, 0, 0, 0, tzinfo=tz_hi) >>> print(dt_hi.timetuple()) time.struct_time(tm_year=2011, tm_mon=11, tm_mday=5, tm_hour=16, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=309, tm_isdst=0) >>> print(dt_hi.utctimetuple()) time.struct_time(tm_year=2011, tm_mon=11, tm_mday=6, tm_hour=2, tm_min=0, tm_sec=0, tm_wday=6, tm_yday=310, tm_isdst=0) According to the docs, this is what astimezone does. >>> utc = (dt_hi - dt_hi.utcoffset()).replace(tzinfo=tz_pac) >>> utc datetime.datetime(2011, 11, 6, 2, 0, tzinfo=TimeZoneInfo('Pacific Standard Time')) >>> tz_pac.fromutc(utc) == dt_hi.astimezone(tz_pac) True >>> tz_pac.fromutc(utc) datetime.datetime(2011, 11, 5, 19, 0, tzinfo=TimeZoneInfo('Pacific Standard Time')) Make sure the converted time is correct. >>> dt_pac = dt_hi.astimezone(tz_pac) >>> dt_pac.timetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=5, tm_hour=19, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=309, tm_isdst=1) >>> dt_pac.utctimetuple() time.struct_time(tm_year=2011, tm_mon=11, tm_mday=6, tm_hour=2, tm_min=0, tm_sec=0, tm_wday=6, tm_yday=310, tm_isdst=0) Check some internal methods >>> tz_pac._getStandardBias(datetime.datetime(2011, 1, 1)) datetime.timedelta(seconds=28800) >>> tz_pac._getDaylightBias(datetime.datetime(2011, 1, 1)) datetime.timedelta(seconds=25200) Test the offsets >>> offset = tz_pac.utcoffset(datetime.datetime(2011, 11, 6, 2, 0)) >>> offset == datetime.timedelta(hours=-8) True >>> dst_offset = tz_pac.dst(datetime.datetime(2011, 11, 6, 2, 0) + offset) >>> dst_offset == datetime.timedelta(hours=1) True >>> (offset + dst_offset) == datetime.timedelta(hours=-7) True Test offsets that occur right at the DST changeover >>> datetime.datetime.utcfromtimestamp(1320570000).replace( ... tzinfo=TimeZoneInfo.utc()).astimezone(tz_pac) datetime.datetime(2011, 11, 6, 1, 0, tzinfo=TimeZoneInfo('Pacific Standard Time')) z#Jason R. Coombs N)countc@s0eZdZdZddZddZddZdd ZdS) _SimpleStructNcOst|jD]\}\}}d}|t|kr.||}||vr>||}|durXt|ts\|f}nd}t|dkrt|d|r|d}n||}t|||q dS)Nr) enumerate_fields_len isinstancetuplesetattr)selfargskwinametypZdef_argZdef_valrr8C:\Program Files\Certbot\pkgs\win32\lib\win32timezone.py__init__s   z_SimpleStruct.__init__cCsdd|jDS)NcSsg|] }|dqS)rr).0frrr z-_SimpleStruct.field_names..)rr rrr field_namessz_SimpleStruct.field_namescCsLt|dsdS|j|jkrdS|jD]"\}}t||t||kr$dSq$dS)NrFT)hasattrrgetattr)r otherr_rrr__eq__s  z_SimpleStruct.__eq__cCs || SN)rr rrrr__ne__sz_SimpleStruct.__ne__)__name__ __module__ __qualname__rrrrr!rrrrrs  rc @s@eZdZdefdefdefdefdefdefdefdefgZd S) SYSTEMTIMEyearmonth day_of_weekdayhourminutesecond millisecondN)r"r#r$intrrrrrr%#sr%c@s:eZdZdefdefdefdefdefdefdefgZdS) TIME_ZONE_INFORMATIONbias standard_namestandard_start standard_bias daylight_namedaylight_start daylight_biasN)r"r#r$r.strr%rrrrrr/0sr/c@s"eZdZejdefdefgZdS)DYNAMIC_TIME_ZONE_INFORMATIONkey_nameZdynamic_daylight_time_disabledN)r"r#r$r/rr7boolrrrrr8<sr8cs~eZdZdZfddZdfdd Zfdd Zfd d Zed d Z ddZ ddZ ddZ ddZ eddZZS)TimeZoneDefinitionz A time zone definition class based on the win32 DYNAMIC_TIME_ZONE_INFORMATION structure. Describes a bias against UTC (bias), and two dates at which a separate additional bias applies (standard_bias and daylight_bias). c sztt|j|i|WdSttfy2Yn0z|j|i|WdSty\Yn0z|j|i|WdStyYn0td|jdS)z Try to construct a TimeZoneDefinition from a) [DYNAMIC_]TIME_ZONE_INFORMATION args b) another TimeZoneDefinition c) a byte structure (using _from_bytes) NzInvalid arguments for %s)superr;r TypeError ValueError$_TimeZoneDefinition__init_from_other$_TimeZoneDefinition__init_from_bytes __class__)r r kwargsrArrrLs   zTimeZoneDefinition.__init__Fc sfd}t||}|dd\}} } t|dd} t|dd} tt|||| | || | || dS)NZ3l8h8h )structunpackr%r<r;r) r bytesr1r4r9Zdaylight_disabledformat componentsr0r3r6r2r5rCrrZ__init_from_bytesgs   z$TimeZoneDefinition.__init_from_bytescsBt|tstd|D]"}tt|||}t|||qdS)NzNot a TIME_ZONE_INFORMATION)r r/r=rr<r;__getattribute__r )r rrvaluerCrrZ__init_from_others   z$TimeZoneDefinition.__init_from_othercs(tt||}d|vr$tj|d}|S)Nr0)Zminutes)r<r;rMdatetime timedelta)r attrrNrCrrrMs z#TimeZoneDefinition.__getattribute__cCstd\}}|||fS)z+Windows Platform SDK GetTimeZoneInformationT)win32apiZGetTimeZoneInformation)class_codetzirrrcurrentszTimeZoneDefinition.currentcs&tfddjD}t|dS)Nc3s|]\}}t|VqdSr)r)rntrrr rz)TimeZoneDefinition.set..)r rrRZSetTimeZoneInformationr rUrrrsetszTimeZoneDefinition.setcCs ||SrrCrrrrcopyszTimeZoneDefinition.copycCs|||jSr) _locate_dayr5r r&rrrlocate_daylight_startsz(TimeZoneDefinition.locate_daylight_startcCs|||jSr)r]r2r^rrrlocate_standard_startsz(TimeZoneDefinition.locate_standard_startc Cs|jdd}|j}|ddd}t||j||j|j|j|j}||d}|t |7}|j|jdkr|tj dd8}qb|S)a Takes a SYSTEMTIME object, such as retrieved from a TIME_ZONE_INFORMATION structure or call to GetTimeZoneInformation and interprets it based on the given year to identify the actual day. This method is necessary because the SYSTEMTIME structure refers to a day by its day of the week and week of the month (e.g. 4th saturday in March). >>> SATURDAY = 6 >>> MARCH = 3 >>> st = SYSTEMTIME(2000, MARCH, SATURDAY, 4, 0, 0, 0, 0) # according to my calendar, the 4th Saturday in March in 2009 was the 28th >>> expected_date = datetime.datetime(2009, 3, 28) >>> TimeZoneDefinition._locate_day(2009, st) == expected_date True r)Zweeks) r(r)rOr'r*r+r,r-ZweekdayrP)r&cutoffZtarget_weekdayZ week_of_monthr)resultZ days_to_gorrrr]s" zTimeZoneDefinition._locate_day)rDrDrDF)r"r#r$__doc__rr@r?rM classmethodrVr[r\r_r` staticmethodr] __classcell__rrrCrr;Cs"   r;c@seZdZdZdZdd4d5Zed6d7Zed8d9Z ed?d:d;Z!dS)@ TimeZoneInfoa Main class for handling Windows time zones. Usage: TimeZoneInfo(