problem uncompyling

[lblanquet]

Hello,

I've encountered the following problem while decompiling an application :

Error Message :

C:\Python27\python.exe \python27\scripts\unpyc.py ..\mx\DateTime\DateTime.pyc
#2012.09.04 11:42:44 Paris, Madrid (heure d'été)

""" Python part of the low-level DateTime[Delta] type implementation.

Copyright (c) 1998-2001, Marc-Andre Lemburg; mailto:mal@lemburg.com
Copyright (c) 2000-2011, eGenix.com Software GmbH; mailto:info@egenix.com
See the documentation for further information on copyrights,
or contact the author. All Rights Reserved.

"""

Can't uncompyle ..\mx\DateTime\DateTime.pyc

decompiled 0 files: 0 okay, 1 failed, 0 verify failed

#2012.09.04 11:42:45 Paris, Madrid (heure d'été)

Source - DateTime.py from mx package

""" Python part of the low-level DateTime[Delta] type implementation.

Copyright (c) 1998-2001, Marc-Andre Lemburg; mailto:mal@lemburg.com
Copyright (c) 2000-2011, eGenix.com Software GmbH; mailto:info@egenix.com
See the documentation for further information on copyrights,
or contact the author. All Rights Reserved.

"""

Import C extension module

from mxDateTime import *
from mxDateTime import version

Singletons

oneSecond = DateTimeDelta(0,0,0,1)
oneMinute = DateTimeDelta(0,0,1)
oneHour = DateTimeDelta(0,1)
oneDay = DateTimeDelta(1)
oneWeek = DateTimeDelta(7)
Epoch = DateTimeFromAbsDateTime(1, 0)

Shortcuts for pickle; for backward compatibility only (they are now

defined in init.py to further reduce the pickles length)

def _DT(absdate,abstime):
return DateTimeFromAbsDateTime(absdate,abstime)
def _DTD(seconds):
return DateTimeDeltaFromSeconds(seconds)

Module init

class modinit:

global _time, _math, _types, _sys, _pydatetime, _pydate, _pytime, _pytimedelta
import time, math, types, sys
_time = time
_math = math
_types = types
_sys = sys
try:
    import datetime
    _pydatetime = datetime.datetime
    _pydate = datetime.date
    _pytime = datetime.time
    _pytimedelta = datetime.timedelta
except ImportError:
    # Set them to (), so that isinstance() works with them
    _pydatetime = ()
    _pydate = ()
    _pytime = ()
    _pytimedelta = ()

del modinit

Helpers

def _isstring(arg,

          isinstance=isinstance, types=_types):

if isinstance(arg, types.StringType):
    return 1
try:
    if isinstance(arg, types.UnicodeType):
        return 1
except AttributeError:
    pass
return 0

Compatibility APIs

Aliases and functions to make 'from mx.DateTime import *' work much

like 'from time import *'

def localtime(ticks=None,
# Locals:
time=_time.time,float=float,localtime=_time.localtime,
round=round,int=int,DateTime=DateTime,floor=_math.floor):

"""localtime(ticks=None)

   Construct a DateTime instance using local time from ticks.  If
   ticks are not given, it defaults to the current time.  The
   result is similar to time.localtime(). Fractions of a second
   are rounded to the nearest micro-second.

"""
if ticks is None:
    ticks = time()
else:
    ticks = float(ticks)
ticks = round(ticks, 6)
fticks = floor(ticks)
Y,M,D,h,m,s = localtime(fticks)[:6]
s = s + (ticks - fticks)
return DateTime(Y,M,D,h,m,s)

def gmtime(ticks=None,
# Locals:
time=_time.time,float=float,gmtime=_time.gmtime,
round=round,int=int,DateTime=DateTime,floor=_math.floor,
DateTimeDeltaFromSeconds=DateTimeDeltaFromSeconds,
Unix_Epoch=DateTime(1970, 1, 1)):

"""gmtime(ticks=None)

   Construct a DateTime instance using UTC time from ticks.  If
   ticks are not given, it defaults to the current time.  The
   result is similar to time.gmtime(). Fractions of a second are
   rounded to the nearest micro-second.

"""
if ticks is None:
    ticks = time()
else:
    ticks = float(ticks)
ticks = round(ticks, 6)
if POSIX:
    # On POSIX platforms, the calulation is easy (and this also
    # makes the calulation safe against year 2038 wrap-arounds and
    # errors); see #421
    return Unix_Epoch + DateTimeDeltaFromSeconds(float(ticks))
fticks = floor(ticks)
Y,M,D,h,m,s = gmtime(ticks)[:6]
s = s + (ticks - fticks)
return DateTime(Y,M,D,h,m,s)

def mktime((year,month,day,hour,minute,second,dow,doy,dst),
# Locals:
DateTime=DateTime):

"""mktime((year,month,day,hour,minute,second,dow,doy,dst))

   Same as the DateTime() constructor accept that the interface
   used is compatible to the similar time.mktime() API.

   Note that the tuple elements dow, doy and dst are not used in
   any way.

"""
return DateTime(year,month,day,hour,minute,second)

def ctime(datetime):

"""ctime(datetime)

   Returns a string representation of the given DateTime instance
   using the current locale's default settings.

"""
return datetime.strftime('%c')

def today(hour=0,minute=0,second=0.0,
# Locals:
localtime=_time.localtime,time=_time.time,DateTime=DateTime):

"""today(hour=0,minute=0,second=0.0)

   Returns a DateTime instance for today (in local time) at the
   given time (defaults to midnight).

"""
Y,M,D = localtime(time())[:3]
return DateTime(Y,M,D,hour,minute,second)

def TimeDelta(hours=0.0,minutes=0.0,seconds=0.0,
# Locals:
DateTimeDelta=DateTimeDelta):

"""TimeDelta(hours=0.0,minutes=0.0,seconds=0.0)

   Returns a DateTimeDelta-object reflecting the given time
   delta. Seconds can be given as float to indicate fractions.

"""
return DateTimeDelta(0,hours,minutes,seconds)

def gm2local(datetime):

""" gm2local(datetime)

    Convert a DateTime instance holding UTC time to a DateTime
    instance using local time.

"""
return localtime(datetime.gmticks())

def local2gm(datetime):

""" local2gm(datetime)

    Convert a DateTime instance holding local time to a DateTime
    instance using UTC time.

"""
return gmtime(datetime.ticks())

Alias

gmt = utc

Default value for DateTimeFromTJD's tjd_myriad parameter

current_myriad = localtime().tjd_myriad

def DateTimeFromTJD(tjd,tjd_myriad=current_myriad):

""" DateTimeFromTJD(tjd[,myriad])

    Return a DateTime instance for the given Truncated Julian Day.
    myriad defaults to the TJD myriad current at package import
    time.

    Note that this version of Truncated Julian Day number does
    real truncation of important information. It's use is
    discouraged and unsupported.

"""
return DateTimeFromAbsDays(tjd + tjd_myriad * 10000.0 - 1721425.0)

def DateTimeFromJDN(jdn):

""" DateTimeFromJDN(jdn)

    Return a DateTime instance for the given Julian Day Number.

    References:
    -----------
    Gregorian 2000-01-01 12:00:00 corresponds to JDN 2451545.0.
    Gregorian 1858-11-17 00:00:00.00 corresponds to JDN 2400000.5; MJD 0.0.
    Julian -4712-01-01 12:00:00.00 corresponds to JDN 0.0.
    Gregorian -4713-11-24 12:00:00.00 corresponds to JDN 0.0.

"""
return DateTimeFromAbsDays(jdn - 1721425.5)

def DateTimeFromMJD(mjd):

""" DateTimeFromMJD(mjd)

    Return a DateTime instance for the given Modified Julian Day
    (MJD). The MJD is calculated the same way as the JDN except
    that 1858-11-17 00:00:00.00 is taken as origin of the scale.

"""
return DateTimeFromAbsDays(mjd + 678575.0)

def DateTimeFrom(_args, *_kws):

""" DateTimeFrom(*args, **kws)

    Generic DateTime instance constructor. Can handle parsing
    strings, numbers and keywords.

"""
if len(args) == 1:
    # Single argument
    arg = args[0]
    argtype = type(arg)
    if _isstring(arg):
        import Parser
        return Parser.DateTimeFromString(*args, **kws)
    elif argtype is DateTimeType:
        return arg
    elif argtype is DateTimeDeltaType:
        raise TypeError,'cannot convert DateTimeDelta to DateTime'
    elif isinstance(arg, _pydatetime):
        if arg.tzinfo is not None:
            # Convert to UTC
            offset = arg.utcoffset()
            arg -= offset
        return DateTime(
            arg.year, arg.month, arg.day,
            arg.hour, arg.minute,
            arg.second + arg.microsecond * 1e-6)
    elif isinstance(arg, _pydate):
        # Note: _pydatetime are subclasses of _pydates !
        return DateTime(arg.year, arg.month, arg.day)
    else:
        try:
            value = float(arg)
        except (TypeError, ValueError):
            value = int(arg)
        assert not kws
        return DateTimeFromTicks(value)

elif len(args) > 1:
    # More than one argument
    if len(args) == 2 and _isstring(args[0]) and _isstring(args[1]):
        # interpret as date and time string
        import Parser
        return Parser.DateTimeFromString(
            args[0] + ' ' + args[1],
            **kws)

    # Assume the arguments are the same as for DateTime()
    if 'defaultdate' in kws:
        raise TypeError('defaultdate is only supported when parsing '
                        'strings or using keyword arguments only')
    return DateTime(*args, **kws)

elif len(kws) > 0:
    # Keyword arguments only; add defaults... today at 0:00:00
    defaultdate = kws.get('defaultdate', None)
    if defaultdate is None:
        defaultdate = today()
    hour = kws.get('hour', defaultdate.hour)
    minute = kws.get('minute', defaultdate.minute)
    second = kws.get('second', defaultdate.second)
    day = kws.get('day', defaultdate.day)
    month = kws.get('month', defaultdate.month)
    year = kws.get('year', defaultdate.year)
    return DateTime(year,month,day,hour,minute,second)

else:
    raise TypeError(
        'cannot convert date/time arguments to DateTime: '
        'args=%r, kws=%r' % (args, kws))

def DateFrom(_args, *_kws):

""" DateFrom(*args, **kws)

    Generic DateTime instance constructor. Can handle parsing
    strings, numbers and keywords, but only works on the date
    part.

"""
if len(args) == 1:
    # Single argument
    arg = args[0]
    argtype = type(arg)
    if _isstring(arg):
        import Parser
        return Parser.DateFromString(*args, **kws)
    elif argtype is DateTimeType:
        return arg
    elif argtype is DateTimeDeltaType:
        raise TypeError,'cannot convert DateTimeDelta to DateTime'
    elif isinstance(arg, _pydate):
        # Note: _pydatetime are subclasses of _pydates !
        return DateTime(arg.year, arg.month, arg.day)
    else:
        try:
            value = float(arg)
        except (TypeError, ValueError):
            value = int(arg)
        assert not kws
        return DateTimeFromTicks(value)

elif len(args) > 1:
    # Assume the arguments are the same as for DateTime()
    return DateTime(*args, **kws)

elif len(kws) > 0:
    # Keyword arguments; add defaults... today at 0:00:00
    today = now()
    day = kws.get('day',today.day)
    month = kws.get('month',today.month)
    year = kws.get('year',today.year)
    return DateTime(year,month,day)

else:
    raise TypeError(
        'cannot convert date arguments to DateTime: args=%r, kws=%r' %
        (args, kws))

def DateTimeDeltaFrom(_args, *_kws):

""" DateTimeDeltaFrom(*args, **kws)

    Generic DateTimeDelta instance constructor. Can handle parsing
    strings, numbers and keywords.

"""
if len(args) == 1:
    # Single argument
    arg = args[0]
    if _isstring(arg):
        import Parser
        return Parser.DateTimeDeltaFromString(*args, **kws)
    elif type(arg) is DateTimeDeltaType:
        return arg
    elif type(arg) is DateTimeType:
        raise TypeError,'cannot convert DateTime to DateTimeDelta'
    elif isinstance(arg, _pytime):
        if arg.tzinfo is not None:
            # Convert to UTC
            offset = arg.utcoffset()
            # Another datetime module quirk: time - timedelta
            # doesn't work, so we have to use a different method
            # of adjusting the result
            return DateTimeDelta(0,
                                 arg.hour, arg.minute,
                                 arg.second + arg.microsecond * 1e-6
                                 - offset.seconds)
        else:
            return DateTimeDelta(0,
                                 arg.hour, arg.minute,
                                 arg.second + arg.microsecond * 1e-6)
    elif isinstance(arg, _pytimedelta):
        return DateTimeDelta(arg.days,
                             0, 0,
                             arg.seconds + arg.microseconds * 1e-6)
    else:
        try:
            value = float(arg)
        except TypeError:
            value = int(arg)
        assert not kws
        return DateTimeDeltaFromSeconds(value)

elif len(args) > 1:
    # Assume the arguments are the same as for DateTimeDelta()
    return DateTimeDelta(*args, **kws)

elif len(kws) > 0:
    # Keyword arguments; default: 00:00:00:00.00
    hours = kws.get('hours',0)
    minutes = kws.get('minutes',0)
    seconds = kws.get('seconds',0.0)
    days = kws.get('days',0)
    return DateTimeDelta(days,hours,minutes,seconds)

else:
    raise TypeError,'cannot convert arguments to DateTimeDelta'

def TimeDeltaFrom(_args, *_kws):

""" TimeDeltaFrom(*args, **kws)

    Generic TimeDelta instance constructor. Can handle parsing
    strings, numbers and keywords.

"""
if len(args) > 1:
    # Assume the arguments are the same as for TimeDelta(): without
    # days part !
    return DateTimeDelta(0, *args, **kws)
else:
    # Otherwise treat the arguments just like for DateTimeDelta
    # instances.
    return DateTimeDeltaFrom(*args, **kws)

def DateFromTicks(ticks,
# Locals:
DateTime=DateTime,localtime=_time.localtime):

""" DateFromTicks(ticks)

    Constructs a DateTime instance pointing to the local time date
    at 00:00:00.00 (midnight) indicated by the given ticks value.
    The time part is ignored.

"""
return DateTime(*localtime(ticks)[:3])

def TimestampFromTicks(ticks,
# Locals:
DateTime=DateTime,localtime=_time.localtime):

""" TimestampFromTicks(ticks)

    Constructs a DateTime instance pointing to the local date and
    time indicated by the given ticks value.

"""
return DateTime(*localtime(ticks)[:6])

def TimeFromTicks(ticks,
# Locals:
DateTimeDelta=DateTimeDelta,localtime=_time.localtime):

""" TimeFromTicks(ticks)

    Constructs a DateTimeDelta instance pointing to the local time
    indicated by the given ticks value. The date part is ignored.

"""
return DateTimeDelta(0, *localtime(ticks)[3:6])

Aliases

utctime = gmtime
utc2local = gm2local
local2utc = local2gm
DateTimeFromTicks = localtime
Date = DateTime
Time = TimeDelta
Timestamp = DateTime
TimeFrom = TimeDeltaFrom
TimestampFrom = DateTimeFrom
GregorianDateTime = DateTime
GregorianDate = Date
JulianDate = JulianDateTime

For backward compatibility (these are depreciated):

def gmticks(datetime):

"""gmticks(datetime)

   [DEPRECIATED: use the .gmticks() method]

   Returns a ticks value based on the values stored in
   datetime under the assumption that they are given in UTC,
   rather than local time.

"""
return datetime.gmticks()

Alias

utcticks = gmticks

def tz_offset(datetime,
# Locals:
oneSecond=oneSecond):

"""tz_offset(datetime)

   [DEPRECIATED: use the .gmtoffset() method]

   Returns a DateTimeDelta instance representing the UTC
   offset for datetime assuming that the stored values refer
   to local time. If you subtract this value from datetime,
   you'll get UTC time.

"""
return datetime.gmtoffset()

Constants (only English; see Locale.py for other languages)

Weekdays

Monday = 0
Tuesday = 1
Wednesday = 2
Thursday = 3
Friday = 4
Saturday = 5
Sunday = 6

as mapping

Weekday = {'Saturday': 5, 6: 'Sunday', 'Sunday': 6, 'Thursday': 3,
'Wednesday': 2, 'Friday': 4, 'Tuesday': 1, 'Monday': 0,
5: 'Saturday', 4: 'Friday', 3: 'Thursday', 2: 'Wednesday',
1: 'Tuesday', 0: 'Monday'}

Months

January = 1
February = 2
March = 3
April = 4
May = 5
June = 6
July = 7
August = 8
September = 9
October = 10
November = 11
December = 12

as mapping

Month = {2: 'February', 3: 'March', None: 0, 'July': 7, 11: 'November',
'December': 12, 'June': 6, 'January': 1, 'September': 9, 'August':
8, 'March': 3, 'November': 11, 'April': 4, 12: 'December', 'May':
5, 10: 'October', 9: 'September', 8: 'August', 7: 'July', 6:
'June', 5: 'May', 4: 'April', 'October': 10, 'February': 2, 1:
'January', 0: None}

Limits (see also the range checks in mxDateTime.c)

MaxDateTime = DateTime(_sys.maxint / 366 - 1, 12, 31)
MinDateTime = DateTime(-_sys.maxint / 366 + 2, 1, 1)
MaxDateTimeDelta = DateTimeDeltaFromSeconds(_sys.maxint * 86400.0)
MinDateTimeDelta = -MaxDateTimeDelta

class RelativeDateTime:

"""RelativeDateTime(years=0,months=0,days=0,
              hours=0,minutes=0,seconds=0,
              year=0,month=0,day=0,
              hour=None,minute=None,second=None,
              weekday=None,weeks=None)

   Returns a RelativeDateTime instance for the specified relative
   time. The constructor handles keywords, so you'll only have to
   give those parameters which should be changed when you add the
   relative to an absolute DateTime instance.

   Adding RelativeDateTime instances is supported with the
   following rules: deltas will be added together, right side
   absolute values override left side ones.

   Adding RelativeDateTime instances to DateTime instances will
   return DateTime instances with the appropriate calculations
   applied, e.g. to get a DateTime instance for the first of next
   month, you'd call now() + RelativeDateTime(months=+1,day=1).

"""
years = 0
months = 0
days = 0
year = None
month = 0
day = 0
hours = 0
minutes = 0
seconds = 0
hour = None
minute = None
second = None
weekday = None

# cached hash value
_hash = None

# For Zope security:
__roles__ = None
__allow_access_to_unprotected_subobjects__ = 1

def __init__(self,
             years=0,months=0,days=0,
             hours=0,minutes=0,seconds=0,
             year=None,month=None,day=None,
             hour=None,minute=None,second=None,
             weekday=None,weeks=0):

    self.years = years
    self.months = months
    self.days = days + weeks*7
    self.year = year
    self.month = month
    self.day = day
    self.hours = hours
    self.minutes = minutes
    self.seconds = seconds
    self.hour = hour
    self.minute = minute
    self.second = second
    if weekday is not None:
        #  Make sure we've got a 2-tuple
        assert len(weekday) == 2
        self.weekday = weekday

def __add__(self,other,
            # Locals:
            isinstance=isinstance):

    if isinstance(other,RelativeDateTime):
        # RelativeDateTime (self) + RelativeDateTime (other)

        r = RelativeDateTime()
        # date deltas
        r.years = self.years + other.years
        r.months = self.months + other.months
        r.days = self.days + other.days
        # absolute entries of other override those in self, if given
        r.year = other.year or self.year
        r.month = other.month or self.month
        r.day = other.day or self.day
        r.weekday = other.weekday or self.weekday
        # time deltas
        r.hours = self.hours + other.hours
        r.minutes = self.minutes + other.minutes
        r.seconds = self.seconds + other.seconds
        # absolute entries of other override those in self, if given
        r.hour = other.hour or self.hour
        r.minute = other.minute or self.minute
        r.second = other.second or self.second
        return r

    else:
        raise TypeError,"can't add the two types"

def __radd__(self,other,
             # Locals:
             isinstance=isinstance,DateTimeType=DateTimeType,
             DateTime=DateTime,DateTimeDelta=DateTimeDelta):

    if isinstance(other,DateTimeType):
        # DateTime (other) + RelativeDateTime (self)

        # date
        if self.year is None:
            year = other.year + self.years
        else:
            year = self.year + self.years
        if self.month is None:
            month = other.month + self.months
        else:
            month = self.month + self.months
        if self.day is None:
            day = other.day
        else:
            day = self.day
        if day < 0:
            # fix negative day values
            month = month + 1
            day = day + 1
        day = day + self.days
        # time
        if self.hour is None:
            hour = other.hour + self.hours
        else:
            hour = self.hour + self.hours
        if self.minute is None:
            minute = other.minute + self.minutes
        else:
            minute = self.minute + self.minutes
        if self.second is None:
            second = other.second + self.seconds
        else:
            second = self.second + self.seconds

        # Refit into proper ranges:
        if month < 1 or month > 12:
            month = month - 1
            yeardelta, monthdelta = divmod(month, 12)
            year = year + yeardelta
            month = monthdelta + 1

        # Make sure we have integers
        year = int(year)
        month = int(month)
        day = int(day)

        if self.weekday is None:
            return DateTime(year, month, 1) + \
                   DateTimeDelta(day-1,hour,minute,second)

        # Adjust to the correct weekday
        day_of_week,index = self.weekday
        d = DateTime(year, month, 1) + \
            DateTimeDelta(day-1,hour,minute,second)
        if index == 0:
            #0 index: next weekday if no match
            return d + (day_of_week - d.day_of_week)
        elif index > 0:
            # positive index (1 == first weekday of month)
            first = d - (d.day - 1)
            diff = day_of_week - first.day_of_week
            if diff >= 0:
                return first + (diff + (index-1) * 7)
            else:
                return first + (diff + index * 7)
        else:
            # negative index (-1 == last weekday of month)
            last = d + (d.days_in_month - d.day)
            diff = day_of_week - last.day_of_week
            if diff <= 0:
                return last + (diff + (index+1) * 7)
            else:
                return last + (diff + index * 7)

    else:
        raise TypeError,"can't add the two types"

def __sub__(self,other):

    if isinstance(other,RelativeDateTime):
        # RelativeDateTime (self) - RelativeDateTime (other)

        r = RelativeDateTime()
        # date deltas
        r.years = self.years - other.years
        r.months = self.months - other.months
        r.days = self.days - other.days
        # absolute entries of other override those in self, if given
        r.year = other.year or self.year
        r.month = other.month or self.month
        r.day = other.day or self.day
        r.weekday = other.weekday or self.weekday
        # time deltas
        r.hours = self.hours - other.hours
        r.minutes = self.minutes - other.minutes
        r.seconds = self.seconds - other.seconds
        # absolute entries of other override those in self, if given
        r.hour = other.hour or self.hour
        r.minute = other.minute or self.minute
        r.second = other.second or self.second

        return r

    else:
        raise TypeError,"can't subtract the two types"

def __rsub__(self,other,
             # Locals:
             isinstance=isinstance,DateTimeType=DateTimeType):

    if isinstance(other,DateTimeType):
        # DateTime (other) - RelativeDateTime (self)
        return other + self.__neg__()

    else:
        raise TypeError,"can't subtract the two types"

def __neg__(self):

    # - RelativeDateTime(self)

    r = RelativeDateTime()
    # negate date deltas
    r.years = - self.years
    r.months = - self.months
    r.days = - self.days
    # absolute entries don't change
    r.year = self.year
    r.month = self.month
    r.day = self.day
    r.weekday = self.weekday
    # negate time deltas
    r.hours = - self.hours
    r.minutes = - self.minutes
    r.seconds = - self.seconds
    # absolute entries don't change
    r.hour = self.hour
    r.minute = self.minute
    r.second = self.second

    return r

def __nonzero__(self):

    # RelativeDateTime instances are considered false in case
    # they do not define any alterations
    if (self.year is None and
        self.years == 0 and
        self.month is None and
        self.months == 0 and
        self.day is None and
        self.weekday is None and
        self.days == 0 and
        self.hour is None and
        self.hours == 0 and
        self.minute is None and
        self.minutes == 0 and
        self.second is None and
        self.seconds == 0):
        return 0
    else:
        return 1

def __mul__(self,other):

    # RelativeDateTime (self) * Number (other)
    factor = float(other)

    r = RelativeDateTime()
    # date deltas
    r.years = factor * self.years
    r.months = factor * self.months
    r.days = factor * self.days
    # time deltas
    r.hours = factor * self.hours
    r.minutes = factor * self.minutes
    r.seconds = factor * self.seconds
    return r

__rmul__ = __mul__

def __div__(self,other):

    # RelativeDateTime (self) / Number (other)
    return self.__mul__(1/float(other))

def __eq__(self, other):

    if isinstance(self, RelativeDateTime) and \
       isinstance(other, RelativeDateTime):
        # RelativeDateTime (self) == RelativeDateTime (other)
        if (self.years == other.years and
            self.months == other.months and
            self.days == other.days and
            self.year == other.year and
            self.day == other.day and
            self.hours == other.hours and
            self.minutes == other.minutes and
            self.seconds == other.seconds and
            self.hour == other.hour and
            self.minute == other.minute and
            self.second == other.second and
            self.weekday == other.weekday):
            return 1
        else:
            return 0
    else:
        raise TypeError,"can't compare the two types"

def __hash__(self):

    if self._hash is not None:
        return self._hash
    x = 1234
    for value in (self.years, self.months, self.days,
                  self.year, self.day,
                  self.hours, self.minutes, self.seconds,
                  self.hour, self.minute, self.second,
                  self.weekday):
        if value is None:
            x = 135051820 ^ x
        else:
            x = hash(value) ^ x
    self._hash = x
    return x

def __str__(self):

    l = []
    append = l.append

    # Format date part
    if self.year is not None:
        append('%04i-' % self.year)
    elif self.years:
        append('(%0+5i)-' % self.years)
    else:
        append('YYYY-')
    if self.month is not None:
        append('%02i-' % self.month)
    elif self.months:
        append('(%0+3i)-' % self.months)
    else:
        append('MM-')
    if self.day is not None:
        append('%02i' % self.day)
    elif self.days:
        append('(%0+3i)' % self.days)
    else:
        append('DD')
    if self.weekday:
        append(' %s:%i' % (Weekday[self.weekday[0]][:3],self.weekday[1]))
    append(' ')

    # Normalize relative time values to avoid fractions
    hours = self.hours
    minutes = self.minutes
    seconds = self.seconds
    hours_fraction = hours - int(hours)
    minutes = minutes + hours_fraction * 60.0
    minutes_fraction = minutes - int(minutes)
    seconds = seconds + minutes_fraction * 6.0
    seconds_fraction = seconds - int(seconds)

    if 0:
        # Normalize to standard time ranges
        if seconds > 60.0:
            extra_minutes, seconds = divmod(seconds, 60.0)
            minutes = minutes + extra_minutes
        elif seconds < -60.0:
            extra_minutes, seconds = divmod(seconds, -60.0)
            minutes = minutes - extra_minutes
        if minutes >= 60.0:
            extra_hours, minutes = divmod(minutes, 60.0)
            hours = hours + extra_hours
        elif minutes <= -60.0:
            extra_hours, minutes = divmod(minutes, -60.0)
            hours = hours - extra_hours

    # Format time part
    if self.hour is not None:
        append('%02i:' % self.hour)
    elif hours:
        append('(%0+3i):' % hours)
    else:
        append('HH:')
    if self.minute is not None:
        append('%02i:' % self.minute)
    elif minutes:
        append('(%0+3i):' % minutes)
    else:
        append('MM:')
    if self.second is not None:
        append('%02i' % self.second)
    elif seconds:
        append('(%0+3i)' % seconds)
    else:
        append('SS')

    return ''.join(l)

def __repr__(self):

    return "<%s instance for '%s' at 0x%x>" % ( 
        self.__class__.__name__, 
        self.__str__(), 
        id(self))

Alias

RelativeDate = RelativeDateTime

def RelativeDateTimeFrom(_args, *_kws):

""" RelativeDateTimeFrom(*args, **kws)

    Generic RelativeDateTime instance constructor. Can handle
    parsing strings and keywords.

"""
if len(args) == 1:
    # Single argument
    arg = args[0]
    if _isstring(arg):
        import Parser
        return Parser.RelativeDateTimeFromString(*args, **kws)
    elif isinstance(arg, RelativeDateTime):
        return arg
    else:
        raise TypeError,\
              'cannot convert argument to RelativeDateTime'

else:
    return RelativeDateTime(*args, **kws)

def RelativeDateTimeDiff(date1,date2,

                     floor=_math.floor,int=int,divmod=divmod,
                     RelativeDateTime=RelativeDateTime):

""" RelativeDateTimeDiff(date1,date2)

    Returns a RelativeDateTime instance representing the difference
    between date1 and date2 in relative terms.

    The following should hold: 

    date2 + RelativeDateDiff(date1,date2) == date1 

    for all dates date1 and date2.

    Note that due to the algorithm used by this function, not the
    whole range of DateTime instances is supported; there could
    also be a loss of precision.

    XXX There are still some problems left (thanks to Carel
    Fellinger for pointing these out):

    29 1 1901 ->  1 3 1901 = 1 month
    29 1 1901 ->  1 3 1900 = -10 month and -28 days, but
    29 1 1901 -> 28 2 1900 = -11 month and -1 day

    and even worse:

    >>> print RelativeDateDiff(Date(1900,3,1),Date(1901,2,1))
    YYYY-(-11)-DD HH:MM:SS

    with:

    >>> print Date(1901,1,29) + RelativeDateTime(months=-11)
    1900-03-01 00:00:00.00
    >>> print Date(1901,2,1) + RelativeDateTime(months=-11)
    1900-03-01 00:00:00.00

"""
diff = date1 - date2
if diff.days == 0:
    return RelativeDateTime()
date1months = date1.year * 12 + (date1.month - 1)
date2months = date2.year * 12 + (date2.month - 1)
#print 'months',date1months,date2months

# Calculate the months difference
diffmonths = date1months - date2months
#print 'diffmonths',diffmonths
if diff.days > 0:
    years,months = divmod(diffmonths,12)
else:
    years,months = divmod(diffmonths,-12)
    years = -years
date3 = date2 + RelativeDateTime(years=years,months=months)
diff3 = date1 - date3
days = date1.absdays - date3.absdays
#print 'date3',date3,'diff3',diff3,'days',days

# Correction to ensure that all relative parts have the same sign
while days * diff.days < 0:
    if diff.days > 0:
        diffmonths = diffmonths - 1
        years,months = divmod(diffmonths,12)
    else:
        diffmonths = diffmonths + 1
        years,months = divmod(diffmonths,-12)
        years = -years
    #print 'diffmonths',diffmonths
    date3 = date2 + RelativeDateTime(years=years,months=months)
    diff3 = date1 - date3
    days = date1.absdays - date3.absdays
    #print 'date3',date3,'diff3',diff3,'days',days

# Drop the fraction part of days
if days > 0:
    days = int(floor(days))
else:
    days = int(-floor(-days))

return RelativeDateTime(years=years,
                        months=months,
                        days=days,
                        hours=diff3.hour,
                        minutes=diff3.minute,
                        seconds=diff3.second)

Aliases

RelativeDateDiff = RelativeDateTimeDiff
Age = RelativeDateTimeDiff

_current_year = now().year
_current_century, _current_year_in_century = divmod(_current_year, 100)
_current_century = _current_century * 100

def add_century(year,

            current_year=_current_year,
            current_century=_current_century):

""" Sliding window approach to the Y2K problem: adds a suitable
    century to the given year and returns it as integer.

    The window used depends on the current year (at import time).
    If adding the current century to the given year gives a year
    within the range current_year-70...current_year+30 [both
    inclusive], then the current century is added. Otherwise the
    century (current + 1 or - 1) producing the smallest difference is
    chosen.

"""
if year > 99:
    # Take it as-is
    return year
year = year + current_century
diff = year - current_year
if diff >= -70 and diff <= 30:
    return year
elif diff < -70:
    return year + 100
else:
    return year - 100

Reference formulas for JDN taken from the Calendar FAQ:

def gregorian_jdn(year,month,day):

# XXX These require proper integer division.
a = (14-month)/12
y = year+4800-a
m = month + 12*a - 3
return day + (306*m+5)/10 + y*365 + y/4 - y/100 + y/400 - 32045

def julian_jdn(year,month,day):

# XXX These require proper integer division.
a = (14-month)/12
y = year+4800-a
m = month + 12*a - 3
return day + (306*m+5)/10 + y*365 + y/4 - 32083

[wibiti]

Thanks. Should be fixed now.