[Python-checkins] python/dist/src/Lib _strptime.py,1.3,1.4
bwarsaw@users.sourceforge.net
bwarsaw@users.sourceforge.net
Thu, 29 Aug 2002 09:24:52 -0700
Update of /cvsroot/python/python/dist/src/Lib
In directory usw-pr-cvs1:/tmp/cvs-serv5581
Modified Files:
_strptime.py
Log Message:
Many hopefully benign style clean ups. Still passes the test suite of
course.
Index: _strptime.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/_strptime.py,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -d -r1.3 -r1.4
*** _strptime.py 29 Aug 2002 15:29:49 -0000 1.3
--- _strptime.py 29 Aug 2002 16:24:50 -0000 1.4
***************
*** 19,23 ****
Can be used in Python 2.2 if the following line is added:
>>> True = 1; False = 0
-
"""
import time
--- 19,22 ----
***************
*** 28,32 ****
from string import whitespace as whitespace_string
! __version__ = (2,1,5)
__author__ = "Brett Cannon"
__email__ = "drifty@bigfoot.com"
--- 27,31 ----
from string import whitespace as whitespace_string
! __version__ = (2,1,6)
__author__ = "Brett Cannon"
__email__ = "drifty@bigfoot.com"
***************
*** 34,37 ****
--- 33,39 ----
__all__ = ['strptime']
+ RegexpType = type(re_compile(''))
+
+
class LocaleTime(object):
"""Stores and handles locale-specific information related to time.
***************
*** 53,83 ****
possible lack of timezone such as UTC)
lang -- Language used by instance (string)
-
"""
def __init__(self, f_weekday=None, a_weekday=None, f_month=None,
! a_month=None, am_pm=None, LC_date_time=None, LC_time=None, LC_date=None,
! timezone=None, lang=None):
"""Optionally set attributes with passed-in values."""
! if f_weekday is None: self.__f_weekday = None
! elif len(f_weekday) == 7: self.__f_weekday = list(f_weekday)
else:
raise TypeError("full weekday names must be a 7-item sequence")
! if a_weekday is None: self.__a_weekday = None
! elif len(a_weekday) == 7: self.__a_weekday = list(a_weekday)
else:
raise TypeError(
! "abbreviated weekday names must be a 7-item sequence")
! if f_month is None: self.__f_month = None
elif len(f_month) == 12:
self.__f_month = self.__pad(f_month, True)
else:
raise TypeError("full month names must be a 12-item sequence")
! if a_month is None: self.__a_month = None
elif len(a_month) == 12:
self.__a_month = self.__pad(a_month, True)
else:
raise TypeError(
! "abbreviated month names must be a 12-item sequence")
if am_pm is None:
self.__am_pm = None
--- 55,90 ----
possible lack of timezone such as UTC)
lang -- Language used by instance (string)
"""
def __init__(self, f_weekday=None, a_weekday=None, f_month=None,
! a_month=None, am_pm=None, LC_date_time=None, LC_time=None,
! LC_date=None, timezone=None, lang=None):
"""Optionally set attributes with passed-in values."""
! if f_weekday is None:
! self.__f_weekday = None
! elif len(f_weekday) == 7:
! self.__f_weekday = list(f_weekday)
else:
raise TypeError("full weekday names must be a 7-item sequence")
! if a_weekday is None:
! self.__a_weekday = None
! elif len(a_weekday) == 7:
! self.__a_weekday = list(a_weekday)
else:
raise TypeError(
! "abbreviated weekday names must be a 7-item sequence")
! if f_month is None:
! self.__f_month = None
elif len(f_month) == 12:
self.__f_month = self.__pad(f_month, True)
else:
raise TypeError("full month names must be a 12-item sequence")
! if a_month is None:
! self.__a_month = None
elif len(a_month) == 12:
self.__a_month = self.__pad(a_month, True)
else:
raise TypeError(
! "abbreviated month names must be a 12-item sequence")
if am_pm is None:
self.__am_pm = None
***************
*** 98,144 ****
def __pad(self, seq, front):
! """Add '' to seq to either front (is True), else the back."""
seq = list(seq)
! if front: seq.insert(0, '')
! else: seq.append('')
return seq
def __set_nothing(self, stuff):
! """Raise TypeError when trying to set an attribute."""
raise TypeError("attribute does not support assignment")
def __get_f_weekday(self):
! """Fetch self.f_weekday."""
! if not self.__f_weekday: self.__calc_weekday()
return self.__f_weekday
def __get_a_weekday(self):
! """Fetch self.a_weekday."""
! if not self.__a_weekday: self.__calc_weekday()
return self.__a_weekday
f_weekday = property(__get_f_weekday, __set_nothing,
! doc="Full weekday names")
a_weekday = property(__get_a_weekday, __set_nothing,
! doc="Abbreviated weekday names")
def __get_f_month(self):
! """Fetch self.f_month."""
! if not self.__f_month: self.__calc_month()
return self.__f_month
def __get_a_month(self):
! """Fetch self.a_month."""
! if not self.__a_month: self.__calc_month()
return self.__a_month
f_month = property(__get_f_month, __set_nothing,
! doc="Full month names (dummy value at index 0)")
a_month = property(__get_a_month, __set_nothing,
! doc="Abbreviated month names (dummy value at index 0)")
def __get_am_pm(self):
! """Fetch self.am_pm."""
! if not self.__am_pm: self.__calc_am_pm()
return self.__am_pm
--- 105,158 ----
def __pad(self, seq, front):
! # Add '' to seq to either front (is True), else the back.
seq = list(seq)
! if front:
! seq.insert(0, '')
! else:
! seq.append('')
return seq
def __set_nothing(self, stuff):
! # Raise TypeError when trying to set an attribute.
raise TypeError("attribute does not support assignment")
def __get_f_weekday(self):
! # Fetch self.f_weekday.
! if not self.__f_weekday:
! self.__calc_weekday()
return self.__f_weekday
def __get_a_weekday(self):
! # Fetch self.a_weekday.
! if not self.__a_weekday:
! self.__calc_weekday()
return self.__a_weekday
f_weekday = property(__get_f_weekday, __set_nothing,
! doc="Full weekday names")
a_weekday = property(__get_a_weekday, __set_nothing,
! doc="Abbreviated weekday names")
def __get_f_month(self):
! # Fetch self.f_month.
! if not self.__f_month:
! self.__calc_month()
return self.__f_month
def __get_a_month(self):
! # Fetch self.a_month.
! if not self.__a_month:
! self.__calc_month()
return self.__a_month
f_month = property(__get_f_month, __set_nothing,
! doc="Full month names (dummy value at index 0)")
a_month = property(__get_a_month, __set_nothing,
! doc="Abbreviated month names (dummy value at index 0)")
def __get_am_pm(self):
! # Fetch self.am_pm.
! if not self.__am_pm:
! self.__calc_am_pm()
return self.__am_pm
***************
*** 146,151 ****
def __get_timezone(self):
! """Fetch self.timezone."""
! if not self.__timezone: self.__calc_timezone()
return self.__timezone
--- 160,166 ----
def __get_timezone(self):
! # Fetch self.timezone.
! if not self.__timezone:
! self.__calc_timezone()
return self.__timezone
***************
*** 154,173 ****
def __get_LC_date_time(self):
! """Fetch self.LC_date_time."""
! if not self.__LC_date_time: self.__calc_date_time()
return self.__LC_date_time
def __get_LC_date(self):
! """Fetch self.LC_date."""
! if not self.__LC_date: self.__calc_date_time()
return self.__LC_date
def __get_LC_time(self):
! """Fetch self.LC_time."""
! if not self.__LC_time: self.__calc_date_time()
return self.__LC_time
! LC_date_time = property(__get_LC_date_time, __set_nothing,
! doc="Format string for locale's date/time representation ('%c' format)")
LC_date = property(__get_LC_date, __set_nothing,
doc="Format string for locale's date representation ('%x' format)")
--- 169,193 ----
def __get_LC_date_time(self):
! # Fetch self.LC_date_time.
! if not self.__LC_date_time:
! self.__calc_date_time()
return self.__LC_date_time
def __get_LC_date(self):
! # Fetch self.LC_date.
! if not self.__LC_date:
! self.__calc_date_time()
return self.__LC_date
def __get_LC_time(self):
! # Fetch self.LC_time.
! if not self.__LC_time:
! self.__calc_date_time()
return self.__LC_time
! LC_date_time = property(
! __get_LC_date_time, __set_nothing,
! doc=
! "Format string for locale's date/time representation ('%c' format)")
LC_date = property(__get_LC_date, __set_nothing,
doc="Format string for locale's date representation ('%x' format)")
***************
*** 176,207 ****
def __get_lang(self):
! """Fetch self.lang."""
! if not self.__lang: self.__calc_lang()
return self.__lang
! lang = property(__get_lang, __set_nothing, doc="Language used for instance")
def __calc_weekday(self):
! """Set self.__a_weekday and self.__f_weekday using the calendar module."""
a_weekday = [calendar.day_abbr[i] for i in range(7)]
f_weekday = [calendar.day_name[i] for i in range(7)]
! if not self.__a_weekday: self.__a_weekday = a_weekday
! if not self.__f_weekday: self.__f_weekday = f_weekday
def __calc_month(self):
! """Set self.__f_month and self.__a_month using the calendar module."""
a_month = [calendar.month_abbr[i] for i in range(13)]
f_month = [calendar.month_name[i] for i in range(13)]
! if not self.__a_month: self.__a_month = a_month
! if not self.__f_month: self.__f_month = f_month
def __calc_am_pm(self):
! """Set self.__am_pm by using time.strftime().
!
! The magic date (2002, 3, 17, hour, 44, 44, 2, 76, 0) is not really
! that magical; just happened to have used it everywhere else where a
! static date was needed.
! """
am_pm = []
for hour in (01,22):
--- 196,232 ----
def __get_lang(self):
! # Fetch self.lang.
! if not self.__lang:
! self.__calc_lang()
return self.__lang
! lang = property(__get_lang, __set_nothing,
! doc="Language used for instance")
def __calc_weekday(self):
! # Set self.__a_weekday and self.__f_weekday using the calendar
! # module.
a_weekday = [calendar.day_abbr[i] for i in range(7)]
f_weekday = [calendar.day_name[i] for i in range(7)]
! if not self.__a_weekday:
! self.__a_weekday = a_weekday
! if not self.__f_weekday:
! self.__f_weekday = f_weekday
def __calc_month(self):
! # Set self.__f_month and self.__a_month using the calendar module.
a_month = [calendar.month_abbr[i] for i in range(13)]
f_month = [calendar.month_name[i] for i in range(13)]
! if not self.__a_month:
! self.__a_month = a_month
! if not self.__f_month:
! self.__f_month = f_month
def __calc_am_pm(self):
! # Set self.__am_pm by using time.strftime().
! # The magic date (1999,3,17,hour,44,55,2,76,0) is not really that
! # magical; just happened to have used it everywhere else where a
! # static date was needed.
am_pm = []
for hour in (01,22):
***************
*** 211,222 ****
def __calc_date_time(self):
! """Set self.__date_time, self.__date, & self.__time by using time.strftime().
!
! Use (1999,3,17,22,44,55,2,76,0) for magic date because the amount of
! overloaded numbers is minimized. The order in which searches for
! values within the format string is very important; it eliminates
! possible ambiguity for what something represents.
! """
time_tuple = time.struct_time((1999,3,17,22,44,55,2,76,0))
date_time = [None, None, None]
--- 236,246 ----
def __calc_date_time(self):
! # Set self.__date_time, self.__date, & self.__time by using
! # time.strftime().
! # Use (1999,3,17,22,44,55,2,76,0) for magic date because the amount of
! # overloaded numbers is minimized. The order in which searches for
! # values within the format string is very important; it eliminates
! # possible ambiguity for what something represents.
time_tuple = time.struct_time((1999,3,17,22,44,55,2,76,0))
date_time = [None, None, None]
***************
*** 250,274 ****
U_W = '%W'
date_time[offset] = current_format.replace('11', U_W)
! if not self.__LC_date_time: self.__LC_date_time = date_time[0]
! if not self.__LC_date: self.__LC_date = date_time[1]
! if not self.__LC_time: self.__LC_time = date_time[2]
def __calc_timezone(self):
! """Set self.__timezone by using time.tzname.
!
! Empty string used for matching when timezone is not used/needed such
! as with UTC.
!
! """
self.__timezone = self.__pad(time.tzname, 0)
def __calc_lang(self):
! """Set self.lang by using locale.getlocale() or
! locale.getdefaultlocale().
!
! """
current_lang = locale.getlocale(locale.LC_TIME)[0]
! if current_lang: self.__lang = current_lang
! else: self.__lang = locale.getdefaultlocale()[0]
class TimeRE(dict):
--- 274,300 ----
U_W = '%W'
date_time[offset] = current_format.replace('11', U_W)
! if not self.__LC_date_time:
! self.__LC_date_time = date_time[0]
! if not self.__LC_date:
! self.__LC_date = date_time[1]
! if not self.__LC_time:
! self.__LC_time = date_time[2]
def __calc_timezone(self):
! # Set self.__timezone by using time.tzname.
! #
! # Empty string used for matching when timezone is not used/needed such
! # as with UTC.
self.__timezone = self.__pad(time.tzname, 0)
def __calc_lang(self):
! # Set self.lang by using locale.getlocale() or
! # locale.getdefaultlocale().
current_lang = locale.getlocale(locale.LC_TIME)[0]
! if current_lang:
! self.__lang = current_lang
! else:
! self.__lang = locale.getdefaultlocale()[0]
!
class TimeRE(dict):
***************
*** 276,284 ****
def __init__(self, locale_time=LocaleTime()):
! """Initialize instance with non-locale regexes and store LocaleTime object."""
super(TimeRE,self).__init__({
! 'd': r"(?P<d>3[0-1]|[0-2]\d|\d| \d)", #The " \d" option is
! #to make %c from ANSI
! #C work
'H': r"(?P<H>2[0-3]|[0-1]\d|\d)",
'I': r"(?P<I>0\d|1[0-2]|\d)",
--- 302,309 ----
def __init__(self, locale_time=LocaleTime()):
! """Init inst with non-locale regexes and store LocaleTime object."""
super(TimeRE,self).__init__({
! # The " \d" option is to make %c from ANSI C work
! 'd': r"(?P<d>3[0-1]|[0-2]\d|\d| \d)",
'H': r"(?P<H>2[0-3]|[0-1]\d|\d)",
'I': r"(?P<I>0\d|1[0-2]|\d)",
***************
*** 289,293 ****
'U': r"(?P<U>5[0-3]|[0-4]\d|\d)",
'w': r"(?P<w>[0-6])",
! 'W': r"(?P<W>5[0-3]|[0-4]\d|\d)", #Same as U
'y': r"(?P<y>\d\d)",
'Y': r"(?P<Y>\d\d\d\d)"})
--- 314,318 ----
'U': r"(?P<U>5[0-3]|[0-4]\d|\d)",
'w': r"(?P<w>[0-6])",
! 'W': r"(?P<W>5[0-3]|[0-4]\d|\d)", # Same as U
'y': r"(?P<y>\d\d)",
'Y': r"(?P<Y>\d\d\d\d)"})
***************
*** 301,314 ****
if fetch == 'A':
self[fetch] = self.__seqToRE(self.locale_time.f_weekday,
! fetch)
elif fetch == 'a':
self[fetch] = self.__seqToRE(self.locale_time.a_weekday,
! fetch)
elif fetch == 'B':
self[fetch] = self.__seqToRE(self.locale_time.f_month[1:],
! fetch)
elif fetch == 'b':
self[fetch] = self.__seqToRE(self.locale_time.a_month[1:],
! fetch)
elif fetch == 'c':
self[fetch] = self.pattern(self.locale_time.LC_date_time)
--- 326,339 ----
if fetch == 'A':
self[fetch] = self.__seqToRE(self.locale_time.f_weekday,
! fetch)
elif fetch == 'a':
self[fetch] = self.__seqToRE(self.locale_time.a_weekday,
! fetch)
elif fetch == 'B':
self[fetch] = self.__seqToRE(self.locale_time.f_month[1:],
! fetch)
elif fetch == 'b':
self[fetch] = self.__seqToRE(self.locale_time.a_month[1:],
! fetch)
elif fetch == 'c':
self[fetch] = self.pattern(self.locale_time.LC_date_time)
***************
*** 321,325 ****
elif fetch == 'Z':
self[fetch] = self.__seqToRE(self.locale_time.timezone,
! fetch)
elif fetch == '%':
return '%'
--- 346,350 ----
elif fetch == 'Z':
self[fetch] = self.__seqToRE(self.locale_time.timezone,
! fetch)
elif fetch == '%':
return '%'
***************
*** 334,346 ****
differ by a suffix and thus want the name with the suffix to match
first.
-
"""
! try: a_length = len(a)
! except TypeError: a_length = 0
! try: b_length = len(b)
! except TypeError: b_length = 0
return cmp(b_length, a_length)
! to_convert = to_convert[:] #Don't want to change value in-place.
to_convert.sort(sorter)
regex = '(?P<%s>' % directive
--- 359,374 ----
differ by a suffix and thus want the name with the suffix to match
first.
"""
! try:
! a_length = len(a)
! except TypeError:
! a_length = 0
! try:
! b_length = len(b)
! except TypeError:
! b_length = 0
return cmp(b_length, a_length)
! to_convert = to_convert[:] # Don't want to change value in-place.
to_convert.sort(sorter)
regex = '(?P<%s>' % directive
***************
*** 359,364 ****
directive_index = format.index('%')+1
processed_format = "%s%s%s" % (processed_format,
! format[:directive_index-1],
! self[format[directive_index]])
format = format[directive_index+1:]
return "%s%s" % (processed_format, format)
--- 387,392 ----
directive_index = format.index('%')+1
processed_format = "%s%s%s" % (processed_format,
! format[:directive_index-1],
! self[format[directive_index]])
format = format[directive_index+1:]
return "%s%s" % (processed_format, format)
***************
*** 371,387 ****
def strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
! """Convert data_string to a time struct based on the format string or re object; will return an re object for format if data_string is False.
!
! The object passed in for format may either be a re object compiled by
! strptime() or a format string. If False is passed in for data_string
! then an re object for format will be returned. The re object
! must be used with the same language as used to compile the re object.
"""
locale_time = LocaleTime()
! if isinstance(format, type(re_compile(''))):
if format.pattern.find(locale_time.lang) == -1:
! raise TypeError("re object not created with same language as \
! LocaleTime instance")
else:
compiled_re = format
--- 399,414 ----
def strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
! """Return a time struct based on the input data and the format string.
+ The format argument may either be a regular expression object compiled by
+ strptime(), or a format string. If False is passed in for data_string
+ then the re object calculated for format will be returned. The re object
+ must be used with the same locale as was used to compile the re object.
"""
locale_time = LocaleTime()
! if isinstance(format, RegexpType):
if format.pattern.find(locale_time.lang) == -1:
! raise TypeError("re object not created with same language as "
! "LocaleTime instance")
else:
compiled_re = format
***************
*** 394,450 ****
if not found:
raise ValueError("time data did not match format")
! year = month = day = hour = minute = second = weekday = julian = tz = -1
found_dict = found.groupdict()
for group_key in found_dict.iterkeys():
! if group_key in 'yY':
! if group_key is 'y':
! year = int("%s%s" % (time.strftime("%Y")[:-2], found_dict['y']))
! else:
! year = int(found_dict['Y'])
! elif group_key in 'Bbm':
! if group_key is 'm':
! month = int(found_dict['m'])
! elif group_key is 'B':
! month = locale_time.f_month.index(found_dict['B'])
! else:
! month = locale_time.a_month.index(found_dict['b'])
! elif group_key is 'd':
day = int(found_dict['d'])
! elif group_key in 'HI':
! if group_key is 'H':
! hour = int(found_dict['H'])
! else:
! hour = int(found_dict['I'])
! ampm = found_dict.get('p')
! if ampm == locale_time.am_pm[0]:
! # We're in AM so the hour is correct unless we're
! # looking at 12 midnight.
! # 12 midnight == 12 AM == hour 0
! if hour == 12:
! hour = 0
! elif ampm == locale_time.am_pm[1]:
! # We're in PM so we need to add 12 to the hour unless
! # we're looking at 12 noon.
! # 12 noon == 12 PM == hour 12
! if hour != 12:
! hour += 12
! elif group_key is 'M':
minute = int(found_dict['M'])
! elif group_key is 'S':
second = int(found_dict['S'])
! elif group_key in 'Aaw':
! if group_key is 'A':
! weekday = locale_time.f_weekday.index(found_dict['A'])
! elif group_key is 'a':
! weekday = locale_time.a_weekday.index(found_dict['a'])
else:
! weekday = int(found_dict['w'])
! if weekday == 0:
! weekday = 6
! else:
! weekday -= 1
! elif group_key is 'j':
julian = int(found_dict['j'])
! elif group_key is 'Z':
if locale_time.timezone[0] == found_dict['Z']:
tz = 0
--- 421,474 ----
if not found:
raise ValueError("time data did not match format")
! year = month = day = hour = minute = second = weekday = julian = tz =-1
found_dict = found.groupdict()
for group_key in found_dict.iterkeys():
! if group_key == 'y':
! year = int("%s%s" %
! (time.strftime("%Y")[:-2], found_dict['y']))
! elif group_key == 'Y':
! year = int(found_dict['Y'])
! elif group_key == 'm':
! month = int(found_dict['m'])
! elif group_key == 'B':
! month = locale_time.f_month.index(found_dict['B'])
! elif group_key == 'b':
! month = locale_time.a_month.index(found_dict['b'])
! elif group_key == 'd':
day = int(found_dict['d'])
! elif group_key is 'H':
! hour = int(found_dict['H'])
! elif group_key == 'I':
! hour = int(found_dict['I'])
! ampm = found_dict.get('p')
! if ampm == locale_time.am_pm[0]:
! # We're in AM so the hour is correct unless we're
! # looking at 12 midnight.
! # 12 midnight == 12 AM == hour 0
! if hour == 12:
! hour = 0
! elif ampm == locale_time.am_pm[1]:
! # We're in PM so we need to add 12 to the hour unless
! # we're looking at 12 noon.
! # 12 noon == 12 PM == hour 12
! if hour != 12:
! hour += 12
! elif group_key == 'M':
minute = int(found_dict['M'])
! elif group_key == 'S':
second = int(found_dict['S'])
! elif group_key == 'A':
! weekday = locale_time.f_weekday.index(found_dict['A'])
! elif group_key == 'a':
! weekday = locale_time.a_weekday.index(found_dict['a'])
! elif group_key == 'w':
! weekday = int(found_dict['w'])
! if weekday == 0:
! weekday = 6
else:
! weekday -= 1
! elif group_key == 'j':
julian = int(found_dict['j'])
! elif group_key == 'Z':
if locale_time.timezone[0] == found_dict['Z']:
tz = 0
***************
*** 456,493 ****
julian = julianday(year, month, day)
if (month == -1 or day == -1) and julian != -1 and year != -1:
! year,month,day = gregorian(julian, year)
if weekday == -1 and year != -1 and month != -1 and day != -1:
weekday = dayofweek(year, month, day)
! return time.struct_time((year,month,day,hour,minute,second,weekday,
! julian,tz))
def firstjulian(year):
"""Calculate the Julian date up until the first of the year."""
! return ((146097*(year+4799))//400)-31738
def julianday(year, month, day):
! """Calculate the Julian day since the beginning of the year from the Gregorian date."""
! a = (14-month)//12
! return (day-32045+(((153*(month+(12*a)-3))+2)//5)+\
! ((146097*(year+4800-a))//400))-firstjulian(year)+1
def gregorian(julian, year):
! """Return a 3-item list containing the Gregorian date based on the Julian day."""
! a = 32043+julian+firstjulian(year)
! b = ((4*a)+3)//146097
! c = a-((146097*b)//4)
! d = ((4*c)+3)//1461
! e = c-((1461*d)//4)
! m = ((5*e)+2)//153
! day = 1+e-(((153*m)+2)//5)
! month = m+3-(12*(m//10))
! year = (100*b)+d-4800+(m//10)
return [year, month, day]
def dayofweek(year, month, day):
"""Calculate the day of the week (Monday is 0)."""
! a = (14-month)//12
! y = year-a
! weekday = (day+y+((97*y)//400)+((31*(month+(12*a)-2))//12))%7
if weekday == 0:
return 6
--- 480,521 ----
julian = julianday(year, month, day)
if (month == -1 or day == -1) and julian != -1 and year != -1:
! year, month, day = gregorian(julian, year)
if weekday == -1 and year != -1 and month != -1 and day != -1:
weekday = dayofweek(year, month, day)
! return time.struct_time(
! (year,month,day,hour,minute,second,weekday, julian,tz))
def firstjulian(year):
"""Calculate the Julian date up until the first of the year."""
! return ((146097 * (year + 4799)) // 400) - 31738
def julianday(year, month, day):
! """Calculate the Julian day since the beginning of the year.
! Calculated from the Gregorian date.
! """
! a = (14 - month) // 12
! return (day - 32045
! + (((153 * (month + (12 * a) - 3)) + 2) // 5)
! + ((146097 * (year + 4800 - a)) // 400)) - firstjulian(year) + 1
def gregorian(julian, year):
! """Return 3-item list containing Gregorian date based on the Julian day."""
! a = 32043 + julian + firstjulian(year)
! b = ((4 * a) + 3) // 146097
! c = a - ((146097 * b) // 4)
! d = ((4 * c) + 3) // 1461
! e = c - ((1461 * d) // 4)
! m = ((5 * e) + 2) // 153
! day = 1 + e - (((153 * m) + 2) // 5)
! month = m + 3 - (12 * (m // 10))
! year = (100 * b) + d - 4800 + (m // 10)
return [year, month, day]
def dayofweek(year, month, day):
"""Calculate the day of the week (Monday is 0)."""
! a = (14 - month) // 12
! y = year - a
! weekday = (day + y + ((97 * y) // 400)
! + ((31 * (month + (12 * a) -2 )) // 12)) % 7
if weekday == 0:
return 6