2 # Purpose: Date and Calendar classes
4 # Author: Lorne White (email: lwhite1@planet.eon.net)
7 # Version 0.2 08-Nov-1999
8 # Licence: wxWindows license
9 #----------------------------------------------------------------------------
10 # Updated: 01-Dec-2004
11 # Action: Cast the year variable to an integer under the Date Class
12 # Reason: When the year was compared in the isleap() function, if it was
13 # in a string format, then an error was raised.
17 Month = {2: 'February', 3: 'March', None: 0, 'July': 7, 11:
18 'November', 'December': 12, 'June': 6, 'January': 1, 'September': 9,
19 'August': 8, 'March': 3, 'November': 11, 'April': 4, 12: 'December',
20 'May': 5, 10: 'October', 9: 'September', 8: 'August', 7: 'July', 6:
21 'June', 5: 'May', 4: 'April', 'October': 10, 'February': 2, 1:
24 # Number of days per month (except for February in leap years)
25 mdays = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
27 # Full and abbreviated names of weekdays
28 day_name = [ 'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
29 day_abbr = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', ]
31 # Return number of leap years in range [y1, y2)
32 # Assume y1 <= y2 and no funny (non-leap century) years
35 return (y2+3)/4 - (y1+3)/4
37 # Return 1 for leap years, 0 for non-leap years
39 return year % 4 == 0 and (year % 100 <> 0 or year % 400 == 0)
48 def julianDay(year, month, day):
50 year, month, day = long(year), long(month), long(day)
52 year = year + month/12L
56 year = year - month/12L - 1L
57 month = 12L - month%12L
65 if year*10000L + month*100L + day > 15821014L:
66 b = 2L - year/100L + year/400L
67 return (1461L*year - yearCorr)/4L + 306001L*(month + 1L)/10000L + day + 1720994L + b
71 date = time.localtime(time.time())
75 julian = julianDay(year, month, day)
76 daywk = dayOfWeek(julian)
77 daywk = day_name[daywk]
81 date = FromFormat(value)
82 daywk = DateCalc.dayOfWeek(date)
83 daywk = day_name[daywk]
86 def FromJulian(julian):
88 if (julian < 2299160L):
91 alpha = (4L*julian - 7468861L)/146097L
92 b = julian + 1526L + alpha - alpha/4L
93 c = (20L*b - 2442L)/7305L
95 e = 10000L*(b - d)/306001L
96 day = int(b - d - 306001L*e/10000L)
106 return year, month, day
108 def dayOfWeek(julian):
109 return int((julian + 1L)%7L)
111 def daysPerMonth(month, year):
112 ndays = mdays[month] + (month == 2 and isleap(year))
117 self.date = time.localtime(time.time())
118 self.year = self.date[0]
119 self.month = self.date[1]
120 self.day = self.date[2]
123 def __init__(self, year, month, day):
124 self.julian = julianDay(year, month, day)
126 self.year = int(year)
127 self.day_of_week = dayOfWeek(self.julian)
128 self.days_in_month = daysPerMonth(self.month, self.year)