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| -rwxr-xr-x | Demo/scripts/unbirthday.py | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/Demo/scripts/unbirthday.py b/Demo/scripts/unbirthday.py new file mode 100755 index 0000000..492b247 --- /dev/null +++ b/Demo/scripts/unbirthday.py @@ -0,0 +1,106 @@ +#! /usr/local/bin/python + +# Calculate your unbirthday count (see Alice in Wonderland). +# This is defined as the number of days from your birth until today +# that weren't your birthday. (The day you were born is not counted). +# Leap years make it interesting. + +import sys +import time +import calendar + +def main(): + # Note that the range checks below also check for bad types, + # e.g. 3.14 or (). However syntactically invalid replies + # will raise an exception. + if sys.argv[1:]: + year = eval(sys.argv[1]) + else: + year = input('In which year were you born? ') + if year in range(100): + print 'I\'ll assume that by', year, + year = year + 1900 + print 'you mean', year, 'and not the arly Christian era' + elif year not in range(1850, 2000): + print 'It\'s hard to believe you were born in', year + return + # + if sys.argv[2:]: + month = eval(sys.argv[2]) + else: + month = input('And in which month? (1-12) ') + if month not in range(1, 13): + print 'There is no month numbered', month + return + # + if sys.argv[3:]: + day = eval(sys.argv[3]) + else: + day = input('And on what day of that month? (1-31) ') + if month == 2 and calendar.isleap(year): + maxday = 29 + else: + maxday = calendar.mdays[month] + if day not in range(1, maxday+1): + print 'There are no', day, 'days in that month!' + return + # + bdaytuple = (year, month, day) + bdaydate = mkdate(bdaytuple) + print 'You were born on', format(bdaytuple) + # + todaytuple = time.localtime(time.time())[:3] + todaydate = mkdate(todaytuple) + print 'Today is', format(todaytuple) + # + if bdaytuple > todaytuple: + print 'You are a time traveler. Go back to the future!' + return + # + if bdaytuple == todaytuple: + print 'You were born today. Have a nice life!' + return + # + days = todaydate - bdaydate + print 'You have lived', days, 'days' + # + age = 0 + for y in range(year, todaytuple[0] + 1): + if bdaytuple < (y, month, day) <= todaytuple: + age = age + 1 + # + print 'You are', age, 'years old' + # + if todaytuple[1:] == bdaytuple[1:]: + print 'Congratulations! Today is your', nth(age), 'birthday' + print 'Yesterday was your', + else: + print 'Today is your', + print nth(days - age), 'unbirthday' + +def format((year, month, day)): + return '%d %s %d' % (day, calendar.month_name[month], year) + +def nth(n): + if n == 1: return '1st' + if n == 2: return '2nd' + if n == 3: return '3rd' + return '%dth' % n + +def mkdate((year, month, day)): + # Januari 1st, in 0 A.D. is arbitrarily defined to be day 1, + # even though that day never actually existed and the calendar + # was different then... + days = year*365 # years, roughly + days = days + (year+3)/4 # plus leap years, roughly + days = days - (year+99)/100 # minus non-leap years every century + days = days + (year+399)/400 # plus leap years every 4 centirues + for i in range(1, month): + if i == 2 and calendar.isleap(year): + days = days + 29 + else: + days = days + calendar.mdays[i] + days = days + day + return days + +main() |