# Commits

committed 1c3644b

Initial revision

• Participants
• Parent commits 1ff6ced
• Branches legacy-trunk

# File Demo/scripts/unbirthday.py

`+#! /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()`