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class Date:
daysPerMonth = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ]
def __init__( self, month, day, year ):
if 0 < month <= 12:
self.month = month
else:
raise ValueError, "Invalid value for month: %d" % month
if year >= 0:
self.year = year
else:
raise ValueError, "Invalid value for year: %y" % year
self.day = self.checkDay( day )
print "Date constructor:",
self.display()
def __del__( self ):
print "Date object about to be destroyed:",
self.display()
def display( self ):
print "%d/%d/%d" % ( self.month, self.day, self.year )
def checkDay( self, testDay ):
if 0 < testDay <= Date.daysPerMonth[ self.month ]:
return testDay
elif self.month == 2 and testDay == 29 and ( self.year % 400 == 0 or self.year % 100 != 0 and self.year % 4 == 0 ):
return testDay
else:
raise ValueError, "Invalid day: %d for month: %d" % ( testDay, self.month )
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