python根据出生日期返回年龄的方法

def CalculateAge(self,Date):
    '''Calculates the age and days until next birthday from the given birth date'''
    try:
      Date = Date.split('.')
      BirthDate = datetime.date(int(Date[0]),int(Date[1]),int(Date[2]))
      Today = datetime.date.today()
      if (Today.month > BirthDate.month):
        NextYear = datetime.date(Today.year + 1,BirthDate.month,BirthDate.day)
      elif (Today.month < BirthDate.month):
        NextYear = datetime.date(Today.year,Today.month + (BirthDate.month - Today.month),BirthDate.day)
      elif (Today.month == BirthDate.month):
        if (Today.day > BirthDate.day):
          NextYear = datetime.date(Today.year + 1,BirthDate.day)
        elif (Today.day < BirthDate.day):
          NextYear = datetime.date(Today.year,Today.day + (BirthDate.day - Today.day))
        elif (Today.day == BirthDate.day):
          NextYear = 0
      Age = Today.year - BirthDate.year
      if NextYear == 0: #if today is the birthday
        return '%d,days until %d: %d' % (Age,Age+1,0)
      else:
        DaysLeft = NextYear - Today
        return '%d,DaysLeft.days)
    except:
      return 'Wrong date format'

print CheckDate('2000.05.05')