import time
def spring_break():
  last_class_ends_at = 3 #change this accordingly
  end = time.mktime((2006, 3, 17, 12 + last_class_ends_at, 0, 0, 0, 0, 0))
  now = time.time()
  countdown = end - now
  seconds = int(1000 * (countdown % 60)) / 1000.0
  minutes = int(countdown / 60)
  hours = minutes / 60
  minutes = minutes % 60
  days = hours / 24
  hours = hours % 24
  print days,'day' + (days <> 1) * 's'
  print hours, 'hour' + (days <> 1) * 's'
  print minutes, 'minute' + (days <> 1) * 's'
  print seconds, 'second' + (days <> 1) * 's'

def abbreviate(somestring):
  output = ''
  for word in somestring.split():
    output = output + word[0]
  return output

#all grades on a 100 point scale
def grade(lab1, lab2, lab3, lab4, lab5, hw1, hw2, hw3, hw4, hw5, hw6, quiz1, quiz2, quiz3, pquiz1, pquiz2, pquiz3, pquiz4, pquiz5, exam1, exam2, finalexam):
  # weighted lab avg
  a = float(((lab1 + lab2 + lab3 + lab4 + lab5) / 5) * .15)
  # weighted hw avg
  b = float(((hw1 + hw2 + hw3 + hw4 + hw5 + hw6) / 6) * .25)
  # weighted quiz avg
  c = float(((quiz1 + quiz2 + quiz3) / 3) * .10)
  # weighted pop quiz avg
  d = float(((pquiz1 + pquiz2 + pquiz3 + pquiz4 + pquiz5) / 5) * .05)
  # weighted exam avg
  e = float(((exam1 + exam2) / 2) * .30)
  # weighted final exam
  f = float(finalexam * .15)
  # add up all the points
  g = float(a + b + c + d + e + f)
  print g
  if g >= 90:
    print 'A'
  elif g >= 80:
    print 'B'
  elif g >= 70:
    print 'C'
  elif g >= 60:
    print 'D'
  else:
    print 'F'

#all grades on a 100 point scale

def grade(list1, list2, list3, list4, list5):
  lablist = [lab1, lab2, lab3, lab4, lab5]
  hwlist = [hw1, hw2, hw3, hw4, hw5, hw6]
  quizlist = [quiz1, quiz2, quiz3]
  pquizlist = [pquiz1, pquiz2, pquiz3, pquiz4, pquiz5]
  examlist = [exam1, exam2, finalexam]
  for i in range(len(list1)):
    lablist[i] = list1[i]
  for i in range(len(list2)):
    hwlist[i] = list1[i]
  for i in range(len(list3)):
    quizlist[i] = list1[i]
  for i in range(len(list4)):
    pquizlist[i] = list1[i]
  for i in range(len(list5)):
    examlist[i] = list1[i]
  # weighted lab avg
  a = float(((lab1 + lab2 + lab3 + lab4 + lab5) / 5) * .15)
  # weighted hw avg
  b = float(((hw1 + hw2 + hw3 + hw4 + hw5 + hw6) / 6) * .25)
  # weighted quiz avg
  c = float(((quiz1 + quiz2 + quiz3) / 3) * .10)
  # weighted pop quiz avg
  d = float(((pquiz1 + pquiz2 + pquiz3 + pquiz4 + pquiz5) / 5) * .05)
  # weighted exam avg
  e = float(((exam1 + exam2) / 2) * .30)
  # weighted final exam
  f = float(finalexam * .15)
  # add up all the points
  g = float(a + b + c + d + e + f)
  print g
  if g >= 90:
    print 'A'
  elif g >= 80:
    print 'B'
  elif g >= 70:
    print 'C'
  elif g >= 60:
    print 'D'
  else:
    print 'F'

def grade(lab1,lab2,lab3,lab4,lab5,hw1,hw2,hw3,hw4,hw5,hw6,quiz1,quiz2,quiz3,exam1,exam2,pquiz1,pquiz2,pquiz3,pquiz4,pquiz5,pquiz6,pquiz7):
 l,h,q,e,p=[lab1, lab2, lab3, lab4, lab5],[hw1, hw2, hw3, hw4, hw5, hw6],[quiz1, quiz2, quiz3],[exam1, exam2],[pquiz1, pquiz2, pquiz3, pquiz4, pquiz5, pquiz6, pquiz7]
 p.sort()
 s,r=lambda x,y:0.0+x+y,reduce
 g=r(s,l)/5*.15 + r(s,h)/24 + r(s,q)/30 + r(s,p[2:])/100 + r(s,e)*.15
 print g
 for i in [('n A',90),(' B',80),(' C',70),(' D',60)]:print "To get a"+i[0]+", you need to make at least a ",int((i[1]-g)/.15*100)/100.0,"on the final."