new_contents: #!/usr/bin/python
  #http://www.tutorialspoint.com/python/python_command_line_arguments.htm
  #ex: python3 score.py AAA:80,82,73,69 BBB:90,88,67,73 CCC:77,92,82,70
  
  import sys
  
  #print('Number of arguments:', len(sys.argv), 'arguments.')
  #print('Argument List:', str(sys.argv))
  
  #students = sys.argv
  students = {"Tom":[100,90,88,95,55], "John":[70,78,60,89], "Amy":[50,66,20,88,30], "Bob":[99,64,80,72,90], "Tony":[100,83,92] }
  #print(students)
  #print(type(students))
  #students.pop(0)
  
  #max
  firstStudent = {"name":"","score":0}
  #min
  lastStudent = {"name":"","score":9999}
  
  for student,scores in students.items():
  	sum = 0
  	index = 0
  	for score in scores:
  		sum += float(score)
  		index = index + 1
  	avg = sum/index
  	if avg > firstStudent["score"]:
  		firstStudent["name"] = student
  		firstStudent["score"] = avg
  	if avg < lastStudent["score"]:
  		lastStudent["name"] = student
  		lastStudent["score"] = avg
  	print(student,': sum is ',sum, ' and avg is ',avg)
  print('The highest student:',firstStudent["name"],': avg is ',firstStudent["score"])
  print('The lowest student:',lastStudent["name"],': avg is ',lastStudent["score"])
  
subject: add class test