#lab assignment solution nov 29 - with function

#Discussion:
#functions: 
#1. pass_fail - has one parameter - list of grades
#returns two new lists: list of passing grades and list of failing grades
#2. average - has one parameter list, returns average of the list elements
#3. make_list_random - this function we wrote already

import random

def make_list_random(size, min_limit, max_limit):
	my_list=[]
	for i in range(size):
		n=random.randint(min_limit, max_limit)
		my_list.append(n)

	return my_list

def pass_fail(my_list):
	pass_list=[]
	fail_list=[]

	for i in range(len(my_list)):
		if(my_list[i]>=60):
			pass_list.append(my_list[i])
		else:
			fail_list.append(my_list[i])

	return pass_list, fail_list


def average(my_list):
	total=0
	for i in range(len(my_list)):
		total+=my_list[i]
	
	ave=total/len(my_list)

	return ave


def main():
	size=random.randint(5,15)
	print("size", size)

	my_list=make_list_random(size, 0, 100)
	print("grades are", my_list)

	pass_list, fail_list=pass_fail(my_list)

	if(len(pass_list)>0):
		print("passing grades are", pass_list)
		print("their average is", average(pass_list))
	else:
		print("nobody passed the class")

	if(len(fail_list)>0):
		print("failing grades are", fail_list)
		print("their average is", average(fail_list))
	else:
		print("nobody failed")
main()