"""
Write a program that generates a list of prices all prices between 0.1 and 1 for items sold in the dollar store. Find the number of items in the store that cost 30 cents or less and their average price.

Use functions:

    def make_list_formatted(size, min, max) - generates list of FLOATING POINT NUMBERS
    def items30(my_list) returns number of items that cost 30 cents or less and their average. 

Write main to test your functions. 
"""
import random
def make_list_formatted(size, min, max):
	return [round(random.uniform(min,max),2) for i in range(size)]
def items30(my_list):
	count_30cents=0
	sum_30cents=0
	for price in my_list:
		if(price<=0.3):
			count_30cents+=1 #count_30cents=count_30cents+1
			sum_30cents+=price #sum_30cents=sum_30cents+price
	#if you want to create new list of items below 30 cents using list
	#comprehensions you can do: new_list=[price for price in my_list if price<0.3]

	if(count_30cents>0):
		return count_30cents, sum_30cents/count_30cents
	else:
		return None, None #nothing to return 

def main():
	prices=make_list_formatted(10,0.1,1)
	print(prices)
	count, ave=items30(prices)
	if(count==None):
		print("no items below 30 cents")
	else:
		print("there",count,"items below 30 cents")
		print("Their average is", round(ave,2))
main()