cig-cost/cost-of-smokes.py

#!/usr/bin/python3
#user input dolloars
#user input number of packs
#output day, week, month year costs
import os
import math

cost = None
packs = None

while True:
	os.system('clear')
	try:
		cost = float(input("How much does a pack cost? "))
	except ValueError:
		print("Please only type numbers")
		input("Press 'enter' to continue: ")
		continue
	
	try:
		packs = float(input("How many packs do you smoke a day? "))
	except ValueError:
		print("Please only type numbers")
		input("Press 'enter' to continue: ")
		continue
	os.system('clear')
	break


print("Your cigarettes cost $" + format(cost/20, '.2f'), "each")

print()	
print("You smoke: ")
print(math.ceil(20 * packs), "per day")
print(math.ceil(20 * packs * 7), "per week")
print(math.ceil((20 * packs * 365)/12), "per month")
print(math.ceil(20 * packs * 365), "per year")

print()

print("This costs you: ")
print("$" + format(cost * packs, '.2f'), "Per day")
print("$" + format(cost * packs * 7, '.2f'), "per week")
print("$" + format((cost * packs * 365)/12, '.2f'), "per month")
print("$" + format(cost * packs * 365, '.2f'), "per year")