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![Alan Aranga](https://uploads.teamtreehouse.com/production/profile-photos/11614498/micro_IMG_0765.jpg)
Alan Aranga
6,010 PointsRaising Exceptions...
TICKET_PRICE = 10
def price_calculator(TICKET_PRICE, number_of_tickets): if number_of_tickets <= 0: raise ValueError("Tickets ordered have to be more that 0. Please try again.") elif number_of_tickets > tickets_remaining: raise ValueError("Sorry {}, there are only {} tickets remaining. Please try again.".format(name, tickets_remaining)) return TICKET_PRICE * number_of_tickets
tickets_remaining = 100 while tickets_remaining > 0: name = input("Hi, What is your name? ") print("Hi {}, there are {} tickets remaining.".format(name, tickets_remaining)) try: number_of_tickets = int(input("How many tickets would you like {}? ".format(name))) cost = price_calculator(TICKET_PRICE, number_of_tickets) except ValueError as err: print("Oh no, we ran into an issue. Please try again.") print("{}".format(err)) else: print("The total due is ${}.".format(cost)) decision = input("Would you like to proceed with the purchase?\n(Enter Y/N)") if decision.lower() == "y": print("SOLD!! Enjoy the show {}.".format(name)) tickets_remaining -= number_of_tickets else: print("Thank you for your time {}.".format(name)) print("Sorry, all the tickets are sold out!😭")
I opted to use a function for this command line application. I thought I handled all the exceptions but whenever a user enters a string for the 'number_of_tickets_variable' I keep getting this error in the console: "invalid literal for int() with base 10: 't'". Is there any change I can make to this code to handle the error in a user-friendly manner?
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsHere is a video about making and sharing a snapshot of your workspace.
1 Answer
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsThat's the correct system error message, though as you point out it's not terribly "user friendly". But you can show anything you like:
# print("{}".format(err)) # so instead of the system error
print("Be sure to enter a number this time!") # you could show something else
Alan Aranga
6,010 PointsAlan Aranga
6,010 PointsSorry the code is all jumbled up, I didn't know how to add the workspaces bit...