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Start your free trialMarc Norris
625 PointsHow to handle 2 exceptions in one Try block
Hi there, I am trying to have the Try/Except block that we created handle 2 conditions and return 2 possible inputs for the user to correct their mistakes
As it stands it seems to only return the "Please enter a numerical value error", ignoring the tickets_remaining exception and also restarts the code rather than continuing.
Can anyone help me understand what I need to change?
TICKET_PRICE = 10
SERVICE_CHARGE = 2
tickets_remaining = 100
# Create the calculate_price function. It takes number of tickets and returns
# int(quantity) * TICKET_PRICE
def calculate_price(quantity):
# Create a new consant for the $2 service charge
# Add the service charge to calculate_price
return (int(quantity) * TICKET_PRICE) + SERVICE_CHARGE
while tickets_remaining >= 1:
user_name = input("What is your name? ")
print("Hi {}! There are currently {} tickets remaining.".format(user_name, tickets_remaining))
desire_to_buy = input("Would you like to buy any? ")
if desire_to_buy.lower() == "yes":
quantity = (input("Great! How many tickets would you like {}? ".format(user_name)))
# First, it quantity is not an int, request the user to enter numerical value
# Second, if quantity exceeds remaining tickets, inform customer and ask if they want fewer tickets
# Continue code if neither condition exists
try:
quantity = int(quantity)
if int(quantity) > tickets_remaining:
raise ValueError("There are only {} tickets remaining\nWould you like fewer tickets?".format(tickets_remaining))
except ValueError:
input("Please enter a numerical value: ")
else:
ticket_price = calculate_price(quantity)
confirmation = input("Okay that will cost ${}. Would you like to proceed?\n(Y/N) ".format(ticket_price))
if confirmation.lower() == "y":
print("Thank you {}, your order has been confirmed, please proceed to payment".format(user_name))
tickets_remaining -= int(quantity)
elif confirmation.lower() != "y":
print("Okay then, cya")
else:
print("Okay then, cya")
else:
print("Unfortunately there are no more available tickets, please check back later!")
1 Answer
Steven Parker
231,268 PointsHere's a few hints:
- the "except" needs to capture the event object in a variable with an "as" expression
- the event object should be used to create the output message
- without an assignment, the response to an "input" will be lost
- the "except" doesn't need to "input" anyway, the loop will handle that
- a plain "else" will do instead of an "elif" that tests the exact opposite condition from the "if"