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Python

Posted by James Tarala
James Tarala
278 Points

AtributeError object has not attribute 'lower'

I am following the coding example exactly. However, when I assign the 'lower' attribute to my variable, it throws an error: 'NoneType' object has not attribute 'lower'. 

TICKET_PRICE = 10

TICKETS_REMAINING = 100

while TICKETS_REMAINING >= 1:
    print(f"There are currently {TICKETS_REMAINING} tickets left!")
    name = input("What is your name? ")
    num_tickets_wanted = input(f"Hello, {name}! How many tickets would you like? ")
    num_tickets_wanted = int(num_tickets_wanted)
    total_price = num_tickets_wanted * TICKET_PRICE
    print(f"The cost of {num_tickets_wanted} tickets is ${total_price}, {name}.")
    proceed = print(input("Would you like to proceed, Y or N? "))
    if proceed.lower() == "Y":
        print("Sold!")
        TICKETS_REMAINING -= num_tickets_wanted
    else:
        print(f"Thank you anyways, {name}")
print("Sorry, the tickets are all sold out.")
James Tarala
James Tarala
278 Points

Not to mention, this code doesn't run properly also. It's not looping correctly. I have replicated what was done in the video almost exactly (except for the f-strings). Any help is definitely appreciated!

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

On this line:

    proceed = print(input("Would you like to proceed, Y or N? "))

The result of calling "print" is being assigned to the variable "proceed", but "print" doesn't return anything. So the attemt to call proceed.lower() on the next line fails.

My guess is that you really intended to write this instead:

    proceed = input("Would you like to proceed, Y or N? ")

…which would return a string that you could call "lower()" on.

For future questions, it would be nice if the question was linked to a lesson page.
Take a look at this video about Posting a Question for information on doing that.

James Tarala
James Tarala
278 Points

Awesome! Thank you! Not sure how I didn't catch that.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Also notice that the conditional on the next line will never succeed because after conversion to lower case, the input cannot match "Y" which is in upper case.