Receiving 'KeyError:1 ' , Why is this happening and how can I fix it?

Here I edited and added comments where you were wrong.

`def topping_menu(): print(""" What toppings do you want on your pizza?

    _____________________________________________________
   |   1:Bacon      |  5:Anchovies     |  9:Black Olives |
   |   2:Pepperoni  |  6:Spinach       |  10:Chicken     |
   |   3:Mushrooms  |  7:Onion         |  11:Ground Beef |
   |   4:Pineapple  |  8:Bell Peppers  |  12:Jalapenos   |
   |________________|__________________|_________________| 
   What toppings do you want on your pizza?
   """)
     

def topping_order():

topping_mappings = {
    1: 'Bacon', 
    2: 'Pepperoni', 
    3: 'Mushrooms', 
    4: 'Pineapple', 
    5: 'Anchovies', 
    6: 'Spinach', 
    7: 'Onions', 
    8: 'Bell Peppers', 
    9: 'Black Olives',
    10: 'Chicken', 
    11: 'Ground Beef',
    12: 'Jalapenos'
    }
requested_toppings = []

while True:
    response = input('-')
    if response == 'q':#Checking for Quit
        break
    toppings_wanted = response
    toppings_wanted = topping_mappings[int(toppings_wanted)]#Converting response to int
    requested_toppings.append(toppings_wanted)
    

    

    #for requested_topping in requested_toppings: 
    #You dont need the for loop
    if toppings_wanted in topping_mappings.values():#You were not comparing it with Values
        print(f"Adding: {toppings_wanted}") #This should be toppings wanted

    else:
        print(f"We do not have {toppings_wanted}") #This also should be toppings wanted
topping_total = len(requested_toppings) * float(1.23) #You dont have to write float python knows its float by default

print("nWe are adding the requested toppings to your pizza.")
print(f"your topping total will be: ${topping_total}")

`

this is wrong

 requested_toppings.append(requested_toppings)

it should be

 requested_toppings.append(toppings_wanted)

and you need to take int as an input

response = int(input('-'))

and u have an extra '

12: 'Jalapenos''

• response = input('-') the input function here will return str.

• Your dict topping_mappings here has key as int. So you need to convert to int before this toppings_wanted = topping_mappings[toppings_wanted]

• the following change is one way to fix it.

response = input('-')
toppings_wanted = int(response) if response.isdigit() else None
toppings_wanted = topping_mappings[toppings_wanted]

The issue is toppings_wanted is a string and your keys are ints

toppings_wanted = topping_mappings[int(toppings_wanted)]