🔒 Previous Error

[silver oyster]

import time
import math
b = 0

print(' ')
print('Hello, welcome to our bakery!')
print('What would you like to buy?')
print(' ')

time.sleep(1)

print('Cake')
time.sleep(1)

print('Biscuit')
time.sleep(1)

print('Ice Cream')
time.sleep(1)

a = str(input(' '))

if(a == 'Cake'):
    b = int(input('How many? (1 Slice of Cake is 1.99$)'))

elif (a == 'Biscuit'):
    c = input('How many? (1 Biscuit is 0.99$)')

elif (a == 'Ice Cream'):
    d = input('How many? (One Ice Cream ball is 1.99$)')

else:
    print('You ordered wrong! Make sure you type it correct.')
    run

result_b = b * 1.99
float(print(result_b))

[royal stirrup]

Hey @silver oyster!

It looks like you pasted Python code without syntax highlighting.

Please use syntax highlighting to improve the legibility of your code and make it easier for us to help you.

To do this, use the following method:
```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```
You can **edit your original message** to correct your code block.

[royal stirrup]

@silver oyster

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[silver oyster]

what should I do to avoid this error

[alpine ruin]

float(print(result_b)): Why are you passing the return of print to float?

Do you understand what print is for?

@silver oyster

[silver oyster]

is it wrong

the way I use

[alpine ruin]

Yes

Why are you calling float on that line? Passing the return of print to float is the problem, but it's not clear why you're using float there at all now that I read the code again.

[cerulean charm]

a = str(input(' '))

input returns a string casting a string to a string is useless

[alpine ruin]

Sorry, calling out print was actually a red herring.

[silver oyster]

to make it be able to print float numbers too

idk im not that good in python 😭

[alpine ruin]

result_b is already a float though.

!e

result_b = 1.99
print(result_b)

[royal stirrup]

@alpine ruin :white_check_mark: Your 3.12 eval job has completed with return code 0.

1.99

[cerulean charm]

print() has no return value, or the return value "None", but you cannot cast None to a float, so the error is thrown

[silver oyster]

I tried

if(a == 'Cake'):
    b = int(input('How many? (1 Slice of Cake is 1.99$)'))

result_b = b * 1.99
float(print(result_b))

when you type a number

multiply it with 1.99

and print

[alpine ruin]

Yes, but result_b is already a float.

[cerulean charm]

you are still trying to cast None into a float, that is not possible

[alpine ruin]

Calling float there doesn't make sense.

[silver oyster]

okay

[cerulean charm]

print returns None

[silver oyster]

what should I do

[cerulean charm]

remove the cast

[alpine ruin]

Remove the call to float.

[cerulean charm]

👍

[silver oyster]

oh

[alpine ruin]

Yes, like I showed above.

[silver oyster]

i'm impressed, and disappointed of myself

thanks for the help

[alpine ruin]

You're welcome. I'd encourage you to understand exactly why you got the error that you did though, if you don't fully understand it yet.

Understanding how return values and arguments work is very important, as is thinking about the purpose of function calls.

[silver oyster]

where can I learn them better?

[cerulean charm]

i recommend programming books. but you can also use you tube tutorials, but they are usually not very complete and usually do not explain how and why it works

[alpine ruin]

Just practice. Practice using functions. Eventually, their use will become more familiar.

Also, think about error messages when you get them. That error message you got told you everything you needed to know to solve this.

[royal stirrup]

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