AttributeError: 'tuple' object has no attribute 'append'

Question

So i’ve learned the first 2 modules of python and i wanted to write a program where you could type some numbers and it would give you the average of them. I had an error “AttributeError: 'tuple' object has no attribute 'append'” at line 22 and i looked it up, because i couldn’t figuer out what i did wrong. I’ve learned that a tuple is like a list but you can’t add anything and that it doesn’t use square brackets and i do clearly in line 4, so I can’t figuer out what i did wrong. Could anyone explain my mistake?
https://code.sololearn.com/cCF62uJ2VMs2/?ref=app

Answer 1

Max Poppe I haven't figured out the problems with your code, but I just wanted to thank/congratulate you for the quality of your question. It would be nice if everyone took the time to post thoughtful questions like that.

Answer 2

You have commas at the end of lines 1-4.

1: print("to stop adding numbers type 'quit' "),
2: input_user = input("type here your number:"),
3: result = 0,
4: input_numbers = [],

I think Python automatically creates a tuple for lines 2 & 4 because without the parenthesis this is normally a multi-assignment syntax:
a,b = b,a
...but without two variables on the left, Python took the 'safe' route, a tuple.

Line 1 appears to be ignored like the second part is an empty line, and
You overwrite line 3's result later, so it doesn't cause a problem.

Answer 3

The code that calculates your average is indented at the same/deeper level as an earlier always-'break'. This makes it unreachable code. (Hint)

Answer 4

Princetronixx wow i’m so embarassed right now. In my other code I did it right, well thank you so much for helping me. aparently I’ve also a mathematical mistake but at least I get a number now, I only devide the first number of the list, because i reset the sum every time, but i fixed it so thank you very much

Answer 5

There's not a single mistake, but there are a number of mistakes, firstly if you want to take multiple input, you have to include it inside the loop or use split().Check my code:

https://code.sololearn.com/cpChbcip2utc/?ref=app

Answer 6

David Ashton well thanks anyways for your effort and looking at my code.

Answer 7

How do you feel about functions? Like, do you have any practice with them, can you use them, do you have to stick with this format?

Answer 8

Kirk Schafer thanks for the hint not that I really know what that means, but I will try. I know how to make a code that works but I’ve been trying to fix this one for too long just to give up so I’ll stick with the mechanism of this code.

Answer 9

Kirk Schafer i’m only at module 2 I’d love to learn more, but I’m to busy to add more things to my sheet where i write everything I’ve learned so I took a break until I can put it on there, but I haven’t learned about the function “def” ect so this it what I have to do it with. For someone who knows the entire language it would probably be easier, but i like challenges.

Answer 10

your code contains bugs and errors on lines
7: (bug), if the user inputs "quit" the program
must calculate the average but the problem is
you *Break* before the calculation that is why
it always says average is zero

8 & 9 : (error) these lines are not correct
the right way to call len is len(input_numbers)

11 :(error) the correct way to access members of a list is by using square brackects [ ] that is
addition_number = input_numbers [index]

Answer 11

Kirk Schafer that could be, I honestly do not know, but without the comma’s i’ve another problem because I’ve used too much memory or time or something like that. so after trying out a bunch of things I tried a comma and my problem went away. On python itselve it sais that it can’t run multiple variables at a time with the error “SyntaxError: multiple statements found while compiling a single statement”

Answer 12

Thank you for your help, I actually tried to put it in before, but I still had errors so I removed it back to it’s original spot (outside) the while statement. I’ll keep it in there and try to figuer out the last few bugs, because now it sais that my result is 0 instead of the average of my numbers.