🔒 how to convert string equation to answer?

[pale loom]

i'm using tkinter

[wise whale]

@pale loom

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[pale loom]

so i want to convert addition equation like 1+2+3+4 to 10

[slender flint]

Okay

[smoky dock]

!paste can you send your code?

[wise whale]

Pasting large amounts of code

If your code is too long to fit in a codeblock in Discord, you can paste your code here:
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[ember nebula]

!e only use this is youre sure your input cant be anything malicious

input_string = '1+2+3+4'
print(eval(input_string))

[wise whale]

@ember nebula :white_check_mark: Your 3.12 eval job has completed with return code 0.

10

[slender flint]

answer = sum(int())

?

[pale loom]

isn't eval dangourese?

[tender hound]

Only if the user can do something malicious

[ember nebula]

Seeing as how this is a calculator, I don't see how the input_string could be something malicious

so you're fine

[tender hound]

Which is about 99% of the time

[pale loom]

i won' use it.

[tender hound]

You are fine if you use it here

[pale loom]

no

[tender hound]

Ah well

[pale loom]

it's a tkinter entry widget

altho

i make it not type

whatever

and lock it instead

i think

btw thank y'all for helping me

[median scarab]

well, if it's a desktop app, that runs on the users computer.. the only place the user can harm is their own computer then... It only really becomes troublesome if you accept user input from the internet or something like that and run other users code on your computer

[ember nebula]

well thats new

[muted nymph]

yes, it is unsafe

[pale loom]

no it's too big lol

[smoky dock]

That's what the pastebin is for. It's for larger code.

[pale loom]

https://paste.pythondiscord.com/YPXA

there!

[pale loom]

sorry mb i didn't read it properly

n = input("equation: ").split("+")
print(sum(n))
```i was testign the sum function in a different file

eval is dangourous tho

[jolly plaza]

There is something called ast_eval I think which was much safer than eval

!d ast.literal_eval

[wise whale]

ast.literal\_eval

ast.literal_eval(node_or_string)```
Evaluate an expression node or a string containing only a Python literal or container display. The string or node provided may only consist of the following Python literal structures: strings, bytes, numbers, tuples, lists, dicts, sets, booleans, `None` and `Ellipsis`.

This can be used for evaluating strings containing Python values without the need to parse the values oneself. It is not capable of evaluating arbitrarily complex expressions, for example involving operators or indexing.

[pale loom]

uh

i don't wanna use them

sum is fine

[pale loom]

no in my ide it says it's not diffined

[jolly plaza]

!d ast

[wise whale]

ast

Source code: Lib/ast.py

The ast module helps Python applications to process trees of the Python abstract syntax grammar. The abstract syntax itself might change with each Python release; this module helps to find out programmatically what the current grammar looks like.

An abstract syntax tree can be generated by passing ast.PyCF_ONLY_AST as a flag to the compile() built-in function, or using the parse() helper provided in this module. The result will be a tree of objects whose classes all inherit from ast.AST. An abstract syntax tree can be compiled into a Python code object using the built-in compile() function.

[jolly plaza]

ast is a library

you gotta import/install it

[pale loom]

figured that out as i sent the message

[fleet nebula]

you can use eval function?

[pale loom]

that's unsafe

[karmic magnet]

Could also validate input: test input string against a regex (only digits and expected characters, etc).

[pale loom]

yeahhh

i know regex

[ember nebula]

smart

[smoky dock]

https://www.youtube.com/watch?v=mop6g-c5HEY&t=54032s

This part of the video goes over basic calculator logic with tkinter.

[pale loom]

i am actually a part of clear code's server

and cs50

[pale loom]

uhm, i think i know that stuff

[smoky dock]

I edited it, I had the wrong timestamp.

[pale loom]

i just need to turn equations into answer

[pale loom]

makes sense

thanks

@smoky dock did you run my code?

the timestamp you sent is uhm

i already implemented the join thing

[smoky dock]

There's more to it, you have to keep watching.

[pale loom]

hurts my head man

[pale loom]

imma just do this

[pale loom]

@smoky dock @karmic magnet thank you all for helping but i used the regex method

murdox, i appreciate your help too

it works like a charm

[wise whale]

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