Having issue with Arithmetic Formatter test

Python
1

I’m currently working on the first Python project “Arithmetic Formatter” under the Scientific Computing with Python Projects. One of the starting tests is giving me issue “test_module.py::test_template[test_incorrect_operator] FAILED”. I tried using regex and for in loop with if statement. I keep failing “Error: Operator must be ‘+’ or ‘-’.”. Is it possible to use list comprehension or must I split each individual index after looping argument from function. To search for test values ?. As I saw in other coders questions on this forum ?.
Here is my current version of my project. My Arithmetic Formatter Link
Any help is appreciated.

2

Relevant code

for character in  problems:
    
     if character in problems != '-' or character in problems != '+': 
         return  "Error: Operator must be '+' or '-'."

Have you checked if the individual parts of the if statement are what you expect? Try looking at that, ie:

print(character)
print(character in problems)
print(character in problems != '-')
3

Sorry I took so long to reply. I finally went with regular expression. Which I got to work with test parameters. My previous code had an error that I should have use and instead of or. To make both conditional statements to be true to pass in if statement example:
if character in problems != ‘-’ or character in problems != ‘+’:
Should have been if character in problems != ‘-’ and character in problems != ‘+’:
I found regular expressions works better for me.
Here is my current code:
Current Arithmetic Formatter

4

It’s purely coincidental if if character in problems != ‘-’ and character in problems != ‘+’: gave correct result for some cases.

I’d still suggest to take a look what each part of that statement is evaluated to.