Assertion Error

Python
1

Tell us what’s happening:
I am trying to complete the arithmetic formatted project and have completed the code without the error checks. When I run it, I am getting assertion errors in all test cases and I cant understand what it is from or why.

Your code so far

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Challenge: Arithmetic Formatter

Link to the challenge:

2

Try going through them one by one. For example, the first test:

arguments = [['3801 - 2', '123 + 49']], expected_output = '  3801      123\n-    2    +  49\n------    -----'
fail_message = 'Expected different output when calling "arithmetic_arranger()" with ["3801 - 2", "123 + 49"]'

>   ???
E   AssertionError: Expected different output when calling "arithmetic_arranger()" with ["3801 - 2", "123 + 49"]
E   assert '  3801      ...--    -----\n' == '  3801      ...----    -----'
E     Skipping 36 identical leading characters in diff, use -v to show
E     - --    -----
E     + --    -----
E     ?            +

/home/runner/boilerplate-arithmetic-formatter-4/test_module.py:77: AssertionError

There’s error, that function didn’t return expected string

E   assert '  3801      ...--    -----\n' == '  3801      ...----    -----'
E     Skipping 36 identical leading characters in diff, use -v to show
E     - --    -----
E     + --    -----
E     ?            +

If you look closer at the output you will see there one additional character, in what function returned, but it shouldn’t be there.

3

I’ll go through it once again… the output is the second code block right? And I’m assuming its the one after ‘assert’ till the last + sign?

4

I think the first one is returned by the function, the latter is the expected by test.

5

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