Print the input values, it'll become evident why your code fails.

You can read in the task description: "...The other letters don't have power and are only victims."

letter 'a' was not specified in the intructions as a left side or right side letter but was still included in at least one test case, I suggest adding that 'letters not listed here may also be in the test cases' or remove the letter 'a' from the test cases [Python]

use a dictionary, assign left side as positive values and right side as negative values :v

It's fixed. You may need to reload the kata see my change.

Thanks for the report! @SadVanity made a mistake in the translation. The Sample Test cases are fixed. You may need to reload the kata to see my change.

The method name in the tests for the Java version has a spelling error and doesn't match the method in the Kata class.