chore(curriculum): acknowledge exceptions in Luhn algorithm (#54753)

freeCodeCamp · May 14, 2024 · de81912 · de81912
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diff --git a/...bers-and-strings-by-implementing-the-luhn-algorithm/65687b182c2a8fb1470e0b97.md b/...bers-and-strings-by-implementing-the-luhn-algorithm/65687b182c2a8fb1470e0b97.md
@@ -9,6 +9,8 @@ dashedName: step-20
 
 Within the `for` loop, use the `+=` operator to add the `digit` to the `sum_of_odd_digits` variable.
 
+Doing this your script throws a `TypeError` because you are trying to add a string to an integer, but don't worry, you will learn more about how to make it work in the next step.
+
 # --hints--
 
 You should have `sum_of_odd_digits += digit` within the `for` loop.