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: If letter is an empty string, the loop would run forever; we return the original word immediately.

: word[:index] takes everything before the letter, and word[index + len(letter):] takes everything after it. Adding them together effectively "deletes" the unwanted part. 7.6 / 10 123...

While the CodeHS exercise often requires the manual loop approach above, the simplest way to do this in standard Python is using the .replace() method: : If letter is an empty string, the

The prompt likely refers to from the CodeHS Python curriculum. This exercise requires you to write a function that removes every instance of a specific "letter" (or substring) from a given word. Correct Python Implementation While the CodeHS exercise often requires the manual

: This method returns the starting index of the first occurrence of letter . If it isn't found, it returns -1 .