Excellent work! Your code is clean and well-written. Your assignment 1 is complete – no changes needed.

Please see my suggestions for future improvement:

• In places like:

  if sorted(word_a.lower()) == sorted(word_b.lower()):
        return True
  else:
        return False

You can simplify this by directly returning the boolean expression:
return sorted(word_a.lower()) == sorted(word_b.lower())
This makes the code cleaner

• Instead of if is_case_sensitive == True:, you can use if is_case_sensitive:. In Python, booleans already evaluate directly in conditions. That way your code is cleaner. (if is_case_sensitive == False: -> if not is_case_sensitive:
• for if sorted(word_a.lower()) == sorted(word_b.lower()) and sorted(word_a) == sorted(word_b), Repeating sorted() is unnecessary; the first condition already covers case-insensitive comparison
• It’s good practice to add comments or brief documentation to your code so it’s easier for you to review and debug later, and for teammates to understand quickly.
• Quick reminder for future submissions — including a brief PR description is good practice, as it helps your "project-mate" quickly understand what’s going on.