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

Please see my minor suggestions for future improvement:

• In places like:

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

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

• Instead of is_case_sensitive == False:, you can use if not is_case_sensitive:. In Python, booleans already evaluate directly in conditions. That way your code is cleaner
• 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.