When you are asked to create a "text file" in an exercise or assignment, it is because we need answers from you that aren't Python programs. You can create a text file in IDLE. Just open a "New Window" like you would when creating a Python program. When you save the file, save it as .txt instead of .py.

That's it. Just answer the questions in that file and save it.

Don't submit a Word document or anything else if asked for a text file. It won't be opened (or marked).