Typing effect Python

Question

I was working on a typing-like effect for printing strings in Python. My code is below:

import time, sys
def type(str):
    for letter in(str):
        sys.stdout.write(letter)
        time.sleep(0.03)
        sys.stdout.flush()
    print()

And this code works fine, but instead of using os.system('clear'), I would like the letters to "disappear backwards", sort of like how it prints letter by letter, except I want the string to the disappear letter by letter. Is this possible?