animated movie-like text printing in the terminal

scroll_text.py

import argparse
import sys
from random import choice
from string import ascii_letters
from time import sleep

charset = ascii_letters + '!@#$%^&*()[]<>./m::~`|\\"'


def scroll_text(text: str, delay: float = 0.01, n_chars: int = 5) -> None:
    for line in text.split("\n"):
        current_text = ""
        for char in line:
            if char != " ":
                for _ in range(n_chars):
                    curr_char = f"\033[1m{choice(charset)}\033[0m"
                    print(current_text + curr_char, end="\r")
                    sleep(delay)
            current_text += char
        print(current_text)


def main():
    text = sys.stdin.read()
    arg_parser = argparse.ArgumentParser()
    arg_parser.add_argument("-d", "--delay", type=float, default=0.01)
    arg_parser.add_argument("-n", "--n_chars", type=int, default=5)
    args = arg_parser.parse_args()
    scroll_text(text, args.delay, args.n_chars)


if __name__ == "__main__":
    main()