CPSC 386 Clearing the terminal three different ways.

clear-terminal.py

#!/usr/bin/env python3
#
# Clearing the terminal three different ways.
#
# Gist https://gist.github.com/da88307f3b58b7a82bd26a8e998d6ce5
#

def simple():
    # you can make it fancier by figuring out how many rows
    # the terminal has and replace the hard-coded 24.
    # cursor stays at the bottom.
    print('\n' * 24)

def with_curses():
    # https://docs.python.org/3/howto/curses.html
    import curses
    def cdemo(scr):
        scr.clear()
        x = junk_strings()
        for i in range(22):
            scr.addstr(i, 0, x[i])
        # scr.addstr(0, 0, junk_string())
        scr.refresh()
        scr.addstr(22, 0, 'Press any key.')
        scr.getkey()
    curses.wrapper(cdemo)

def with_tty_clear():
    # cursur moves to the stop
    import curses
    import sys
    import os
    if sys.stdout.isatty():
        curses.setupterm()
        seq = curses.tigetstr('clear')
        os.write(sys.stdout.fileno(), seq)

def junk_strings():
    from random import choices
    l = list('abcdefghijklmnopqrstuvwzyz')
    l = l + list(map(lambda x: x.upper(), l)) + list('01234567890~!@#$%^&*()_+<>?:{}')
    x = [''.join(choices(l, k=80)) for _ in range(24)]
    return x
    
def print_junk():
    from random import choices
    l = list('abcdefghijklmnopqrstuvwzyz')
    l = l + list(map(lambda x: x.upper(), l)) + list('01234567890~!@#$%^&*()_+<>?:{}')
    for _ in range(24):
        print(''.join(choices(l, k=80)))

def main():
    from time import sleep
    print_junk()
    sleep(1)
    simple()
    sleep(1)
    
    
    print_junk()
    sleep(1)
    with_tty_clear()
    sleep(1)

    with_curses()

if __name__ == '__main__':
    main()