Script to change the terminal width (passed by arg) from Python.

set_terminal_width.py

#!/usr/bin/env python
"""Script to change the terminal width (passed by arg) from Python."""
import argparse
import fcntl
import struct
import sys
import termios
from array import array
from typing import IO


# From https://stackoverflow.com/a/6420070/1165181
def set_terminal_size(fd: IO, n_rows: int, n_cols: int, x_pix: int = 0, y_pix: int = 0) -> None:
    size = struct.pack("HHHH", n_rows, n_cols, x_pix, y_pix)
    fcntl.ioctl(fd, termios.TIOCSWINSZ, size)  # noqa


def set_width(width: int, fd: IO = sys.stdin) -> None:
    # From tqdm's way of getting the terminal width.
    size = array('h', fcntl.ioctl(fd, termios.TIOCSWINSZ, '\0' * 8))  # noqa
    size[1] = width
    set_terminal_size(sys.stdin, *size)


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser()
    parser.add_argument('width')
    return parser.parse_args()


def main():
    args = parse_args()
    set_width(int(args.width))


if __name__ == '__main__':
    main()