Resize an iTerm* or xterm or ...

size.py

#!/usr/bin/env python2

# Generates a control sequence for resizing a window.  These are all
# described at https://invisible-island.net/xterm/ctlseqs/ctlseqs.html.

import click

@click.command()
@click.option('--rows', default=60, help='Number of rows.')
@click.option('--cols', default=80, help='Number of columns.')
def resize(rows, cols):
    print("\x1b[8;{rows};{cols}t".format(rows=rows, cols=cols))

if __name__ == '__main__':
    resize()