def action_lines(action,
ln1,
ln2,
go_to_line="c-g",
select_line_down="s-down",
wait="",
upon_arrival=""):
num_lines = max(int(ln2) - int(ln1) + 1, int(ln1) -
int(ln2) + 1) if ln2 else 1
top_line = min(int(ln2), int(ln1)) if ln2 else int(ln1)
command = Key(go_to_line) + Text(str(top_line)) + Key(
"enter%s, %s%s%s:%s, %s" %
(wait, upon_arrival, select_line_down, wait, str(num_lines), action))
command.execute()
