import curses, curses.textpad
def setup_input():
    inp = curses.newwin(8,55, 0,0)
    inp.addstr(1,1, "Please enter your username:")
    sub = inp.subwin(2,1)
    sub.border()
    sub2 = sub.subwin(3,2)
    global tb
    tb = curses.textpad.Textbox(sub2)
    inp.refresh()
    tb.edit(enter_is_terminate)

def enter_is_terminate(x):
    if x == 10:
        tb.do_command(7)
    tb.do_command(x)

setup_input()