python-画格子-有意思

# -*- coding:utf-8 -*-

def do_twice(f):

    f()

    f()

def do_four(f):

    do_twice(f)

    do_twice(f)

def one_four_one(f, g, h):

    f()

    do_four(g)

    h()

def print_plus():

    print '+',

def print_dash():

    print '-',

def print_bar():

    print '|',

def print_space():

    print ' ',

def print_end():

    print

def nothing():

    "do nothing"

def print1beam():

    one_four_one(nothing, print_dash, print_plus)

def print1post():

    one_four_one(nothing, print_space, print_bar)

def print4beams():

    one_four_one(print_plus, print1beam, print_end)

def print4posts():

    one_four_one(print_bar, print1post, print_end)

def print_row():

    one_four_one(nothing, print4posts, print4beams)

def print_grid():

    one_four_one(print4beams, print_row, nothing)

print_grid()