注：并没有使用函数。
data = {: {: {: [, ], : [, ]}, : {}}, : {}}
exit_flag = exit_flag:
menu1 data:
(menu1)
choice1 = ()
choice1 data:
exit_flag:
menu2 data[choice1]:
(, menu2)
choice2 = ()
choice2 data[choice1]:
exit_flag:
menu3 data[choice1][choice2]:
(, menu3)
choice3 = ()
choice3 data[choice1][choice2]:
i data[choice1][choice2][choice3]:
(, i)
choice4 = ()
choice4 == :
choice4 == :
exit_flag = choice4 == :
(, )
exit_flag = choice4 == :
(, )
exit_flag = choice3 == :
choice3 == :
exit_flag = choice2 == :
choice2 == :
exit_flag = choice1 == :
exit_flag =本文出自 “90SirDB” 博客，请务必保留此出处http://90sirdb.blog.51cto.com/8713279/1916141
原文地址：http://90sirdb.blog.51cto.com/8713279/1916141
