一个未完成的小东西

import os
import sys 
path_py = os.path.split( os.path.realpath( sys.argv[0] ) )[0] #脚本所在目录
path_ID_list = path_py + "/ID_list/"							#名单文件所在目录
ID_list_all = os.listdir(path_ID_list)						#名单文件列表


def fuc_9():
	print("\n------welcome------")
	print("1.成员管理\n2.时间查询")
	print("3.名单文件管理\n4.帮助")
	print("0.退出\n")
	a = input("输入:")
	def choice_0(a):
		if a == "1":
			fuc_1()
		elif a == "2":
			fuc_2()
		elif a == "3":
			fuc_3()	
		elif a == "4":
			help_4()
		elif a == "0":
			exit_0()
		else :
			print("请重新输入正确的选项：")
			a = input("输入:")
			choice_0(a)
	choice_0(a)


def exit_0():
	return 0

#------------------------------------------#
def fuc_1():
	print("-------------------")
	print("若所要编辑的成员名单文件不存在")
	print("请返回首页进入名单文件管理功能")
	print("1.1录入新成员")
	print("1.2查询成员信息")
	print("1.3更改成员信息")
	print("1.4删除成员信息\n")
	print("9.返回首页")
	print("0.退出\n")
	a = input("输入:")
	def choice_1(a):
		if a == "1" or a == "1.1" :
			fuc_1_1()
		elif a == "2" or a == "1.2":
			fuc_1_2()
		elif a == "3" or a == "1.3":
			fuc_1_3()	
		elif a == "4" or a == "1.4":
			fuc_1_4()
		elif a == "0":
			exit_0()
		elif a == "9":
			fuc_9()
		else :
			print("请重新输入正确的选项：")
			a = input("输入:")
			choice_1(a)
	choice_1(a)


def fuc_1_1():
	print("选择成员名单：" + str(ID_list_all))#输出所有成员名单文件
	#bug
	def is_ID_list():
		a = input("输入:")
		a = str(path_ID_list) + a
		if os.path.isfile(a) == False:
			print("请重新输入正确的选项：")
			is_ID_list()
		else:
			return a
	a = is_ID_list()
	print (a)
	#bug
	def ID_write(a):
		f = open(a, 'w+')
		Wr = input("成员姓名：")
		f.write(Wr + " ")
		Wr = input("年级：")
		f.write(Wr + " ")
		Wr = input("所在学院：")
		f.write(Wr + " ")
		Wr = input("部门：")
		f.write(Wr + " ")
		Wr = input("分组：")
		f.write(Wr + " \n" )
		f.flush()
		f.close()
		f = open(a, 'r')
		x = f.readlines()
		print("请确认所输入的信息：")
		print(str(x[len(x)-1])) 
		Y_N = input("信息是否正确   Y/N : ")
		def Yes_No(Y_N):
			if Y_N == "y" or Y_N == "Y":
				f.flush()
				f.close()
				print("新成员信息成功录入")
				fuc_9()
			elif Y_N == "n" or Y_N == "N":
				del x[len(x)-1]
				print("")
				ID_write()
			else:
				print("请重新输入正确的选项：")
				Y_N = input("输入:")
				Yes_No(Y_N)
		Yes_No(Y_N)
	ID_write(a)

	
def fuc_1_2():
	a = input("输入:")
def fuc_1_3():
	a = input("输入:")
def fuc_1_4():
	a = input("输入:")

#------------------------------------------#
def fuc_2():
	print("-------------------")
	print("2.1按时间查询")
	print("2.2按名单查询\n")
	print("9.返回首页")
	print("0.退出程序\n")
	a = input("输入:")
	def choice_2(a):
		if a == "1":
			fuc_1_1()
		elif a == "2":
			fuc_1_2()
		elif a == "0":
			exit_0()
		elif a == "9":
			fuc_9()
		else :
			print("请重新输入正确的选项：")
			a = input("输入:")
			choice_2(a)
	choice_2(a)
def fuc_2_1():
	a = input("输入:")
def fuc_2_2():
	a = input("输入:")

#------------------------------------------#
def fuc_3():
	print("-------------------")
	print("成员名单文件列表：\n") #输出所有成员名单文件名 
	print("3.1新建成员名单文件")
	print("3.2总览成员名单文件")
	print("3.3修改成员名单文件")
	print("3.4删除成员名单文件\n")
	print("9.返回首页")
	print("0.退出\n")
	a = input("输入:")
	def choice_3(a):
		if a == "1" or a == "3.1" :
			fuc_3_1()
		elif a == "2" or a == "3.2":
			fuc_3_2()
		elif a == "3" or a == "3.3":
			fuc_3_3()	
		elif a == "4" or a == "3.4":
			fuc_3_4()
		elif a == "0":
			exit_0()
		elif a == "9":
			fuc_9()
		else :
			print("请重新输入正确的选项：")
			a = input("输入:")
			choice_3(a)
	choice_3(a)
def fuc_3_1():
	a = input("输入:")
def fuc_3_2():
	a = input("输入:")
def fuc_3_3():
	a = input("输入:")
def fuc_3_4():
	a = input("输入:")

#------------------------------------------#
def help_4():
	print("-------------------")
	#在屏幕上显示完整帮助文档
	
	print("0.退出\n")

fuc_9()