这个代码存在错误吗，能改一下吗？

mima_infos=[]
a=0
import os
def print_menu():
print("欢迎使用密码薄存储密码")
print("1.增加信息")
print("2.删除信息")
print("3.查询信息")
print("4.修改信息")
print("5.退出程序")
global a
a=int(input("请输入要选择的功能:"))
# if a not in(1,5):
# print("识别不到该功能，请重新再来:")
# print_menu()
def add_info():
id=input("请输入id位置：")
yem=input("请输入网页地址:")
mima=input("请输入密码:")
dict1={'id':id,'dizhi':yem,'mima':mima}
mima_infos.append(dict1.copy())
def del_info():
id=input("请输入要删除的id位置的值:")
find_flag=False
for line in mima_infos:
if line['id']==id:
find_flag=True
mima_infos.remove(line)
if find_flag==True:
print("已删除")
else:
print("您输入的id不存在.")

def select_info():
id=input("请输入要查找的id的位置:")
find_flag=False
for line in mima_infos:
if line['id']==id:
find_flag=True
print(line['id'],line['dizhi'],line['mima'],sep=" ")

if find_flag==True:
    print("已显示")
else:
    print("您输入的id不存在.")

def recover_info():
id = input("请输入要修改的id的位置:")
find_flag = False
for line in mima_infos:
if line['id'] == id:
find_flag = True
new_dizhi=input("请输入新的网页url:")
new_mima=input("请输入新的密码:")
line['dizhi']=new_dizhi
line['mima']=new_mima
print(line['id'],line['dizhi'],line['mima'],sep=" ")

if find_flag == True:
    print("已修改")
else:
    print("您输入的id不存在.")

def exitt():
file=open('mima.txt','w+')
for i in mima_infos:
for value in i.values():
file.write(value)
file.write(" ")
file.write('\n')

file.close()
os._exit(0)

def main():
file=open('mima.txt','r+')
content=file.readlines()

global mima_infos
for i in content:
    j=i.split(" ",2)

    dict2={'id':j[0],'dizhi':j[1],'mima':j[2]}
    mima_infos.append(dict2.copy())
file.close()
while True:
    print_menu()
    if a==1:
        add_info()
    if a==2:
        del_info()
    if a==3:
        select_info()
    if a==4:
        recover_info()
    if a==5:
        exitt()

main()

缩进有很大问题

mima_infos = []
a = 0
import os


def print_menu():
    global a
    print("欢迎使用密码薄存储密码")
    print("1.增加信息")
    print("2.删除信息")
    print("3.查询信息")
    print("4.修改信息")
    print("5.退出程序")
    a = int(input("请输入要选择的功能:"))


# if a not in(1,5):
# print("识别不到该功能，请重新再来:")
# print_menu()
def add_info():
    id = input("请输入id位置：")
    yem = input("请输入网页地址:")
    mima = input("请输入密码:")
    dict1 = {'id': id, 'dizhi': yem, 'mima': mima}
    mima_infos.append(dict1.copy())

def del_info():
    id = input("请输入要删除的id位置的值:")
    find_flag = False
    for line in mima_infos:
        if line['id'] == id:
            find_flag = True
            mima_infos.remove(line)
    if find_flag == True:
        print("已删除")
    else:
        print("您输入的id不存在.")

def select_info():
    id = input("请输入要查找的id的位置:")
    find_flag = False
    for line in mima_infos:
        if line['id'] == id:
            find_flag = True
        print(line['id'], line['dizhi'], line['mima'], sep=" ")
    if find_flag == True:
        print("已显示")
    else:
        print("您输入的id不存在.")


def recover_info():
    id = input("请输入要修改的id的位置:")
    find_flag = False
    for line in mima_infos:
        if line['id'] == id:
            find_flag = True
    new_dizhi = input("请输入新的网页url:")
    new_mima = input("请输入新的密码:")
    line['dizhi'] = new_dizhi
    line['mima'] = new_mima
    print(line['id'], line['dizhi'], line['mima'], sep=" ")
    if find_flag == True:
        print("已修改")
    else:
        print("您输入的id不存在.")


def exitt():
    file = open('mima.txt', 'w+')
    for i in mima_infos:
        for value in i.values():
            file.write(value)
    file.write(" ")
    file.write('\n')
    file.close()
    os._exit(0)


def main():
    file = open('mima.txt', 'r+')
    content = file.readlines()
    global mima_infos
    for i in content:
        j = i.split(" ", 2)
        dict2 = {'id': j[0], 'dizhi': j[1], 'mima': j[2]}
        mima_infos.append(dict2.copy())
    file.close()
    while True:
        print_menu()
        if a == 1:
            add_info()
        if a == 2:
            del_info()
        if a == 3:
            select_info()
        if a == 4:
            recover_info()
        if a == 5:
            exitt()
main()