我将泡菜用作转储字典地址簿无法删除键

问题描述

我正在尝试创建一个地址簿，但是有一个问题：

1. 启动程序并添加键（联系人）时，添加后无法将其删除。
2. 只有重启程序（退出并启动）后，我才能删除按键（联系人）。
3. 当我尝试删除一个键（重新启动后）时，程序会删除所有键。

从命令行运行测试程序的示例：

[user@arch Python]$ python3 addres_book.py
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: l
{}
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: a
{}
Enter the name: alex
Enter the number: 122
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: r
{'alex': 122}
Enter the name of contact: alex
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: l
{'alex': 122}
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: a
{'alex': 122}
Enter the name: trump
Enter the number: 134
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: q
[user@arch Python]$ python3 addres_book.py
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: l
{'alex': 122,'trump': 134}
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: r
{'alex': 122,'trump': 134}
Enter the name of contact: trump
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit
Enter function: l
{}
What to do?:
l - full list
a - add a contact
r - remove contact
s - search contact
q - quit

程序代码：

import os
import pickle

addressbook = {}

home = os.environ['HOME']
path = home + '/.local/share/addressbook'
addressbookfile = path + '/' + 'addressbook.data'

if not os.path.exists(path):
    os.mkdir(path)

while True:
    print("What to do?: ")
    print("l - full list")
    print("a - add a contact")
    print("r - remove contact")
    print("s - search contact")
    print("q - quit")

    answer = str(input("Enter function: "))

    if answer == 'l':
        f = open(addressbookfile,'rb')
        storedfile = pickle.load(f)
        print(storedfile)

    elif answer == 'a':
        f = open(addressbookfile,'rb')
        storedfile = pickle.load(f)
        print(storedfile)
        name = str(input("Enter the name: "))
        number = int(input("Enter the number: "))
        addressbook[name] = number
        f = open(addressbookfile,'wb')
        pickle.dump(addressbook,f)
        f.close()

    elif answer == 'r':
        f = open(addressbookfile,'rb')
        storedfile = pickle.load(f)
        print(storedfile)
        f = open(addressbookfile,'rb')
        storedfile = pickle.load(f)
        delanswer = str(input("Enter the name of contact: "))
        del storedfile[delanswer]
        f = open(addressbookfile,f)
        f.close()

    elif answer == 's':
        f = open(addressbookfile,'rb')
        storedfile = pickle.load(f)
        search = input("Enter the data: ")
        searchresult = storedfile.get(search)
        print(searchresult)

    elif answer == 'q':
        break

    else:
        continue

解决方法

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