python - 密码管理器替换密码

Question

我想附加相同的网站帐户。但是当试图在同一个网站上保存多个帐户时，它是替换密码。我究竟做错了什么？这是我的代码：

def save():
    websites = website_entry.get()
    email = user_entry.get()
    passwords = password_entry.get()
    new_data = {
        websites: {
            "Email": email,
            "Password": passwords,
        }
    }

if len(websites) == 0 or len(email) == 0 or len(passwords) == 0:
    messagebox.showinfo(title="Oops!", message="Please give all the required information's")
else:
    try:
        with open("data.json", "r") as data_file:
            data = json.load(data_file)
    except FileNotFoundError:
        with open("data.json", "w") as data_file:
            json.dump(new_data, data_file, indent=4)
    else:
        data.update(new_data)

        with open("data.json", "w") as data_file:
            json.dump(data, data_file, indent=4)
    finally:
        user_entry.delete(0, END)
        website_entry.delete(0, END)
        password_entry.delete(0, END)

Answer 1

问题是data.json当您向其中添加新数据时，您是以写入模式而不是追加模式打开的：

with open("data.json", "w") as data_file:
    json.dump(data, data_file, indent=4)

相反，您应该data.json以附加模式打开以避免覆盖文件的现有内容：

with open("data.json", "a") as data_file:
    json.dump(data, data_file, indent=4)