Python将多个数据导出到json文件

Question

我正在使用python开发通讯录，并且正在尝试将数据（名称，城镇和地址）保存到json文件中。

问题是，当它保存到json文件时，会在json文件中创建一个新对象

例子-

   {"Object1": {"Town": "town", "Address": "address"}}
   {"Object2": {"Town": "town", "Address": "address"}}

由于这种布局，每当尝试对其执行任何操作时都会收到此错误

错误-

    ValueError: Extra data: line 2 column 1 - line 2 column 55 (char 55 - 109) 

我怎样才能使我的json文件布局像这样

范例-

    {"Object1": {"Town": "town", "Address": "address", "Object2": {"Town": "town", "Address": "address"}}

这是我的代码-

import json

class Object:
    name = "Name"
    address = "Address"
    town = "Town"

    def return_info(self):
        dictionary = {self.name: {"Address": self.address, "Town": self.town}}
        return dictionary

    def __init__(self, entered_name, entered_town, entered_address):
        self.name = entered_name
        self.town = entered_town
        self.address = entered_address

def update(file):
    with open("data.json", "a") as outfile:
        json.dump(file, outfile)

new_object = Object("name", "town", "address")
update(new_object.return_info())

Answer 1

您可以仅将所有地址保留在字典中，然后转储到json文件中。

addressmap = {
    "Object1": {"town": "town", "address": "address"},
    "Object2": {"town": "town", "address": "address"}
}

with open("addresses.json", "w") as f:
    json.dump(addressmap, f, indent=4)

Answer 2

您想要的对象的示例意味着在Object1内Object1 Object2 ，而在我看来，您想要的是对象列表：

import json
dictlist = [{"Object1": {"Town": "town", "Address": "address"}},
            {"Object2": {"Town": "town", "Address": "address"}}]
with open("output.json", "w") as outfile:
  json.dump(dictlist, outfile)