处理来自用户的输入并将其保存为“子”对象，然后再打开它？

Question

嗨，我是一个新的编码，但想学习我写了这个cod，让用户插入一个输入，并应稍后将其保存为文本文件（.txt）与json，然后我想打开文件为（.txt）文件，以便以后能够修改所需的信息

保存用户信息时，文件内容如下所示：

{"Titel": "kalle"}{"Titel": "peter"}{"Titel": "kim"}{"Titel": "sena"}

但当我想用突击队打开文件时：

import json

with open('testtitel.txt') as f:
    json_data = json.load(f)

print(json_data)  

此文本将显示：

Traceback (most recent call last):
  File "openjson.py", line 4, in <module>
    json_data = json.load(f)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 340, in decode
    raise JSONDecodeError("Extra data", s, end)
json.decoder.JSONDecodeError: Extra data: line 1 column 19 (char 18)

有什么错，如果有人可以显示什么需要改变，并解释为我是新的编码我会添加代码以及

enter code

import json class infoCd(): def __init__(self, EnTitel): self.EnTitel = EnTitel # //load to json dic function sa simon def make_dict(self): the_dict = {"Titel":self.EnTitel} return the_dict def readFromDict(self, inputDict): self.EnTitel = inputDict["Titel"] def display_cd_details(self): print(" Title: {} ".format(self.EnTitel)) def see_details(self): with open('testtitel.txt') as json_file: testtitel = json.load(json_file) for p in testtitel: print(p) def save_cd_details(cd): with open('testtitel.txt', 'a') as txtfile: json.dump(cd.make_dict(), txtfile) def insert_cd_details(): counter = 0 lista = [] while(True): EnTitel = input("Insert a titel: ") counter+=1 Cd = infoCd(EnTitel ) lista.append(Cd) print(lista) save_cd_details(Cd) avslutaCd = input(" Do you still want to(j/n)") if (avslutaCd == "j"): print("JAAA") else: print("Nej") break return lista a = insert_cd_details() for cd in a: cd print(a) // code to open with open('testtitel.txt') as f: json_data = json.load(f) print(json_data)

Answer 1

您尝试解码的字符串不是有效的JSON。我想你想要这个：

[{"Titel": "kalle"}, {"Titel": "peter"}, {"Titel": "kim"}, {"Titel": "sena"}]