Python - TypeError：字符串索引必須是整數 - Instagram機器人

Question

我正在使用自動喜歡圖片和關注人物的instagram機器人。我很難讓JSON正常工作。這裏是Python：

 # Make a list of users who are currently being followed, or have been followed before 
    already_followed = [] 
    for tile in tiles['present']: 
     already_followed.append(tile['user_id']) 
    for tile in tiles['past']: 
     already_followed.append(tile['user_id']) 

這是我的JSON文件：

{ 
    "present": { 
    "user": {} 
    }, 
    "past": { 
    "user": {} 
    } 
} 

這是錯誤：

File "Instagram-bot.py", line 95, in <module> 
    already_followed.append(tile['user_id']) 
TypeError: string indices must be integers 

如果你們有什麼事，讓我知道！

Answer 1

是，tile是字符串類型，即來自tiles['present']字典的關鍵字。

嘗試在代碼中打印變量tile的type。 例如

>>> a = 123 
>>> type(a) 
<type 'int'> 
>>> a = "123" 
>>> type(a) 
<type 'str'> 
>>> 

---

示例代碼：

tiles = { 
    "present": { 
    "user": {"user_id": 123} 
    }, 
    "past": { 
    "user": {"user_id": 456} 
    } 
} 

already_followed = [] 
for tile in tiles['present']: 
    already_followed.append(tiles['present'][tile]['user_id']) 

for tile in tiles['past']: 
     already_followed.append(tiles['past'][tile]['user_id']) 


print "already_followed:-", already_followed 

輸出：

vivek@vivek:~/Desktop/stackoverflow$ python 5.py 
already_followed:- [123, 456]