我不知道如何表達標題，但基本上我有以下幾點：{ "restaurantName": "Restaurant 1", "restaurantLink": "Link 1", "restaurantType": "Type 1", "restaurantAddress": "Address 1", "dateRetrieved": "14-11-2018", "review": { "reviewer": "Reviewer 1", "reviewDetail": "Review Detail 1" }}我正在嘗試向review評論鍵添加新內容，因此最終輸出將如下所示，具體取決于餐廳有多少評論：{ "restaurantName": "Restaurant 1", "restaurantLink": "Link 1", "restaurantType": "Type 1", "restaurantAddress": "Address 1", "dateRetrieved": "14-11-2018", "review": [ { "reviewer": "Reviewer 1", "reviewDetail": "Review Detail 1" }, { "reviewer": "Reviewer 2", "reviewDetail": "Review Detail 2" },{ "reviewer": "Reviewer 3", "reviewDetail": "Review Detail 3" }, ... ... ]}我目前的代碼是：for review in reviews: HungrygowhereItem['review'] = { [ 'reviewer': reviewer, 'reviewDetail': reviewDetail ] }HungrygowhereItem現(xiàn)有字典在哪里它只會存儲Reviewer 1和Review Detail 1。我如何將新列表附加到字典中？
3 回答
aluckdog
TA貢獻1847條經驗 獲得超7個贊
如果我理解正確，您希望將值附加到現(xiàn)有字典中的數(shù)組，例如以下字典：
_dict = {
"restaurantName": "Restaurant 1",
"restaurantLink": "Link 1",
"restaurantType": "Type 1",
"restaurantAddress": "Address 1",
"dateRetrieved": "14-11-2018",
"review": [
{
"reviewer": "Reviewer 1",
"reviewDetail": "Review Detail 1"
},
{
"reviewer": "Reviewer 2",
"reviewDetail": "Review Detail 2"
},{
"reviewer": "Reviewer 3",
"reviewDetail": "Review Detail 3"
}
]
}
將價值附加到審查中：
_dict['review'].append( {
"reviewer": "Reviewer 4",
"reviewDetail": "Review Detail 4"
})
在您的情況下，如果 HungrygowhereItem 是字典：
for review in reviews:
if 'review' in HungrygowhereItem:
HungrygowhereItem['review'].append({
'reviewer': reviewer,
'reviewDetail': reviewDetail
})
else:
HungrygowhereItem['review'] = [{
'reviewer': reviewer,
'reviewDetail': reviewDetail
}]
人到中年有點甜
TA貢獻1895條經驗 獲得超7個贊
首先，將鍵的值設為'review'列表。
>>> restaurant = {
...: "restaurantName": "Restaurant 1",
...: "restaurantLink": "Link 1",
...: "restaurantType": "Type 1",
...: "restaurantAddress": "Address 1",
...: "dateRetrieved": "14-11-2018",
...: "review": {
...: "reviewer": "Reviewer 1",
...: "reviewDetail": "Review Detail 1"
...: }
...:}
>>>
>>> restaurant['review'] = [restaurant['review']]
>>> restaurant['review']
>>> [{'reviewDetail': 'Review Detail 1', 'reviewer': 'Reviewer 1'}]
現(xiàn)在您可以附加到該列表。
>>> reviews = [{"reviewer": "Reviewer 2",
...: "reviewDetail": "Review Detail 2"},
...: {"reviewer": "Reviewer 3",
...: "reviewDetail": "Review Detail 3"}]
...:
>>> for review in reviews:
...: restaurant['review'].append(review)
...:
>>> restaurant['review']
>>>
[{'reviewDetail': 'Review Detail 1', 'reviewer': 'Reviewer 1'},
{'reviewDetail': 'Review Detail 2', 'reviewer': 'Reviewer 2'},
{'reviewDetail': 'Review Detail 3', 'reviewer': 'Reviewer 3'}]
如果您可以修復上游代碼，您也可以restaurant在defaultdict沒有'review'密鑰的情況下創(chuàng)建一個。
>>> from collections import defaultdict
>>> restaurant = {
...: "restaurantName": "Restaurant 1",
...: "restaurantLink": "Link 1",
...: "restaurantType": "Type 1",
...: "restaurantAddress": "Address 1",
...: "dateRetrieved": "14-11-2018"
...:}
>>>
>>> restaurant = defaultdict(list, restaurant)
>>> reviews = [{"reviewer": "Reviewer 1",
...: "reviewDetail": "Review Detail1"},
...: {"reviewer": "Reviewer 2",
...: "reviewDetail": "Review Detail 2"},
...: {"reviewer": "Reviewer 3",
...: "reviewDetail": "Review Detail 3"}]
...:
>>> restaurant['reviews'].extend(reviews)
>>> restaurant['reviews']
>>>
[{'reviewDetail': 'Review Detail1', 'reviewer': 'Reviewer 1'},
{'reviewDetail': 'Review Detail 2', 'reviewer': 'Reviewer 2'},
{'reviewDetail': 'Review Detail 3', 'reviewer': 'Reviewer 3'}]
作為替代restaurant是一個defaultdict，你可以只設置鍵值'reviews'添加任何評論之前，空單。
桃花長相依
TA貢獻1860條經驗 獲得超8個贊
你必須從一些不同的review結構開始：
restaurant = {
...,
"review": []
}
請注意，這review是此處的列表。
因此，向該列表添加評論只是一個基本的列表操作：
restaurant['review'].append({
"reviewer": "Reviewer 1",
"reviewDetail": "Review Detail 1"
})
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