假設我有一本這樣的字典：
{
"test1": [{
"key1": "123",
"key2": "456",
"key3": null,
"key4": "Book1"
}, {
"key1": "123",
"key2": "456",
"key3": null,
"key4": "Book2"
}, {
"key1": "12311",
"key2": "45678",
"key3": null,
"key4": "Book1"
}, {
"key1": "123",
"key2": "456",
"key3": null,
"key4": "Book4"
}, {
"key1": "12322",
"key2": "45690",
"key3": null,
"key4": "Book1"
}
]
}
我想要的是擁有另一本字典，其中我只有某些鍵等于某事物的元素（在我的情況下，我想保留 key4 = Book1 的所有元素）我怎樣才能擁有另一本看起來像這樣的字典：
{
"test1": [{
"key1": "123",
"key2": "456",
"key3": null,
"key4": "Book1"
}, {
"key1": "12311",
"key2": "45678",
"key3": null,
"key4": "Book1"
}, {
"key1": "12322",
"key2": "45690",
"key3": null,
"key4": "Book1"
}
]
}
uj5u.com熱心網友回復：
首先，python中沒有null這樣的東西，它是None。其次，這可能會以您想要的方式作業
newDict = {"test1": []}
for i in oldDict["test1"]:
if i['key4'] == 'Book1':
newdict["test1"].append(i)
uj5u.com熱心網友回復：
簡單的一個班輪：
{"test1": [d for d in data["test1"] if d["key4"] == "Book1"]}
假設您呼叫初始 dict data。
轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/375710.html
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