Question

mcve：

d1 = {"a":1}
d2 = {"b":2}
import json
with open('test2.json','w+') as file:
     for d in [d1,d2]:
             json.dump(d,file)

test2.json内容：

{"a": 1}{"b": 2}

所需结果：

[{"a": 1},{"b": 2}]

我该如何实现？

Answer 1

d1 = {"a":1}
d2 = {"b":2}
import json

array = [json.dumps(d) for d in [d1,d2]]

然后将数组写入文件

Answer 2

相反，创建一个列表，然后直接转储该列表。

with open('test2.json','w+') as file:
     d = [d1, d2]
     json.dump(d,file)

Answer 3

尝试

d1 = {"a":1}
d2 = {"b":2}
import json
tab = [d1, d2]
with open('test2.json','w+') as file:
    json.dump(tab ,file)

Answer 4

使用列表并将两个字典都附加到列表中，然后将列表写入文件中。

d1 = {"a":1}
d2 = {"b":2}
import json
with open('test2.json','w+') as file:
     for d in [d1,d2]:
             list1 = []
             list1.append(d1)
             list1.append(d2)
             json.dump(list1,file)

Answer 5

尝试一下

d1 = {"a":1}
d2 = {"b":2}
import json
with open('test2.json','w+') as file:
    json.dump([d1,d2],file)

Answer 6

字典列表已经是一个json可序列化的对象，因此只需序列化所需的整个对象即可

import json
with open('test2.json','w+') as file:
    json.dump([{"a":1}, {"b":2}],file)

使用json.dump创建包含json数组的有效json文件

6 个答案: