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[英]How to create a JSON file from several dictionaries and one list in python
[英]How to create a json file from list in python?
我想用我的 python 代码中的列表创建一个 json 文件:
我有
arr_of_id_by_user = [1, 2, 3]
arr_of_wallet_amount = [100,3400,200]
我希望这可以在 json 文件中返回,例如
jsonfile = [{
"user" : 1,
"wallet amount": 100
},
{
"user" : 2,
"wallet amount": 3400
},
{
"user" : 3,
"wallet amount": 200
}]
有可能这样做吗? 我试图做一个这样的for
循环:
for elements in arr_of_id_by_user:
return jsonify({
"id": elements
})
和json.dumps()
但它不起作用......也许我必须用(user.value[0], wallet_amount.value[0])
做一个元组?
对于试图做相反事情的人: 如何从 JSON object 中创建 Python 列表?
我要感谢所有帮助过我并参与所有人学习的人。
将列表转换为字典列表并将其转储到文件中
arr_of_id_by_user = [1, 2, 3]
arr_of_wallet_amount = [100, 3400, 200]
with open('file.json', 'w') as file:
json.dump([{'user': id, 'wallet amount': amount} for id, amount in zip(arr_of_id_by_user, arr_of_wallet_amount)], file)
file.json
[{"user": 1, "wallet amount": 100}, {"user": 2, "wallet amount": 3400}, {"user": 3, "wallet amount": 200}]
另一个简单的解决方案,使用枚举:
import json
arr_of_id_by_user = [1, 2, 3]
arr_of_wallet_amount = [100,3400,200]
jsonfile=[]
for index, value in enumerate(arr_of_id_by_user):
jsonfile.append({
"user": value,
"waller_amount": arr_of_wallet_amount[index]
})
print (json.dumps(jsonfile, indent=4))
Python List to JSON Array
list_example = ["Mango", 1, 3,6, "Oranges"];
print(json.dumps(list_example))
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