将json字符串值转换为int

Question

I want to convert a string value into int from a json.

Json

[
    {
        "date": "23.07. 16:59",
        "odd": "3.50",
        "change": "+0.05"
    },
    {
        "date": "23.07. 16:07",
        "odd": "3.45",
        "change": "-0.15"
    }
]

I tried to convert in this way json["change"] = int(json["change"]) but got TypeError: string indices must be integers

Answer 1

You have to do something like this:

Json=[
    {
        "date": "23.07. 16:59",
        "odd": "3.50",
        "change": "+0.05"
    },
    {
        "date": "23.07. 16:07",
        "odd": "3.45",
        "change": "-0.15"
    }
]
for i in range(len(Json)):
    Json[i]["change"]=int(float(Json[i]["change"]))

I guess you want to convert it to float because it will return 0 if you convert to int so you can simply try:

for i in range(len(Json)):
    Json[i]["change"]=int(float(Json[i]["change"]))

Answer 2

You have to convert change to a float and not int . Iterate over the contents of JSON list and do the conversion.

Here I have converted change to float .

import json
s = '''[
    {
        "date": "23.07. 16:59",
        "odd": "3.50",
        "change": "+0.05"
    },
    {
        "date": "23.07. 16:07",
        "odd": "3.45",
        "change": "-0.15"
    }
]'''

d = json.loads(s)
for i in d:
    i['change'] = float(i['change'])

[{'date': '23.07. 16:59', 'odd': '3.50', 'change': 0.05}, {'date': '23.07. 16:07', 'odd': '3.45', 'change': -0.15}]