Question

我收到一个以类似方式构建的JSON文件：

{"Value1" : "1", "Value2" : "2", "Value3" : "3"},
{"Value4" : "4", "Value5" : "5", "Value5" : "5"}

不幸的是，我无法控制如何解析此JSON。因此，我需要删除引号，因此整数不会被视为字符串，因此：

{"Value1" : 1, "Value2" : 2, "Value3" : 3},
{"Value4" : 4, "Value5" : 5, "Value5" : 5}

我觉得这可以用正则表达式来实现（虽然它可能有点“脏”），但我不知道如何去做。有什么建议？编辑：所有值都是JSON文件中的整数。

Answer 1

我完全正确地做事，但是使用json解析JSON文件，转换和往返而不明确知道它的结构听起来像一团糟。所以，这是你所追求的快速和肮脏的正则表达式解决方案：

import re
with open("data.json") as inp:
    lines = inp.readlines()

with open("clean.json", "w") as output:
    for line in lines:
        output.write(re.sub(r'"(\d+)"', r"\1", line))

Answer 2

解决方案代码：

#include<iostream>
#include<iomanip>

using namespace std;

int main() 
{
    //declare variables
    int n = 0;
    int counter = 0;
    double score = 0.0;
    double total = 0.0;
    double avg = 0.0;
    double scoreTotal = 0.0;
    double totalTotal = 0.0;


    //Prompt user for number of assignments
    cout << "How many assignments are there? ";
    cin >> n;

    counter = 0;
    do
    { 
        counter++;

        //prompt user for score    */count up for each query*/
        cout << "What is the score for assignment number " << counter << "? ";
        cin >> score;

        //prompt user for totals         */count up for each total*/
        cout << "What is the total score available for assignment number " << counter << "? ";
        cin >> total;

    }
    while(counter < n);

    //calculate averages

    scoreTotal += score;
    totalTotal += total;

    avg = ((scoreTotal / totalTotal) * 100) / n; 

    //output how much it was out of and percent

    cout << "Your total is " << scoreTotal << " out of " << totalTotal << ", or " <<  avg << "%" << endl;

    return 0;
}

Answer 3

如何使用import json with open("input-file.json") as json_input_file: for line in json_input_file: # remove end of line comma (avoid removing in last line) if line.endswith(','): line = line[:-1] # parse values to ints line_json = {k: int(v) for k, v in json.loads(line).items()} # do something with json print line_json模块加载每一行？

import json
with open("input-file.json") as json_input_file:
    with open("result-file.json", 'w+') as json_file_result:
        for line in json_input_file:
            # remove end of line comma (avoid removing in last line)
            if line.endswith(','):
                line = line[:-1]
            # parse values to ints
            line_json = {k: int(v) for k, v in json.loads(line).items()}
            # do something with json
            json_file_result.write(json.dumps(json_line) + "\n")

如果要编写结果文件：

result-file.json

这将生成文件{"Value3": 3, "Value2": 2, "Value1": 1} {"Value5": 5, "Value4": 4}：

{{1}}

从JSON文件中删除引号

3 个答案: