python - 将 python dict 转换为带有单反斜杠和双引号的字符串

Question

我在 python 中有一个如下的字典

test_dict  = {'A': 'apple', 'B': 12345000, 'c': '2020-07-13 03:04:21.752566'}

我需要按如下方式格式化 json 输出，包括反斜杠和注释，int 值不需要反斜杠和注释

{
   "zz":"zz",
   "xx":"x",
   "rawData":"{\"A\":\"apple\",\"B\":12345000,\"c\":\"2020-07-13 03:04:21.752566\"}"

}

我实现了以下功能

def construct_raw(abc):
    start = "\"{"
    end = "}"
    delimiter = ","
    dict_len = len(abc)
    cnt = 0
    for k, v in abc.items():
        cnt = cnt + 1
        if type(v) is str:
            n = "\\\"" + v + "\\\""
        else:
            n = str(v)
        start = start + "\\\"" + k + "\\\"" + ":" + n
        if cnt != dict_len:
            start = start + delimiter

    start = start + end + "\""
    return start

这为 rawData 产生了以下输出

"{\\"A\\":\\"apple\\",\\"B\\":12345000,\\"c\\":\\"2020-07-13 03:04:21.752566\\"}"

但这会导致字符串中出现双反斜杠如何解决这个问题？

Answer 1

使用json.dumps(test_dict)

In [123]: a = {}

In [124]: a["zz"] = "zz"

In [125]: a["xx"] = "x"

In [126]: a["rawData"] = json.dumps(test_dict)

In [127]: with open("a.json","w") as f:
     ...:     json.dump(a,f)
     ...:

当您打开 a.json 时，您将看到反斜杠

{"zz": "zz", "xx": "x", "rawData": "{\"A\": \"apple\", \"B\": 12345000, \"c\": \"2020-07-13 03:04:21.752566\"}"}