python - 消除 JSON 文档中键值的前导和尾随反冲

Question

我有以下 JSON 结构。

"bent": "{
       \"ActiveT\": 6,
        \"ErrorM\": \"None\",
        \"Except\": \"None\",
        \"HadErr\": \"false\",
        \"HM\": 62,
        \"NHM\": 57,
        \"Parameter\": \"14331232706\",
        \"ReturnCode\": \"3050\",
        \"Severity\": \"info\",
        \"Timestamp\": \"Tue July0209: 58: 16NZST2015\",
        \"TId\": \"9891319709\",
        \"UserInfo\": \"Unknown\",
    }"

我想删除 JSON 结构中每个 key 和 value 开头和结尾的 \。我想要使用 python 正则表达式来做到这一点。

Answer 1

使用re.sub

>>> print re.sub(r'\\(?=")', '', string)
"bent": "{
       "ActiveT": 6,
        "ErrorM": "None",
        "Except": "None",
        "HadErr": "false",
        "HM": 62,
        "NHM": 57,
        "Parameter": "14331232706",
        "ReturnCode": "3050",
        "Severity": "info",
        "Timestamp": "Tue July0209: 58: 16NZST2015",
        "TId": "9891319709",
        "UserInfo": "Unknown",
    }

正则表达式解释

• \\ 匹配 \

• (?=") 正向预测。检查 \ 后面是否跟着 "

  <

• 将其替换为空字符串。

<小时/>

或

使用string.replace

>>> print string.replace('\\"', '"')
"bent": "{
       "ActiveT": 6,
        "ErrorM": "None",
        "Except": "None",
        "HadErr": "false",
        "HM": 62,
        "NHM": 57,
        "Parameter": "14331232706",
        "ReturnCode": "3050",
        "Severity": "info",
        "Timestamp": "Tue July0209: 58: 16NZST2015",
        "TId": "9891319709",
        "UserInfo": "Unknown",
    }