如 this StackOverflow question 中所述, json 中不允许有任何尾随逗号。比如这个

{
    "key1": "value1",
    "key2": "value2"
}

很好，但是这个

{
    "key1": "value1",
    "key2": "value2",
}

语法无效。

由于 this other StackOverflow question 中提到的原因, 在 Python 代码中使用尾随逗号是合法的(也许是鼓励的？)。我正在使用 Python 和 JSON，所以我希望能够在这两种类型的文件中保持一致。有没有办法让 json.loads 忽略尾随逗号？

最佳答案

快进到 2021 年，现在我们有了 https://pypi.org/project/json5/

引用自链接:

A Python implementation of the JSON5 data format.

JSON5 extends the JSON data interchange format to make it slightly more usable as a configuration language:

• JavaScript-style comments (both single and multi-line) are legal.
• Object keys may be unquoted if they are legal ECMAScript identifiers
• Objects and arrays may end with trailing commas.
• Strings can be single-quoted, and multi-line string literals are allowed.

用法与python内置的json模块一致:

>>> import json5
>>> json5.loads('{"key1": "{my special value,}",}')
{u'key1': u'{my special value,}'}

它确实带有警告:

Known issues

• Did I mention that it is SLOW?

加载启动配置等足够快。

https://stackoverflow.com/questions/23705304/