urllib.parse.parse_qs should not parse a query string containing illegal characters

Bug report

Bug description:

urllib.parse.parse_qsl will happily parse a query string containing '#'.

from urllib.parse import parse_qsl
parse_qsl('foo=#', strict_parsing=True)

Output is [('foo', '#')] .

But 'foo=#' is an invalid query string according to RFC 3986. Similarly, '[', and ']' are excluded from the set of valid query characters, but parse_qsl parses strings like 'foo=[' and 'foo=]' . In the absence of any allocation of responsibility, this looks like a bug to me.

CPython versions tested on:

3.13

Operating systems tested on:

macOS

Linked PRs

• gh-152530

从 urllib.parse.parse_qsl 开始，检查查询字符如何根据 RFC 3986 进行验证。先查看现有的解析测试和链接的 PR gh-152530；当诸如 '#'、'[' 和 ']' 之类的非法字符按照已达成一致的行为得到一致处理，并由测试覆盖时，即视为完成。