`ET.Element.tag` does not allow comparision with `ET.Comment`

To Reproduce

import xml.etree.ElementTree as ET

parser = ET.XMLParser(target=ET.TreeBuilder(insert_comments=True))
doc = ET.ElementTree().parse("foo.xml", parser)
for el in doc.findall("*"):
    if el.tag is ET.Comment:     #  error: Non-overlapping identity check (left operand type: "str", right operand type: "Callable[[str | None], Element[Callable[..., Element[Any]]]]")  [comparison-overlap]
        print("Comment:", x.text)

Expected Behavior

el.tag should be allowed to be compared to ET.Comment

Actual Behavior

el.tag is constrained to str only and raises following comparision-overlap error when compared with ET.Comment:
# error: Non-overlapping identity check (left operand type: "str", right operand type: "Callable[[str | None], Element[Callable[..., Element[Any]]]]") [comparison-overlap]

This error started after upgrading from mypy 1.14 to 1.15, most likely caused by https://github.com/python/typeshed/pull/13349

Tbh this isn't exactly documented behaviour and parsing comments programmatically isn't exactly best practice either, but some times you are not in control of the xmls received and reading the tag is the the only way to identify the comments that i know.

Your Environment

• Mypy version used: 1.17
• Mypy command-line flags: mypy --strict test.py
• Python version used: 3.13

首先定位 xml.etree.ElementTree 的类型定义，并使用 Python 3.13 和 mypy 1.17 通过 --strict 运行所提供的 test.py 代码片段来复现问题。当 el.tag 与 ET.Comment 之间的身份比较不再产生 comparison-overlap，同时注释解析仍能得到准确表示时，即可完成。