ycb_sphinx_pr9258

what a new run launched now would send

[RFE] Support union types specification using | (vertical bar/pipe)
Please add a support for specifying multiple types acceptable for a parameter/attribute/variable.
Use case:
Imagine that there is a function that accepts both `bytes` and `str`. The docstring would look like:

``` restructuredtext
def foo(text):
    """Bar

    :param text: a text
    :type text: bytes | str

    """
```

Such a syntax is already supported by e.g. [PyCharm](https://www.jetbrains.com/pycharm/help/type-hinting-in-pycharm.html).

Work only inside this repository checkout. Make the code change the task
describes, keeping the diff focused — no drive-by refactors.

When you are done, leave your changes committed or in the working tree;
they are collected automatically.

Stay on this snapshot checkout (`task/ycb_sphinx_pr9258`). Never checkout, pull, or rebase onto `main`. That branch is a README-only orphan.
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