As pointed out by @gvanrossum in https://github.com/python/typing/issues/1096
Improves type inference in cases when we know that mode is
OpenBinaryMode, but don't know anything more specific:
```
def my_open(name: str, write: bool):
mode: Literal['rb', 'wb'] = 'wb' if write else 'rb'
with open(name, mode) as f:
reveal_type(f) # previously typing.IO[Any], now typing.BinaryIO
```
You may be tempted into thinking this is some limitation of type
checkers. mypy does in fact have logic for detecting if we match
multiple overloads and union-ing up the return types of matched
overloads. The problem is the last overload interferes with this logic.
That is, if you remove the fallback overload (prior to this PR), you'd get
"Union[io.BufferedReader, io.BufferedWriter]" in the above example.
Co-authored-by: hauntsaninja <>
On the same lines as #7419
These are all imports that are not used within bs4/__init__.py
My main interest here is in exposing NavigableString
Co-authored-by: hauntsaninja <>
This is generally useful. It's also imported in the source without being
used in bs4/__init__.py which in well maintained packages is a pretty
good marker of intention to export
Co-authored-by: hauntsaninja <>
Some distributions can't be tested with stubtest for a variety of
reasons or because of bugs in stubtest. This key:
* let's us keep metadata about a distribution in one place,
* prevents us from modifying the scripts because of issues with a
specific distribution, and
* will trigger tests if only the key is changed.
The argument is_dst of the functions StaticTzInfo.localize and
StaticTzInfo.normalize are ignored, and only present for compatibility with
DstTzInfo. The functions in DstTzInfo also accepts None, so for compatibility,
StaticTzInfo should accept them as well.
[^1] 2ed682a7c4/src/pytz/tzinfo.py (L112)
This function was mistakenly typed as `Callable[[Property], object] |
None`, however the actual function accepts two parameters of type
`Property, value`. The value can be of any type. Strictly speaking, the
type corresponds to the type of the property which is defined at runtime.
Fixes#7103
