Ivan 5b9290a449 Fix UnionType type var replacement (#25566) ...

[langchain_core] Fix UnionType type var replacement

- Added types.UnionType to typing.Union mapping

Type replacement cause `TypeError: 'type' object is not subscriptable`
if any of union type comes as function `_py_38_safe_origin` return
`types.UnionType` instead of `typing.Union`

```python
>>> from types import UnionType
>>> from typing import Union, get_origin
>>> type_ = get_origin(str | None)
>>> type_
<class 'types.UnionType'>
>>> UnionType[(str, None)]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'type' object is not subscriptable
>>> Union[(str, None)]
typing.Optional[str]
```

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Co-authored-by: Chester Curme <chester.curme@gmail.com>

2024-08-22 14:22:09 -04:00

..

integration_tests

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unit_tests

Fix UnionType type var replacement (#25566)

2024-08-22 14:22:09 -04:00

__init__.py

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