update to python fastpi

Backend/venv/lib/python3.12/site-packages/starlette/_utils.py

@@ -0,0 +1,74 @@
+import asyncio
+import functools
+import sys
+import typing
+from types import TracebackType
+
+if sys.version_info < (3, 8):  # pragma: no cover
+    from typing_extensions import Protocol
+else:  # pragma: no cover
+    from typing import Protocol
+
+
+def is_async_callable(obj: typing.Any) -> bool:
+    while isinstance(obj, functools.partial):
+        obj = obj.func
+
+    return asyncio.iscoroutinefunction(obj) or (
+        callable(obj) and asyncio.iscoroutinefunction(obj.__call__)
+    )
+
+
+T_co = typing.TypeVar("T_co", covariant=True)
+
+
+# TODO: once 3.8 is the minimum supported version (27 Jun 2023)
+# this can just become
+# class AwaitableOrContextManager(
+#     typing.Awaitable[T_co],
+#     typing.AsyncContextManager[T_co],
+#     typing.Protocol[T_co],
+# ):
+#     pass
+class AwaitableOrContextManager(Protocol[T_co]):
+    def __await__(self) -> typing.Generator[typing.Any, None, T_co]:
+        ...  # pragma: no cover
+
+    async def __aenter__(self) -> T_co:
+        ...  # pragma: no cover
+
+    async def __aexit__(
+        self,
+        __exc_type: typing.Optional[typing.Type[BaseException]],
+        __exc_value: typing.Optional[BaseException],
+        __traceback: typing.Optional[TracebackType],
+    ) -> typing.Union[bool, None]:
+        ...  # pragma: no cover
+
+
+class SupportsAsyncClose(Protocol):
+    async def close(self) -> None:
+        ...  # pragma: no cover
+
+
+SupportsAsyncCloseType = typing.TypeVar(
+    "SupportsAsyncCloseType", bound=SupportsAsyncClose, covariant=False
+)
+
+
+class AwaitableOrContextManagerWrapper(typing.Generic[SupportsAsyncCloseType]):
+    __slots__ = ("aw", "entered")
+
+    def __init__(self, aw: typing.Awaitable[SupportsAsyncCloseType]) -> None:
+        self.aw = aw
+
+    def __await__(self) -> typing.Generator[typing.Any, None, SupportsAsyncCloseType]:
+        return self.aw.__await__()
+
+    async def __aenter__(self) -> SupportsAsyncCloseType:
+        self.entered = await self.aw
+        return self.entered
+
+    async def __aexit__(self, *args: typing.Any) -> typing.Union[None, bool]:
+        await self.entered.close()
+        return None