Incompatibility with quart-cors

[vagran]

Description

It seems to be incompatible with quart-cors.

app = Quart(__name__)
app = cors(app, allow_origin="*")

@app.get("/projectInfo")
async def GetProjectInfo(curProject: injector.Inject[CurProject]):
 ...

...

quart_injector.wire(app, configure)
app.run(host=config.server.address, port=config.server.port, debug=True)

produces this error:

[ERROR] Error in ASGI Framework
Traceback (most recent call last):
 File ".venv/lib/python3.13/site-packages/hypercorn/asyncio/task_group.py", line 28, in _handle
 await app(scope, receive, send, sync_spawn, call_soon)
 File ".venv/lib/python3.13/site-packages/hypercorn/app_wrappers.py", line 34, in __call__
 await self.app(scope, receive, send)
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1735, in __call__
 await self.asgi_app(scope, receive, send)
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1761, in asgi_app
 await asgi_handler(receive, send)
 File ".venv/lib/python3.13/site-packages/quart/asgi.py", line 60, in __call__
 raise_task_exceptions(done)
 ~~~~~~~~~~~~~~~~~~~~~^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/utils.py", line 186, in raise_task_exceptions
 raise task.exception()
 File ".venv/lib/python3.13/site-packages/quart/asgi.py", line 110, in handle_request
 response = await _handle_exception(self.app, error)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/asgi.py", line 408, in _handle_exception
 raise error
 File ".venv/lib/python3.13/site-packages/quart/asgi.py", line 108, in handle_request
 response = await self.app.handle_request(request)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1468, in handle_request
 return await self.handle_exception(error)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1464, in handle_request
 return await self.full_dispatch_request(request_context)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1503, in full_dispatch_request
 return await self.finalize_request(result, request_context)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1630, in finalize_request
 response = await self.process_response(response, request_context)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart/app.py", line 1691, in process_response
 response = await self.ensure_async(function)(response)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/quart_injector/wiring.py", line 85, in view
 return await container.call_with_injection(async_func, None, args, kwargs)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File ".venv/lib/python3.13/site-packages/injector/__init__.py", line 1122, in call_with_injection
 bindings = get_bindings(callable)
 File ".venv/lib/python3.13/site-packages/injector/__init__.py", line 1259, in get_bindings
 type_hints = get_type_hints(callable, include_extras=True)
 File "/usr/lib/python3.13/typing.py", line 2496, in get_type_hints
 raise TypeError('{!r} is not a module, class, method, '
 'or function.'.format(obj))
TypeError: functools.partial(<function _after_request at 0x7fb05bfffce0>, allow_credentials=None, allow_headers=None, allow_methods=None, allow_origin='*', expose_headers=None, max_age=None, send_origin_wildcard=None) is not a module, class, method, or function.

I have this monkey-patching workaround (not sure if it handles all scenarios):

_original_get_bindings = injector.get_bindings

def get_bindings_safe(callable):
 if isinstance(callable, functools.partial):
 return {}
 return _original_get_bindings(callable)

injector.get_bindings = get_bindings_safe

Motivation

Prevents from using the library

Expected behavior

Should work normally

Actual behavior

Exception

Steps to reproduce

In the description

Version

0.0.0b1

Environment

Python 3.13.11

Link to code

No response

[danielknell]

Strange, I have it running in production with quart-cors, I'll try and look at it when I am back from travels.

Have you tried swapping the order in which the injector and cors middleware are applied?

[vagran]

It might be introduced with the most recent Python versions.

Just tried swapping order:

quart_injector.wire(app, configure)
app = cors(app, allow_origin="*")
app.run(host=config.server.address, port=config.server.port, debug=True)

and this works. Maybe it is worth mentioning this in documentation if it will not be fixed.

[danielknell]

I'll have a look when I get a chance, it's possibly a problem with both libraries hacking similar internals