Находки в опенсорсе: Python

🚀 New issue to ag2ai/faststream by @zueve
📝 Bug: (#2868)


Describe the bug
Can't forward client_rack to aiokafka consumer through FastStream Kafka API.

How to reproduce
Include source code:

from faststream import FastStream

from faststream.kafka import KafkaBroker

# Attempt to configure at broker level

broker = KafkaBroker(
    "localhost:9092",
    client_rack="us-east-1a",  # not supported
)
app = FastStream(broker)

And/Or steps to reproduce the behaviour:

1. Create a KafkaBroker.
2. Try to pass client_rack to the broker constructor.
3. Observe that the parameter is not accepted.
4. There is no alternative way to configure it via subscriber(...) either.

Expected behavior
KafkaBroker should allow passing client_rack (or generic consumer kwargs) and forward it to the underlying aiokafka.AIOKafkaConsumer.

Observed behavior
client_rack is not supported in KafkaBroker constructor, nor in subscriber configuration, so it cannot be passed to aiokafka.

Screenshots
N/A.

Environment
Running FastStream 0.6.7 with CPython 3.14.5 on Linux

Additional context
aiokafka.AIOKafkaConsumer supports client_rack since 0.14.0 version


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Convert our `Empty` class usage to `typing_extensions.Sentinel` (#995)


Current way:

django-modern-rest/dmr/types.py

Lines 48 to 55 in 5ca7975

New (modern) way: https://typing-extensions.readthedocs.io/en/latest/#typing_extensions.Sentinel

1. We need to change how EmptyObj is defined to be EMPTY: Final = Sentinel('EMPTY')
2. We need to change all isinstance(..., Empty) to check for the sentinel

This is a very easy task for new contributors :)


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Поддержать конвертацию t-строк(!) и обычных строк в текстовые виджеты aiogram-dialog

https://github.com/Tishka17/aiogram_dialog/issues/529

🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Test `Valkey` support (#980)


Currently we only test redis as the database for SyncRedis and AsyncRedis throttling backends. We also need to test Valkey, because we claim to support it.


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🚀 New issue to ag2ai/faststream by @BrikozO
📝 Bug: (#2842)



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🚀 New issue to wemake-services/django-modern-rest by @Peopl3s
📝 TagSchema and RoleSchema do not enforce max_length, causing unhandled DB errors (#944)


What's wrong?

The Tag and Role Django models define name = CharField(max_length=100), but the corresponding Pydantic schemas accept any-length strings.

class TagSchema(pydantic.BaseModel):
      name: str  <!-----------------------------HERE                                                                                                                                                                 
                                                        
  class RoleSchema(pydantic.BaseModel):                                                                                                                                                                     
      name: str  <!-----------------------------HERE

When a client sends a name longer than 100 characters, Pydantic validation passes (HTTP 422 is never raised), and the value reaches the database layer where PostgreSQL raises DataError: value too long for type character varying(100). This results in an unhandled 500 instead of a proper 422 validation error. On SQLite the value is silently stored without truncation, masking the bug in tests.

How it should be?

Add max_length constraints to match the model definition:

                                                                                                                                                                                                            class TagSchema(pydantic.BaseModel):                  
    name: str = Field(max_length=100)
                                                                                                                                                                                                            class RoleSchema(pydantic.BaseModel):
    name: str = Field(max_length=100)

Used versions

0.7.0

OS information

MacOS


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Add `RefreshTokenSyncController` and `RefreshTokenAsyncController` (#907)


Add RefreshTokenSyncController and RefreshTokenAsyncController

Basically, they should accept refresh_token and return new pairs of access_token and refresh_token. But they should be reusable as well as the existing controllers.

It should be similar to the existing views:

django-modern-rest/dmr/security/jwt/views.py

Lines 99 to 132 in dba07e8

Example from a real project: https://github.com/Griger10/g-pulse/blob/3d520b8444736eaaeffad1cf2221019f3ffad6c4/services/api/apps/accounts/api/views.py#L93


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Optimize `dmr_rf` and `dmr_client` test features for faster tests (#889)


We provide our own fixtures that are subclasses of Django's builtin one.

Django has this code inside: https://github.com/django/django/blob/7dc826b9758d634623a6f5ca05d0ca2048a0ce48/django/test/client.py#L450-L458

    def _encode_json(self, data, content_type):
        """
        Return encoded JSON if data is a dict, list, or tuple and content_type
        is application/json.
        """
        should_encode = JSON_CONTENT_TYPE_RE.match(content_type) and isinstance(
            data, (dict, list, tuple)
        )
        return json.dumps(data, cls=self.json_encoder) if should_encode else data

We need to optimize this method, because json.dumps is slow, but msgspec is fast.
It won't be noticable on 1 tests, but will be on 2k tests (which is the case for our own test base).

See how we conditionally dump our schema here: https://github.com/wemake-services/django-modern-rest/blob/master/dmr/openapi/dump.py

Maybe we should reuse the same for tests?


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🚀 New issue to ag2ai/faststream by @ce1ebrimbor
📝 Feature: Support broker-level ack_policy default with per-subscriber override (#2826)


Problem

Currently ack_policy can only be set per-subscriber:

@broker.subscriber("orders.topic", ack_policy=AckPolicy.NACK_ON_ERROR)
async def handle_order(msg: OrderMessage) -> None:
    ...

There is no way to set a default ack_policy at the broker (or router) level. In practice, most services want the same policy across all subscribers — typically NACK_ON_ERROR for at-least-once delivery with DLQ. This forces every @broker.subscriber() call to repeat the same ack_policy= argument, which is error-prone: forgetting it on a single subscriber silently falls back to ACK_FIRST (at-most-once), which can cause silent message loss.

Proposed solution

Add an ack_policy parameter to KafkaBroker (and equivalently to RabbitBroker, NatsBroker, etc.) that sets the default for all subscribers registered on that broker. Individual subscribers can still override it.

broker = KafkaBroker("localhost:9092", ack_policy=AckPolicy.NACK_ON_ERROR)

# Inherits NACK_ON_ERROR from broker
@broker.subscriber("orders.topic")
async def handle_order(msg: OrderMessage) -> None:
    ...

# Overrides to ACK for this specific subscriber
@broker.subscriber("notifications.topic", ack_policy=AckPolicy.ACK)
async def handle_notification(msg: NotificationMessage) -> None:
    ...

The resolution order would be: subscriber-level > broker-level > built-in default (ACK_FIRST).

Why this matters
• Safety: ACK_FIRST as a silent default is dangerous for services that use DLQ or need at-least-once delivery. A broker-level default lets teams enforce their delivery guarantee in one place.
• DRY: Services with 10+ subscribers shouldn't need to repeat ack_policy=AckPolicy.NACK_ON_ERROR on every one.
• Consistency with other broker-level settings: decoder, middlewares, security, and logger are all broker-level defaults that subscribers inherit. ack_policy is the notable exception.

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🚀 New issue to wemake-services/django-modern-rest by @LesPrimus
📝 UnsolvableAnnotationsError when subclassing a concrete Controller subclass` (#873)


What's wrong?

Bug: UnsolvableAnnotationsError when subclassing a concrete Controller subclass

Description

When creating an intermediate concrete controller class and then subclassing it,
__init_subclass__ raises UnsolvableAnnotationsError even though the serializer
is already resolved on the parent.

Reproduction

from dmr import Controller
from dmr.plugins.pydantic import PydanticSerializer
from dmr.serializer import BaseSerializer
                                                                                                                                                                            
 
class BaseController[T: BaseSerializer](Controller[T]):                                                                                                                     
    pass        


class PydanticController(BaseController[PydanticSerializer]):
    pass


# This raises UnsolvableAnnotationsError
class UserController(PydanticController):
    def get(self) -> ...:
        ...                                                                                                                                                                 
 
Error                                                                                                                                                                       
                
dmr.exceptions.UnsolvableAnnotationsError: Type args () are not correct for <class 'UserController'>,
at least 1 type arg must be provided

Expected behavior

UserController should inherit the serializer from its concrete parent PydanticController,                                                                                   
which already has serializer = PydanticSerializer set.


--

Thanks for the awesome library, I just started exploring it and I'm really enjoying it so far!

--

### How it should be?

Subclassing a concrete `Controller` subclass (one that already has a resolved serializer)                                                                                   
should work without requiring the type argument to be re-specified.                                                                                                         
                                                                                                                                                                            
`UserController(PydanticController)` should behave the same as `UserController(BaseController[PydanticSerializer])`.

### Used versions

- `django-modern-rest==0.5.0`                                                                                                                                               
-  `Python 3.14.0` 

### OS information

- `Linux tuxedo-stellaris 6.17.0-111019-tuxedo x86_64 (Ubuntu 24.04)`

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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Add a Django command to export OpenAPI schemas (#858)


It migth be useful to people who want to share the schema. Or automate something with it.

I propose to add a django command: dmr_export_schema.
Args:

• Where to find schema, I think we should reuse import_string logic from Django. Required
• All json formatting ones: sort_keys and indent
• Format: json or yaml, check that yaml is installed. Default is json

We should print it to the stdout always. Usages:

# regular:
python manage.py dmr_export_schema server.urls:schema

# pretty:
python manage.py dmr_export_schema server.urls:schema --format json --indent=2 --sort-keys

This would need tests, we can test it as a subprocess, it is a django command after all.
And docs.


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Support `orjson` as a possible backend for `JsonParser` / `JsonRenderer` (#857)


Currently we always use json as a module in JsonParser and JsonRenderer:

django-modern-rest/dmr/parsers.py

Lines 132 to 134 in 69822ff

But, we can make this module customizable. We can pass orjson module there, since it also has a similar API.

Something like:

class JsonParser(Parser):
    __slots__ = ('_json_module', ...)
    def __init__(self, json_module: _JsonModule = json, ...) -> None:
       self._json_module = json_module

And later self._json_module.loads(...)

This would need multiple test cases: install orjson as unit-test dependency and add unit tests for this new renderer / parser.
And we can document that with an example in the integrations.rst docs.


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Add docs and example about `django-health-check` integration (#831)


One can use https://github.com/codingjoe/django-health-check for health checks.
No special integration from our side is required.

This information can be added here: https://github.com/wemake-services/django-modern-rest/blob/master/docs/pages/integrations.rst


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🚀 New issue to ag2ai/faststream by @dumpler
📝 Bug: Logger not properly passed to Confluent Kafka Producer and AdminClient (#2691)


Describe the bug

There are two related issues with logger configuration in the Confluent Kafka components:

1.

 Late Logger Setup in AsyncConfluentProducer

 In faststream/confluent/helpers/client.py at line 46, the Producer object is created before the _setup() method is called for loger_state. This results in the Producer receiving a NoSetLoggerObject instead of the intended logger passed during initialization.

2.

 Missing Logger in AdminClient
 The AdminClient in AdminService does not accept a logger parameter, even though it should. Currently, only the configuration is passed, leaving the AdminClient without proper logging.

How to reproduce
Include source code:

import logging

import uvicorn
from fastapi import FastAPI
from faststream.confluent.fastapi import KafkaRouter

logger = logging.getLogger("faststream")

router = KafkaRouter(
    bootstrap_servers="kafka:9092",
    enable_idempotence=True,
    allow_auto_create_topics=False,
    schema_url="/asyncapi",
    include_in_schema=True,
    logger=logger,
)

app = FastAPI()
app.include_router(router)

uvicorn.run(app, host="0.0.0.0", port=8000)

Expected behavior

1. The Producer in AsyncConfluentProducer should use the logger passed to KafkaRouter.
2. The AdminClient should inherit the same logger as other components.

Observed behavior

1. The Producer uses NoSetLoggerObject instead of the provided logger.
2. The AdminClient lacks logger configuration, leading to potential silent failures or inadequate logging.

Environment
Running FastStream 0.6.3 with CPython 3.13.1 on Linux


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🚀 New issue to ag2ai/faststream by @hmvp
📝 Bug: topic patterns are not correctly documented (#2804)


Describe the bug
When using a pattern for a kafka topic the generated asyncapi spec (and docs) does not include that handler

How to reproduce
With something along the lines of:

broker = KafkaBroker(...)

router = KafkaRouter()

@router.subscriber(pattern="some.wildcard.topic.*")
def handle_event(event: Event): ...

broker.include_router(router)

app = AsgiFastStream(
        broker,
        asyncapi_path="/docs",
    )

Expected behavior
The subscriber is included in the asyncapi spec and docs. As far as I can see the asyncapi spec actually allows for this even when using Path variables.

Observed behavior
The asyncapi docs don't contain that subscriber.

Screenshots

Environment
Running FastStream 0.6.7 with CPython 3.14.0 on Linux

Additional context


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Test and declare officail `NamedTuple` support (#774)


Here's the code:

>>> from typing import NamedTuple
>>> class A(NamedTuple):
...     x: int
...     y: int
...     
>>> import pydantic
>>> pydantic.TypeAdapter(A).validate_python({'x': 1, 'y': 2})
A(x=1, y=2)
>>> pydantic.TypeAdapter(A).validate_python({'x': 1, 'y': 'a'})
Traceback (most recent call last):
  File "<python-input-11>", line 1, in <module>
    pydantic.TypeAdapter(A).validate_python({'x': 1, 'y': 'a'})
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/sobolev/Desktop/django-modern-rest/.venv/lib/python3.13/site-packages/pydantic/type_adapter.py", line 441, in validate_python
    return self.validator.validate_python(
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        object,
        ^^^^^^^
    ...<6 lines>...
        by_name=by_name,
        ^^^^^^^^^^^^^^^^
    )
    ^
pydantic_core._pydantic_core.ValidationError: 1 validation error for call[A]
y
  Input should be a valid integer, unable to parse string as an integer [type=int_parsing, input_value='a', input_type=str]
    For further information visit https://errors.pydantic.dev/2.12/v/int_parsing

As we can see, NamedTuple models work well with pydantic. So, here's what we need to do:

1. Add a test case to test_plugins/test_pydantic that it works with NamedTuple
2. Add a doc example here https://django-modern-rest.readthedocs.io/en/latest/pages/getting-started.html#showcase
3. Add a changelog entry, that it is now officially supported

We welcome new contributors :)


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Provide `dmr.cookies.set_cookies` helper function (#773)


Currently we have two places where we duplicate this code:

django-modern-rest/dmr/streaming/controller.py

Lines 172 to 178 in a6bc356

and

django-modern-rest/dmr/response.py

Lines 256 to 259 in a6bc356

So, it can probably be useful to others as well.
Let's move this to cookies.py as a public helper function.

Also, document it in public-api.rst

This is a very easy task for new contributors.


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Provide our own `settings` fixture (#760)


When using settings fixture from pytest-django we frequently change them.
However, we have dmr_clean_settings fixture, which should be use when we touch our own settings.

So, let's add a new fixture to dmr_pytest.py which will return unchanged settings: LazySettings, but will also use dmr_clean_settings.

Also, remove all dmr_clean_settings from our own tests, where settings is used.


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Use the latest django version by default (#759)


Currently we use 5.2 by default:

django-modern-rest/pyproject.toml

Line 77 in bea5f2d

But, we need to use the latest one. Which is 6.0.
Also, we would need to change this CI job to use 5.2 instead:

django-modern-rest/.github/workflows/test.yml

Lines 71 to 78 in bea5f2d


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🚀 New issue to wemake-services/django-modern-rest by @sobolevn
📝 Support `Path` with `*args` (#754)


Right now Path component only supports parsing from request.kwargs. Which is like 99% of cases.
However, parsing from request.args is not supported:

django-modern-rest/dmr/components.py

Lines 655 to 662 in b3f9c08

What should we do instead?

1. When request.args is provided we should require models like:

>>> import pydantic
>>> class UserId(pydantic.BaseModel):
...     user_id: int

>>> PathModel = pydantic.RootModel[tuple[tuple[int, ...], UserId]]

>>> PathModel.model_validate((('1', '2', '3'), {'user_id': 10}))
RootModel[tuple[tuple[int, ...], UserId]](root=((1, 2, 3), UserId(user_id=10)))

1. We would return tuple[Args, Kwargs] from this component if request.args is set
2. Test this with unnamed re_path urls https://docs.djangoproject.com/en/6.0/topics/http/urls/#using-unnamed-regular-expression-groups
3. Test this in tests/test_unit/test_components/test_path.py
4. Document this feature in docs/pages/components/path.rst
5. Provide an example in docs/examples/components/path_args.py and include it to path.rst
6. Provide a changelog entry
7. Remove _UNNAMED_PATH_PARAMS_MSG and all translations of this string, recompile all translations with make translations

Contributions are welcome! This is an intermediate level task :)


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