cython with inject problem

[ehanhalici]

Hi, first of all I would like to thank you for your work.

As for my question, I use inject in my python flask project. There is no problem when working with python, but when I compile with cython, I get the error “init() takes exactly 2 positional arguments (1 given)”. the reason for this error is that inject cannot do its job

inject.py is

import importlib
import inspect
import pkgutil
from flask_injector import FlaskInjector
from injector import Binder, singleton

from src.resources.base_resource import BaseResource


def injects_config(app):
    def configure(binder: Binder):
        package = importlib.import_module("src.resources")
        
        for _, module_name, _ in pkgutil.walk_packages(package.__path__, package.__name__ + "."):
            module = importlib.import_module(module_name)
            for name, obj in inspect.getmembers(module):
                if inspect.isclass(obj) and issubclass(obj, BaseResource) and obj is not BaseResource:
                    print(f"Binding {obj} in module {module_name}")
                    binder.bind(obj, to=obj, scope=singleton)

    FlaskInjector(app=app, modules=[configure])

and using like this:

from injector import inject
class XResource(BaseResource):

    def __init__(self, x_service: XService):
        super().__init__()
        self.x_service = x_service

the code works fine in python but when I compile with cython I get the error “init() takes exactly 2 positional arguments (1 given)””

I don't get this error if I remove inject and derive objects manually, like this:

class XResource(BaseResource):

    def __init__(self):
        super().__init__()
        self.x_service = XService()

the library versions I use are as follows

Flask==2.2.5
Flask-Injector==0.14.0
injector==0.20.1

I am waiting for the help of those who have experience with the problem. Thank you very much.

[ivankorobkov]

Hi!

Take a look, there is no call to inject here.

from injector import inject

class XResource(BaseResource):
    def __init__(self, x_service: XService):
        super().__init__()
        self.x_service = x_service

Maybe, you meant:

class XResource(BaseResource):
    @inject.autoparams()
    def __init__(self, x_service: XService):
        pass