Basic example not working

[daaa57150]

Hi,

I'm really struggling with pinject, even the basic example isn't working for me.
I'm on Windows 10 with python 3.7.3, pinject 0.12.6

My first try resulted in an exception:
ModuleNotFoundError: No module named '_gdbm'

So I applied a workaround I found in issue #22

Now this simple code:

class OuterClass(object):
    def __init__(self, inner_class):
        self.inner_class = inner_class

class InnerClass(object):
    def __init__(self):
        self.forty_two = 42

# somewhere else in my code:
obj_graph = pinject.new_object_graph(
    modules=[core, api]  # workaround
)
outer_class = obj_graph.provide(OuterClass)

Raises this exception:
{NothingInjectableForArgError} when injecting OuterClass.__init__ at C:\Users\me\PycharmProjects\MyProject\api\views.py:32, nothing injectable for the binding name "inner_class" (unannotated)

I even tried to add this line before requesting the outer_class:

inner_class = obj_graph.provide(InnerClass)

It knows how to create it! pinject should now inject that instance to create the outer_class, but it doesn't.

Any idea?