pinject.errors.OnlyInstantiableViaProviderFunctionError：Simple Sample Script but not know how to fix the error

[o1dcat]

[root@localhost ~]# python3
Python 3.6.8 (default, Apr 16 2020, 01:36:27)
[GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux
Type "help", "copyright", "credits" or "license" for more information.

import pinject
from enum import Enum

class SendKind(Enum):
... text = 't'
... link = 'l'
...
class test(object):
... @pinject.copy_args_to_internal_fields
... def init(self,send_kind):
... pass
... def demo(self):
... print(self._send_kind.text)
...
obj_graph = pinject.new_object_graph()
test_class = obj_graph.provide(test)
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/pinject/scoping.py", line 62, in provide
return self._binding_key_to_instance[binding_key]
KeyError: <the binding name "send_kind" (unannotated)>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 51, in provide_from_arg_binding_key
provided = provider_indirection.StripIndirectionIfNeeded(Provide)
File "/usr/local/lib/python3.6/site-packages/pinject/provider_indirections.py", line 26, in StripIndirectionIfNeeded
return provide_fn()
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 43, in Provide
lambda: binding.proviser_fn(child_injection_context, self,
File "/usr/local/lib/python3.6/site-packages/pinject/scoping.py", line 64, in provide
instance = default_provider_fn()
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 44, in
pargs, kwargs))
File "/usr/local/lib/python3.6/site-packages/pinject/bindings.py", line 264, in Proviser
to_class, injection_context, pargs, kwargs)
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 70, in provide_class
return cls(*init_pargs, **init_kwargs)
TypeError: call() missing 1 required positional argument: 'value'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.6/site-packages/pinject/object_graph.py", line 203, in provide
raise e
File "/usr/local/lib/python3.6/site-packages/pinject/object_graph.py", line 200, in provide
direct_init_pargs=[], direct_init_kwargs={})
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 66, in provide_class
direct_init_pargs, direct_init_kwargs)
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 83, in get_injection_pargs_kwargs
lambda abk: self.provide_from_arg_binding_key(
File "/usr/local/lib/python3.6/site-packages/pinject/arg_binding_keys.py", line 108, in create_kwargs
for arg_binding_key in arg_binding_keys}
File "/usr/local/lib/python3.6/site-packages/pinject/arg_binding_keys.py", line 108, in
for arg_binding_key in arg_binding_keys}
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 84, in
fn, abk, injection_context))
File "/usr/local/lib/python3.6/site-packages/pinject/object_providers.py", line 58, in provide_from_arg_binding_key
binding.get_binding_target_desc_fn())
pinject.errors.OnlyInstantiableViaProviderFunctionError: when injecting test.init, the arg named "send_kind" unannotated cannot be injected, because its provider, the class main.SendKind, needs at least one directly passed arg