How do I reverse-bind python class of an external module to C++ class?

[ttti07]

### my_application.py
# Two packages are installed via `pip install app tokenizer`

from app import *
from tokenizer import *

toks = Tokenizer().tokenize(text)
words = transform_tokens(toks)

TypeError: transform_tokens(): incompatible function arguments. The following argument types are supported:
1. (arg0: List[app.Token]) -> List[app.Word]

Invoked with: [<tokenizer.Token object at 0x2b61a0719770>, <tokenizer.Token object at 0x2b61a071f7b0>, <tokenizer.Token object at 0x2b61a071fe70>]

When I ran my_application.py, I got the error message above.

Originally app and tokenizer are C++ projects, and app has a dependency on tokenizer as you can see.
Both of them are developed in our team, but tokenizer is used in many other projects so we packaged it individually.
tokenizer provides only C and python interfaces (its package does not have C++ headers), so I cannot access its C++ headers that I try to imitate the declaration of class Token and wish to reverse-bind the python class tokenizer.Token to imitated class Token in C++.
transformTokens function should be implemented in C++ to meet the speed requirements.
tokenizer has dependency on torch, but to achieve high performance, the C++ library of tokenizer use custom build of torch, while the python package of tokenizer just uses pytorch.
Therefore, if the python package of app include the C++ library of tokenizer, conflicts occur between pytorch and tokenizer in my_application.py.

Is there any idea on it? Thank you in advance...!