ImportError - Swagger codegen for flask

Description

I am getting the following error when running flask server:
from .binary import Binary
File "/Users/ctippur/cyclops/cyclopscloud/flaskapi/cyclopsflaskglobal/python-flask-server/swagger_server/models/binary.py", line 4, in
from swagger_server.models.binary import Binary

Here is the tree for swagger server that got generated via swagger UI (http://editor.swagger.io)

├── Dockerfile
├── README.md
├── git_push.sh
├── requirements.txt
├── setup.py
├── swagger_server
│   ├── init.py
│   ├── main.py
│   ├── pycache
│   │   ├── init.cpython-36.pyc
│   │   ├── main.cpython-36.pyc
│   │   ├── encoder.cpython-36.pyc
│   │   └── util.cpython-36.pyc
│   ├── controllers
│   │   ├── init.py
│   │   └── default_controller.py
│   ├── encoder.py
│   ├── models
│   │   ├── init.py
│   │   ├── pycache
│   │   │   ├── init.cpython-36.pyc
│   │   │   ├── base_model_.cpython-36.pyc
│   │   │   ├── binary.cpython-36.pyc
│   │   │   └── body.cpython-36.pyc
│   │   ├── base_model_.py
│   │   ├── binary.py

Swagger-codegen version

I generated server code via http://editor.swagger.io

Swagger declaration file content or ur

Command line used for generation

N/A

Steps to reproduce

python3 -m venv flaskglobal
source flaskglobal/bin/activate
cp binary to flaskglobal and unzip contents
cd python-flask-server
pip install -r requirements.txt
python -m swagger_server

Could this be a pythonpath issue?

Start by reproducing the failure with python -m swagger_server after installing requirements.txt. Inspect swagger_server/models/binary.py, swagger_server/models/__init__.py, and the generated package tree to trace the self-referential import of Binary. Done means the generated Flask server starts without this ImportError, with a focused regression test or reproducible validation.