ModuleNotFoundError: No module named 'flask.scaffold'

Question

ModuleNotFoundError: No module named 'flask.scaffold'

tumluliu opened this issue a year ago · comments

Code

as from the official doc

from flask import Flask
from flask_restx import Resource, Api

app = Flask(__name__)
api = Api(app)

@api.route('/hello')
class HelloWorld(Resource):
    def get(self):
        return {'hello': 'world'}

if __name__ == '__main__':
    app.run(debug=True)

Repro Steps (if applicable)

init a new python project with poetry with poetry new flask-restx-test
enter the dir and poetry add flask-restx
copy and paste the minimal API sample code into app.py
enter the venv with poetry shell
launch the app.py with python app.py

Expected Behavior

the app should be up and running

Actual Behavior

error

Error Messages/Stack Trace

error with:

Traceback (most recent call last):
  File "$HOME/.cache/pypoetry/virtualenvs/flask-restx-test-gvqPH5Xl-py3.10/lib/python3.10/site-packages/flask_restx/api.py", line 18, in <module>
    from flask.helpers import _endpoint_from_view_func
ImportError: cannot import name '_endpoint_from_view_func' from 'flask.helpers' ($HOME/.cache/pypoetry/virtualenvs/flask-restx-test-gvqPH5Xl-py3.10/lib/python3.10/site-packages/flask/helpers.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "$HOME/projects/flask-restx-test/app.py", line 2, in <module>
    from flask_restx import Resource, Api
  File "$HOME/.cache/pypoetry/virtualenvs/flask-restx-test-gvqPH5Xl-py3.10/lib/python3.10/site-packages/flask_restx/__init__.py", line 2, in <module>
    from .api import Api  # noqa
  File "$HOME/.cache/pypoetry/virtualenvs/flask-restx-test-gvqPH5Xl-py3.10/lib/python3.10/site-packages/flask_restx/api.py", line 20, in <module>
    from flask.scaffold import _endpoint_from_view_func
ModuleNotFoundError: No module named 'flask.scaffold'

Environment

Python version: 3.10.11
Flask version: 3.0.0
Flask-RESTX version: 1.1.0
Other installed Flask extensions: none

Additional Context

nothing else as this is the minimal sample. Could it be caused by some incompatibility?

Arun Kr. Khattri commented a year ago

same here

vkdnjznd · Answer 1 · Sun Oct 01 2023 22:24:18 GMT+0800 (China Standard Time)

from flask 3.0.0, the scaffold module was moved to sansio.scaffold
This bug can be fixed by replacing flask.scaffold with flask.sansio.scaffold on the line between 17 and 20 in the flask_restx/api.py

try:
    from flask.helpers import _endpoint_from_view_func
except ImportError:
    from flask.sansio.scaffold import _endpoint_from_view_func

Amritananda Sadhukhan · Answer 2 · Sun Oct 01 2023 23:47:14 GMT+0800 (China Standard Time)

Hi @tumluliu ,
in Scripts\Lib\site-packages\flask_restx\api.py
In line number 20 , I made following changes,
from flask.sansio.scaffold import _endpoint_from_view_func

Lu Liu · Answer 3 · Mon Oct 02 2023 00:34:43 GMT+0800 (China Standard Time)

from flask 3.0.0, the scaffold module was moved to sansio.scaffold This bug can be fixed by replacing flask.scaffold with flask.sansio.scaffold on the line between 17 and 20 in the flask_restx/api.py
try:
    from flask.helpers import _endpoint_from_view_func
except ImportError:
    from flask.sansio.scaffold import _endpoint_from_view_func

Thanks @vkdnjznd ! Worked like a charm. So I assume this would be included in 1.1.1 as a bugfix?

Peter Doggart · Answer 4 · Mon Oct 02 2023 10:10:05 GMT+0800 (China Standard Time)

Yes, it will be fixed in the next release. I’m also trying to solve the json schema issues stated elsewhere. However, I’m not near a development computer this week, so it’s going to be a few days before I can get around to it unfortunately.

…

On Sun, Oct 1, 2023 at 12:34, Lu Liu ***@***.***(mailto:On Sun, Oct 1, 2023 at 12:34, Lu Liu <<a href=)> wrote: > from flask 3.0.0, the scaffold module was moved to sansio.scaffold This bug can be fixed by replacing flask.scaffold with flask.sansio.scaffold on the line between 17 and 20 in the flask_restx/api.py > > try: > from flask.helpers import _endpoint_from_view_func > except ImportError: > from flask.sansio.scaffold import _endpoint_from_view_func Thanks ***@***.***(https://github.com/vkdnjznd) ! Worked like a charm. So I assume this would be included in 1.1.1 as a bugfix? — Reply to this email directly, [view it on GitHub](#567 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/ACT3Q3BFW4GD3SHZA4I6LLLX5GLTHANCNFSM6AAAAAA5OGMVHM). You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

Alfi Maulana · Answer 5 · Tue Oct 03 2023 13:32:14 GMT+0800 (China Standard Time)

I just tested this project and found out that we may be blocked by pytest-dev/pytest-flask#167 before we could support Flask 3.0.0 in this project.

Tom Trval · Answer 6 · Tue Oct 03 2023 16:21:22 GMT+0800 (China Standard Time)

Confirmed. I am working on patch for missing import.

David · Answer 7 · Thu Oct 05 2023 23:58:38 GMT+0800 (China Standard Time)

also getting this error

Python version: 3.9
Flask version: 1.1.2
Flask-RESTX version: 1.1.0

Tom Trval · Answer 8 · Fri Oct 06 2023 22:07:03 GMT+0800 (China Standard Time)

Note: If you really need hot-fix consider temporal use of restx-monkey. I put stuff there same as suggesting pull requests here in flask-restx. Hot patcher restx-monkey is in standard pipy repo.

devopsnetworks · Answer 9 · Mon Oct 16 2023 21:12:10 GMT+0800 (China Standard Time)

Pyhton = 3.10.12
flask == 3.0.0
flask_restx == 0.5

Facing the similar issue.
File "/home/USERNAME/devnet/.venv/lib/python3.10/site-packages/flask_restx/api.py", line 23, in
from flask.scaffold import _endpoint_from_view_func
ModuleNotFoundError: No module named 'flask.scaffold'

devopsnetworks · Answer 10 · Mon Oct 16 2023 21:19:58 GMT+0800 (China Standard Time)

It's working after modifying the line No 23 on file:
/home/USER/venv/lib/python3.10/site-packages/flask_restx/api.py

Before
from flask.scaffold import _endpoint_from_view_func

Now
from flask.sansio.scaffold import _endpoint_from_view_func