ImportError: cannot import name 'get_default_backend'

[mikkokotila]

In a fresh env I get the below:

Mikkos-Air:Studio-Stream mikko$ python app.py
Traceback (most recent call last):
  File "app.py", line 3, in <module>
    from flask_graphql import GraphQLView
  File "/Users/mikko/miniconda3/lib/python3.6/site-packages/Flask_GraphQL-2.0.0-py3.6.egg/flask_graphql/__init__.py", line 1, in <module>
    from .blueprint import GraphQL
  File "/Users/mikko/miniconda3/lib/python3.6/site-packages/Flask_GraphQL-2.0.0-py3.6.egg/flask_graphql/blueprint.py", line 5, in <module>
    from .graphqlview import GraphQLView
  File "/Users/mikko/miniconda3/lib/python3.6/site-packages/Flask_GraphQL-2.0.0-py3.6.egg/flask_graphql/graphqlview.py", line 7, in <module>
    from graphql_server import (HttpQueryError, default_format_error,
  File "/Users/mikko/miniconda3/lib/python3.6/site-packages/graphql_server_core-1.1.1-py3.6.egg/graphql_server/__init__.py", line 5, in <module>
    from graphql import get_default_backend
ImportError: cannot import name 'get_default_backend'

[mikkokotila]

Workaround is to:

pip install graphql-core==2.2.1
pip install graphene==2.1.8

[jkimbo]

@mikkokotila the new version of graphql-core v3 removes the backend feature that was present in v2. It looks like Flask GraphQL needs to update it's dependencies so that it's not including a version of graphql-core it doesn't support.

[jkimbo]

Ah looks like I've already created a PR for this which I have forgotten about! graphql-python/flask-graphql#60 I'll try and bring it up to date.

[babaMar]

Experiencing the same problem, any other suggested solution other than waiting the PR to be merged?

[babaMar]

@jkimbo I see Travis builds were failing, so I created graphql-python/flask-graphql#65

[ivancarrancho]

Please mix it guys graphql-python/flask-graphql#65
Thanks @babaMar

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jkimbo]

Looks like this issue has been fixed in flask-graphql

[milliegibbons]

I am get this error stated here when using these packages:
openai and graphene_federation I need features in those versions.
Every combination seems to give dependency conflict.

openai==1.3.5
aiohttp==3.8.6
aiosignal==1.3.1
aniso8601==9.0.1
async-timeout==4.0.3
attrs==23.1.0
blinker==1.7.0
certifi==2023.7.22
charset-normalizer==3.3.2
click==8.1.7
elastic-transport==8.10.0
elasticsearch==8.11.0
filelock==3.13.1
Flask==2.3.3
Flask-GraphQL==2.0.0
Flask-GraphQL-Auth==1.3.2
Flask-JWT-Extended==4.5.3
frozenlist==1.4.0
fsspec==2023.10.0
graphene==3.3
graphene-federation==3.1.4
graphql-core==3.2.3
graphql-relay==3.2.0
graphql-server==3.0.0b7
graphql-server-core==1.1.1
huggingface-hub==0.17.3
idna==3.4
importlib-metadata==6.8.0
itsdangerous==2.1.2
Jinja2==3.1.2
joblib==1.3.2
MarkupSafe==2.1.3
mpmath==1.3.0
multidict==6.0.4
networkx==3.2.1
nltk==3.8.1
numpy==1.26.2
packaging==23.2
Pillow==10.1.0
promise==2.3
PyJWT==2.0.0
python-dotenv==1.0.0
PyYAML==6.0.1
regex==2023.10.3
requests==2.31.0
safetensors==0.4.0
scikit-learn==1.3.2
scipy==1.11.3
sentence-transformers==2.2.2
sentencepiece==0.1.99
six==1.16.0
sympy==1.12
threadpoolctl==3.2.0
tokenizers==0.14.1
torch==2.1.0
torchvision==0.16.0
tqdm==4.66.1
transformers==4.35.0
typing_extensions==4.8.0
urllib3==2.1.0
Werkzeug==3.0.1
yarl==1.9.2
zipp==3.17.0