问题
I have a Flask app that uses mongoengine and running on Heroku, init I use the bson package and after I updateded it from 0.5.6 to 0.5.7
I started getting the following error message:
[2018-11-23 05:56:43 +0000] [39] [INFO] Worker exiting (pid: 39)
[2018-11-23 05:56:43 +0000] [40] [ERROR] Exception in worker process
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 129, in init_process
self.load_wsgi()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
self.wsgi = self.app.wsgi()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
return self.load_wsgiapp()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
return util.import_app(self.app_uri)
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 350, in import_app
__import__(module)
File "/app/slots_tracker_server/__init__.py", line 5, in <module>
from mongoengine import connect
File "/app/.heroku/python/lib/python3.6/site-packages/mongoengine/__init__.py", line 2, in <module>
from mongoengine import connection
File "/app/.heroku/python/lib/python3.6/site-packages/mongoengine/connection.py", line 1, in <module>
from pymongo import MongoClient, ReadPreference, uri_parser
File "/app/.heroku/python/lib/python3.6/site-packages/pymongo/__init__.py", line 77, in <module>
from pymongo.collection import ReturnDocument
File "/app/.heroku/python/lib/python3.6/site-packages/pymongo/collection.py", line 20, in <module>
from bson.code import Code
File "/app/.heroku/python/lib/python3.6/site-packages/bson/code.py", line 18, in <module>
from bson.py3compat import abc, string_type, PY3, text_type
ImportError: cannot import name 'abc'
This error appears when I restart my server, after that I don't see errors in the log but I can't access the app. I'm running the same configuration in Travis-CI but there I don't see any issues. Any idea on how I can fix it?
This is the output of pip freeze in my server:
blinker==1.4
bson==0.5.7
CacheControl==0.12.5
cachetools==3.0.0
certifi==2018.10.15
chardet==3.0.4
Click==7.0
dateutils==0.6.6
firebase-admin==2.13.0
Flask==1.0.2
Flask-Cors==3.0.7
google-api-core==1.5.2
google-auth==1.6.0
google-cloud-core==0.28.1
google-cloud-firestore==0.30.0
google-cloud-storage==1.13.0
google-resumable-media==0.3.1
googleapis-common-protos==1.5.5
grpcio==1.16.1
gspread==3.0.1
gunicorn==19.9.0
httplib2==0.11.3
idna==2.7
itsdangerous==1.1.0
Jinja2==2.10
MarkupSafe==1.1.0
mongoengine==0.16.1
msgpack==0.5.6
numpy==1.15.4
oauth2client==4.1.3
pandas==0.23.4
protobuf==3.6.1
pyasn1==0.4.4
pyasn1-modules==0.2.2
pyfcm==1.4.5
pymongo==3.7.2
python-dateutil==2.7.5
python-http-client==3.1.0
pytz==2018.7
raven==6.9.0
requests==2.20.1
requests-toolbelt==0.8.0
rsa==4.0
sendgrid==5.6.0
six==1.11.0
urllib3==1.24.1
Werkzeug==0.14.1
Note that pymongo>=2.7.1 is installed as a dependency of mongoengine
Update:
After removing bson and adding pymongo==3.7.2 to the requiements file, I got the following error:
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 129, in init_process
self.load_wsgi()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
self.wsgi = self.app.wsgi()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
return self.load_wsgiapp()
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
return util.import_app(self.app_uri)
File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 350, in import_app
__import__(module)
File "/app/slots_tracker_server/__init__.py", line 5, in <module>
from mongoengine import connect
File "/app/.heroku/python/lib/python3.6/site-packages/mongoengine/__init__.py", line 2, in <module>
from mongoengine import connection
File "/app/.heroku/python/lib/python3.6/site-packages/mongoengine/connection.py", line 1, in <module>
from pymongo import MongoClient, ReadPreference, uri_parser
File "/app/.heroku/python/lib/python3.6/site-packages/pymongo/__init__.py", line 77, in <module>
from pymongo.collection import ReturnDocument
File "/app/.heroku/python/lib/python3.6/site-packages/pymongo/collection.py", line 20, in <module>
from bson.code import Code
File "/app/.heroku/python/lib/python3.6/site-packages/bson/code.py", line 18, in <module>
from bson.py3compat import abc, string_type, PY3, text_type
ModuleNotFoundError: No module named 'bson.py3compat'
回答1:
pymongo>=2.7.1 directive overwrites your bson installation
from https://github.com/mongodb/mongo-python-driver
Do not install the "bson" package from pypi. PyMongo comes with its own bson package; doing "easy_install bson" installs a third-party package that is incompatible with PyMongo.
assuming you really want to use the 3rd party bson, you'll need to
pip uninstall bson(removes the overwritten bson that landed via pymongo package)pip install bson(reinstalls the py-bson package)
or you could patch the pymongo install to remove the collections.abc line (evidently you don't really need it?), but messing with production packaged code is questionable.
pymongo module https://github.com/mongodb/mongo-python-driver/blob/master/bson/py3compat.py#L22-L25
py-bson module you are trying to use. https://github.com/py-bson/bson/blob/master/bson/py3compat.py#L22-L24
来源：https://stackoverflow.com/questions/53441445/flask-app-broken-after-bson-update-in-heroku