AttributeError: module 'django.db.models' has no attribute 'SubfieldBase'
I'm trying to run application originally created using python 3.6 and django 1.11 with python 3.7 and django 2.2.
I'm now getting problems when starting django server:
python manage.py runserver
Exception in thread Thread-1:
Traceback (most recent call last):
File "/opt/python/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/opt/python/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/utils/autoreload.py", line 77, in raise_last_exception
raise _exception[0](_exception[1]).with_traceback(_exception[2])
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/srv/work/miettinj/tandt_putki/python/django/tandt/tandt/models.py", line 20, in <module>
from select_multiple_field.models import SelectMultipleField
File "/srv/work/miettinj/tandt_putki/python/django/tandt/python-3.7-django-*/lib/python3.7/site-packages/select_multiple_field/models.py", line 20, in <module>
class SelectMultipleField(six.with_metaclass(models.SubfieldBase,
AttributeError: module 'django.db.models' has no attribute 'SubfieldBase'
my virtualenv:
(python-3.7-django-*) miettinj@ramen:~/tandt_putki/python/django/tandt> pip freeze
adal==1.2.7
aniso8601==7.0.0
anyascii==0.3.1
asgiref==3.6.0
azure-core==1.26.2
backports.zoneinfo==0.2.1
bcrypt==4.0.1
beautifulsoup4==4.11.1
bleach==6.0.0
certifi==2022.12.7
cffi==1.15.1
chardet==5.1.0
charset-normalizer==3.0.1
cryptography==39.0.0
Django==2.2
django-auth-ldap==4.1.0
django-ckeditor==6.3.2
django-contrib-comments==2.2.0
django-cors-headers==3.11.0
django-debug-toolbar==3.2.4
django-filter==21.1
django-jinja==2.10.2
django-js-asset==2.0.0
django-modelcluster==6.0
django-multiselectfield==0.1.12
django-select-multiple-field==0.4.2
django-storages==1.12.3
django-taggit==2.1.0
django-tinymce==3.5.0
django-treebeard==4.5.1
django-utils-six==2.0
djangorestframework==3.13.1
draftjs-exporter==5.0.0
enum34==1.1.10
et-xmlfile==1.1.0
filebrowser-safe==1.1.1
future==0.18.3
futures==3.0.5
graphene==2.1.8
graphene-django==2.0.0
graphql-core==2.3.2
graphql-relay==2.0.1
grappelli-safe==1.1.1
highlightext==0.3.3
html5lib==1.1
httplib2==0.21.0
idna==3.4
ipaddress==1.0.23
iso8601==1.1.0
isodate==0.6.1
Jinja2==3.1.2
l18n==2021.3
libvoikko==4.1.1.8
lxml==4.9.2
MarkupSafe==2.1.2
Mezzanine==6.0.0
msrest==0.7.1
msrestazure==0.6.4
oauthlib==3.2.2
object-listing==0.2.2
openpyxl==3.0.10
packaging==23.0
paramiko==3.0.0
Pillow==9.4.0
promise==2.3
psycopg2==2.9.5
pyasn1==0.4.8
pyasn1-modules==0.2.8
pycparser==2.21
PyJWT==2.6.0
PyNaCl==1.5.0
pyparsing==3.0.9
pysolr==3.9.0
python-dateutil==2.8.2
python-json-logger==2.0.4
python-ldap==3.4.3
pytz==2022.7.1
pytz-deprecation-shim==0.1.0.post0
requests==2.28.2
requests-oauthlib==1.3.1
Rx==1.6.3
singledispatch==4.0.0
six==1.16.0
soupsieve==2.3.2.post1
sqlparse==0.4.3
statfi==0.6
statfi-paginator==0.4
statfi-search==1.14
statfi.django.ad==0.12
statfi.django.base==0.6.1
statfi.logging==0.2.1
tablib==3.3.0
telepath==0.3
text-unidecode==1.3
tinycss2==1.1.1
typing_extensions==4.4.0
tzdata==2022.7
tzlocal==4.2
urllib3==1.26.14
voikko==0.5
webencodings==0.5.1
whitenoise==6.3.0
Willow==1.4.1
xlrd==2.0.1
XlsxWriter==3.0.7
xlwt==1.3.0
I guess I should change the following in my models.py
from select_multiple_field.models import SelectMultipleField
or change something in my virtual env, jos don't discover what