解决ModuleNotFoundError: No module named ‘celery.five‘的问题

环境：

celery5.0.0rc3

vine 1.3.0

问题描述：

执行命令 E:\HttpRunnerManager>python manage.py celery -A HttpRunnerManager worker --loglevel=info

报错如下：

File "C:\Python3.7.8\lib\site-packages\djcelery\models.py", line 17, in <module>
from .picklefield import PickledObjectField
File "C:\Python3.7.8\lib\site-packages\djcelery\picklefield.py", line 22, in <module>
from celery.five import with_metaclass
ModuleNotFoundError: No module named 'celery.five'

解决方法：

celery降级到4.4.7

使用命令卸载：

pip uninstall celery

重新安装：

pip install celery==4.4.7

其他环境相关版本参考：

C:\Users\Administrator>pip list
Package                Version
---------------------- ---------
amqp                   2.6.1
anyjson                0.3.3
appdirs                1.4.4
atomicwrites           1.4.0
attrs                  20.1.0
Babel                  2.8.0
bcrypt                 3.2.0
billiard               3.6.3.0
black                  19.10b0
celery                 4.4.7
certifi                2020.6.20
cffi                   1.14.2
chardet                3.0.4
click                  7.1.2
click-didyoumean       0.0.3
click-repl             0.1.6
colorama               0.4.3
colorlog               4.2.1
ConfigArgParse         1.2.3
coreapi                2.3.3
coreschema             0.0.4
cryptography           3.1
datas                  0.2.9
Django                 2.0.3
django-celery          3.2.2
django-filter          2.3.0
django-rest-swagger    2.2.0
djangorestframework    3.9.2
dwebsocket             0.4.2
eventlet               0.22.1
Flask                  1.1.2
Flask-BasicAuth        0.2.0
flower                 0.9.2
gevent                 20.6.2
geventhttpclient       1.4.4
greenlet               0.4.16
har2case               0.3.1
HTMLTestRunner-Python3 0.8.0
HttpRunner             1.5.8
idna                   2.6
importlib-metadata     1.7.0
itsdangerous           1.1.0
itypes                 1.2.0
Jinja2                 2.11.2
jmespath               0.9.5
kombu                  4.6.11
locust                 1.2.2
loguru                 0.4.1
Markdown               3.2.2
MarkupSafe             1.1.1
more-itertools         8.5.0
msgpack                1.0.0
mysql-connector        2.2.9
mysql-connector-python 8.0.21
mysqlclient            1.3.12
openapi-codec          1.3.2
packaging              20.4
paramiko               2.4.1
pathspec               0.8.0
pip                    20.2.3
pluggy                 0.13.1
prompt-toolkit         3.0.7
psutil                 5.7.2
py                     1.9.0
pyasn1                 0.4.8
pycparser              2.20
pydantic               1.6.1
PyMySQL                0.10.0
PyNaCl                 1.4.0
pyparsing              2.4.7
pytest                 5.4.3
pytest-html            2.1.1
pytest-metadata        1.10.0
pytz                   2020.1
PyYAML                 3.12
pyzmq                  19.0.2
regex                  2020.7.14
requests               2.18.4
requests-toolbelt      0.9.1
sentry-sdk             0.14.4
setuptools             47.1.0
simplejson             3.17.2
six                    1.15.0
sqlparse               0.3.1
toml                   0.10.1
tornado                5.1.1
typed-ast              1.4.1
uritemplate            3.0.1
urllib3                1.22
vine                   1.3.0
wcwidth                0.2.5
Werkzeug               1.0.1
win32-setctime         1.0.1
zipp                   3.1.0
zope.event             4.4
zope.interface         5.1.0

参考：https://stackoverflow.com/questions/32757259/celery-no-module-named-five