问题

Currently, I have upgraded version of Django from 2.0.6 to 3.0 and suddenly after calling python manage.py shell command got this error:

ImportError: cannot import name 'six' from 'django.utils' (/path-to-project/project/venv/lib/python3.7/site-packages/django/utils/init.py)

Full trace:

Traceback (most recent call last):
  File "manage.py", line 13, in <module>
    execute_from_command_line(sys.argv)
  File "/path-to-project/project/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "/path-to-project/project/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 377, in execute
    django.setup()
  File "/path-to-project/project/venv/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/path-to-project/project/venv/lib/python3.7/site-packages/django/apps/registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
  File "/path-to-project/project/venv/lib/python3.7/site-packages/django/apps/config.py", line 90, in create
    module = import_module(entry)
  File "/usr/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 "/path-to-project/project/venv/lib/python3.7/site-packages/corsheaders/__init__.py", line 1, in <module>
    from .checks import check_settings  # noqa: F401
  File "/path-to-project/project/venv/lib/python3.7/site-packages/corsheaders/checks.py", line 7, in <module>
    from django.utils import six

Similar Questions:

I read this Question and django-3.0, release note , but those answers couldn't help me.

回答1:

The Django 3.0.0 release notes specify that certain private Python 2 compatibility APIs were removed. Among those was django.utils.six.

For this error specifically @WillemVanOnsem noted that the module corsheaders was referencing this module.

For others encountering this same thing, looking at the file path on the last line of the stacktrace can help with identifying the problematic module. Another example of this I've seen is:

...
File "/path/to/project/venv/lib/python3.8/site-packages/parler/utils/conf.py", line 10, in <module>
    from django.utils import six
ImportError: cannot import name 'six' from 'django.utils' (/path/to/project/venv/lib/python3.8/site-packages/django/utils/__init__.py)

The module causing the issue in this case was parler. Hope this helps any others who encounter this issue.

回答2:

Why this error/exception?

From django-3.0release notes,

django.utils.six - Remove usage of this vendored library or switch to six.

means, django.utils.six module was removed from django-3.0 onwards.

My codebase isn't using "`django.utils.six`" module, then why this error?

This import error could be raised because of two reasons,

Most importantly, any of your installed packages are using the django.utils.six module
or maybe your codebase using the django.utils.six module

NOTE: Most of the time the first reason is the villain 😖😖

How can I identify which package is causing the error/exception?

The easy way is, look into your last few lines of error traceback, and it will tell you which package is causing the exceptions.

Examples

Example-1

In this example, corsheaders module caused the the import error

  File "/path-to-project/project/venv/lib/python3.7/site-packages/corsheaders/__init__.py", line 1, in 
    from .checks import check_settings  # noqa: F401
  File "/path-to-project/project/venv/lib/python3.7/site-packages/corsheaders/checks.py", line 7, in 
    from django.utils import six

Example-2

In this example, jsonfield module caused the the import error

  File "d:\production\myproject\venv\lib\site-packages\jsonfield\fields.py", line 21, in 
    from .encoder import JSONEncoder
  File "d:\production\myproject\venv\lib\site-packages\jsonfield\encoder.py", line 2, in 
    from django.utils import six, timezone
ImportError: cannot import name 'six' from 'django.utils' (d:\production\myproject\venv\lib\site-packages\django\utils\__init__.py)

Example-3

In this example parler module caused the import error

...
File "/path/to/project/venv/lib/python3.8/site-packages/parler/utils/conf.py", line 10, in 
    from django.utils import six
ImportError: cannot import name 'six' from 'django.utils' (/path/to/project/venv/lib/python3.8/site-packages/django/utils/__init__.py)

Example-4

In this example django_mysql module caused the import error

  File "/home/jerin/.virtualenvs/webscraperio/lib/python3.6/site-packages/django_mysql/checks.py", line 9, in 
    from django_mysql.utils import collapse_spaces
  File "/home/jerin/.virtualenvs/webscraperio/lib/python3.6/site-packages/django_mysql/utils.py", line 17, in 
    from django.utils import six
ImportError: cannot import name 'six'

What is the solution?

If the error raised because of some third-party packages like django-cors-headers,django-jsonfield, etc upgrade the corresponding package versions to latest versions.

If the error raised because from your codebase, use six package instead of django.utils.six module

回答3:

There are a number of libraries and add-ons to Django that use django.utils.six, which of course are now broken. The main one of concern is mysql-connector-python (8.0.18). The simple solution is to use the library external to Django, but the authors of these libraries will need to make their changes (or you could temporarily make the changes yourself....replace django.utils.six with six).

回答4:

As mentioned by Mohammad Masoumi, upgrading the packages will resolve the issue because corsheaders is supporting Django 3.0 now.

pip install --upgrade django-cors-headers

I also upgraded djangorestframework and drf_yasg to avoid this ImportError.

回答5:

I had the same problem. My issue was that used pip install django_taggit==0.22.2. I resolved that when I did 'pip install django_taggit==1.2.0' because it is latest version.

来源：https://stackoverflow.com/questions/59193514/importerror-cannot-import-name-six-from-django-utils

标签

django

python-3.x

upgrade

django-3.0

ImportError: cannot import name 'six' from 'django.utils'

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