Django2.1.7 ImportError: cannot import name 'util' from 'django.forms' (/Users/lib/python3.7/site-packages/django/forms/__init__.py)

Question

During migration from Django1.5 to Django2.1.7 we are facing an implicit import error in library function when trying to start server.

Traceback (most recent call last):
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x10945f950>
Traceback (most recent call last):
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/utils/autoreload.py", line 248, in raise_last_exception
    raise _exception[1]
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/core/management/__init__.py", line 337, in execute
    autoreload.check_errors(django.setup)()
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/apps/registry.py", line 89, in populate
    app_config = AppConfig.create(entry)
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/apps/config.py", line 90, in create
    module = import_module(entry)
  File "/Users/MAK/Envs/lifemed3/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 "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/json_field/__init__.py", line 1, in <module>
    from json_field.fields import JSONField
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/json_field/fields.py", line 4, in <module>
    from json_field.forms import JSONFormField
  File "/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/json_field/forms.py", line 5, in <module>
    from django.forms import fields, util
ImportError: cannot import name 'util' from 'django.forms' (/Users/MAK/Envs/lifemed3/lib/python3.7/site-packages/django/forms/__init__.py)

We have already check this answer about circular dependency, but as it was in code level and was easily solvable, but in terms of library what would be the best way to solve this?

FYI: we are moving to python3.7 with Django2.1.7 from python 2.7 and django 1.5.5

UPDATE (Solved)

According to mfrackowiak's answer below we have to fork their repo , applied patch for the support and install from the changed version . then it worked for me

Answer 1

I found these two packages:

• If this is the package you're using django-json-field , then look at the last release which was in 2014 so i'm pretty sure this package is incompatible with Django 2.0

• If jsonfield is your package then even they don't have support for Django 2.0 . They have 1.8 to 1.11

Post in your code what you intended to do using that package then i might be able to give yo a custom solution or package which actually supports 2.0 and does the work.

Answer 2

由于该包似乎很长时间没有维护，因此处理此错误的最佳方法是寻找替代方案，或者只是 fork 存储库并自行更新它以便它仍然可以工作（可能比调整另一个代码库更容易）图书馆）。