python - Django model translation - cannot import name 'Constraint' -

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i want translate content of models fields django-modeltranslation.

when run 1 of these:

python manage.py makemigrations python manage.py runserver

i importerror: cannot import name 'constraint'

here traceback of 'makemigrations'

traceback (most recent call last):   file "manage.py", line 10, in <module>     execute_from_command_line(sys.argv)   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/core/management/__init__.py", line 350, in execute_from_command_line     utility.execute()   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/core/management/__init__.py", line 324, in execute     django.setup()   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/__init__.py", line 18, in setup     apps.populate(settings.installed_apps)   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/apps/registry.py", line 115, in populate     app_config.ready()   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/contrib/admin/apps.py", line 22, in ready     self.module.autodiscover()   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover     autodiscover_modules('admin', register_to=site)   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/django/utils/module_loading.py", line 50, in autodiscover_modules     import_module('%s.%s' % (app_config.name, module_to_search))   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/importlib/__init__.py", line 109, in import_module     return _bootstrap._gcd_import(name[level:], package, level)   file "<frozen importlib._bootstrap>", line 2254, in _gcd_import   file "<frozen importlib._bootstrap>", line 2237, in _find_and_load   file "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked   file "<frozen importlib._bootstrap>", line 1200, in _load_unlocked   file "<frozen importlib._bootstrap>", line 1129, in _exec   file "<frozen importlib._bootstrap>", line 1471, in exec_module   file "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/modeltranslation/admin.py", line 20, in <module>     modeltranslation.translator import translator   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/modeltranslation/translator.py", line 12, in <module>     modeltranslation.manager import (multilingualmanager, multilingualquerysetmanager,   file "/home/mat/desktop/python/pmm/venv/lib/python3.4/site-packages/modeltranslation/manager.py", line 19, in <module>     django.db.models.sql.where import constraint importerror: cannot import name 'constraint'

i use django1.9 , latest django-modeltranslation.

if cant me error, please recommand other model translation app.

i have came across of them:

django-multilingual-ds9

django-dbgettext

django-transmeta

but seem no longer supported. know if of these works , or know other working solution ?

if matters have admit use django-rosette

are sure using latest django-modeltranslation? issue reported while ago (https://github.com/deschler/django-modeltranslation/issues/349) , fixed in version 0.11rc1 (https://pypi.python.org/pypi/django-modeltranslation/0.11rc1).


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