heroku deploy: ImportError: No module named 'django.contrib.staticfiles' - django

Question

I am deploying my app to heroku. I stuck at this code:
$ heroku run python mysite/manage.py migrate
The output are:
Running `python mysite/manage.py migrate` attached to terminal... up, run.8367
Traceback (most recent call last):
File "/app/mysite/django/apps/config.py", line 118, in create
cls = getattr(mod, cls_name)
AttributeError: 'module' object has no attribute 'staticfiles'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "mysite/manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/app/mysite/django/core/management/__init__.py", line 385, in execute_fr
om_command_line
utility.execute()
File "/app/mysite/django/core/management/__init__.py", line 354, in execute
django.setup()
File "/app/mysite/django/__init__.py", line 21, in setup
apps.populate(settings.INSTALLED_APPS)
File "/app/mysite/django/apps/registry.py", line 85, in populate
app_config = AppConfig.create(entry)
File "/app/mysite/django/apps/config.py", line 123, in create
import_module(entry)
File "/app/.heroku/python/lib/python3.3/importlib/__init__.py", line 90, in im
port_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1584, in _gcd_import
File "<frozen importlib._bootstrap>", line 1565, in _find_and_load
File "<frozen importlib._bootstrap>", line 1529, in _find_and_load_unlocked
ImportError: No module named 'django.contrib.staticfiles'
Could anyone helps me with that? I searched a lot on staticfiles, but it does not work...

Answer 1

Double-check that your staticfiles contrib is installed via:
pip install django-staticfiles
Note: If pip points to your Python 2 instance, then use pip3 instead.
Then verify your PYTHONPATH if it has the correct paths.