Cannot do like #226
Cannot do like #226

A unittest reminded me why it doesn't catch ImportError,
it's because if there is a syntax error in the tasks.py module
the exception would be silenced, which makes it very hard to
debug.

kanemra/django-celery,axiom-data-science/django-celery,tkanemoto/django-celery,Amanit/django-celery,georgewhewell/django-celery,georgewhewell/django-celery,iris-edu-int/django-celery,celery/django-celery,celery/django-celery,nadios/django-celery,iris-edu-int/django-celery,Amanit/django-celery,kanemra/django-celery,axiom-data-science/django-celery,CloudNcodeInc/django-celery,kanemra/django-celery,digimarc/django-celery,nadios/django-celery,digimarc/django-celery,georgewhewell/django-celery,digimarc/django-celery,CloudNcodeInc/django-celery,iris-edu-int/django-celery,tkanemoto/django-celery,Amanit/django-celery,celery/django-celery,tkanemoto/django-celery,CloudNcodeInc/django-celery,axiom-data-science/django-celery