python - Django filter query - doesn't work -

i have problems django, want write simple query doesn't work.

model:

class games(models.model):     name = models.charfield(max_length=128)     path_to_folder = models.charfield(max_length=256)     description = models.textfield()     cover = models.urlfield()      def __str__(self):         return self.name 

i trying (it should find in opinion):

>>> gamepanel.models import games >>> e = games.objects.all() >>> print (e) [<games: call of duty 4>] >>> e[0].name 'call of duty 4' >>> q = games.objects.filter(name=e[0].name) 

but when wrote last line , hit enter get:

traceback (most recent call last): file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 404, in get_field_by_name return self._name_map[name] attributeerror: 'options' object has no attribute '_name_map'  during handling of above exception, exception occurred:  traceback (most recent call last): file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 518, in get_all_related_m2m_objects_with_model cache = self._related_many_to_many_cache attributeerror: 'options' object has no attribute '_related_many_to_many_cache'  during handling of above exception, exception occurred:  traceback (most recent call last): file "/usr/lib/python3.4/code.py", line 90, in runcode exec(code, self.locals) file "<input>", line 1, in <module> file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/manager.py", line 80, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/query.py", line 702, in filter return self._filter_or_exclude(false, *args, **kwargs) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/query.py", line 720, in _filter_or_exclude clone.query.add_q(q(*args, **kwargs)) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/sql/query.py", line 1316, in add_q clause, require_inner = self._add_q(where_part, self.used_aliases) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/sql/query.py", line 1343, in _add_q current_negated=current_negated, connector=connector) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/sql/query.py", line 1164, in build_filter lookups, parts, reffed_aggregate = self.solve_lookup_type(arg) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/sql/query.py", line 1076, in solve_lookup_type _, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta()) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/sql/query.py", line 1368, in names_to_path field, model, direct, m2m = opts.get_field_by_name(name) file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 406, in get_field_by_name cache = self.init_name_map() file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 435, in init_name_map f, model in self.get_all_related_m2m_objects_with_model(): file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 520, in get_all_related_m2m_objects_with_model cache = self._fill_related_many_to_many_cache() file "/home/zoli/desktop/django-master/newest/django-trunk/django/db/models/options.py", line 534, in _fill_related_many_to_many_cache klass in self.apps.get_models(): file "/usr/lib/python3.4/functools.py", line 428, in wrapper result = user_function(*args, **kwds) file "/home/zoli/desktop/django-master/newest/django-trunk/django/apps/registry.py", line 168, in get_models self.check_models_ready() file "/home/zoli/desktop/django-master/newest/django-trunk/django/apps/registry.py", line 131, in check_models_ready raise appregistrynotready("models aren't loaded yet.") 

django.core.exceptions.appregistrynotready: models aren't loaded yet.

i have no idea doing wrong, tried same .id doesn't work neither.

in django 1.7 , later can't use models without explicitly initialising django first. run following commands:

import django django.setup() 

and after queries work.

relevant django doc: https://docs.djangoproject.com/en/dev/ref/applications/#initialization-process