OperationalError

When I type Course.objects.all() I get an Import error while I have imported Course class. What does this error mean? And how can I fix it? I tried manage.py migrate and manage.py syncdb, while it says :Unknown command: 'syncdb'.

what should I do??

OperationalError Traceback (most recent call last) /Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/utils.py in execute(self, sql, params) 63 else: ---> 64 return self.cursor.execute(sql, params) 65

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py in execute(self, query, params) 336 query = self.convert_query(query) --> 337 return Database.Cursor.execute(self, query, params) 338

OperationalError: no such table: courses_course

The above exception was the direct cause of the following exception:

OperationalError Traceback (most recent call last) <ipython-input-6-6970514bfc33> in <module>() ----> 1 c.save()

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/base.py in save(self, force_insert, force_update, using, update_fields) 794 795 self.save_base(using=using, force_insert=force_insert, --> 796 force_update=force_update, update_fields=update_fields) 797 save.alters_data = True 798

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/base.py in save_base(self, raw, force_insert, force_update, using, update_fields) 822 if not raw: 823 self._save_parents(cls, using, update_fields) --> 824 updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) 825 # Store the database on which the object was saved 826 self._state.db = using

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/base.py in _save_table(self, raw, cls, force_insert, force_update, using, update_fields) 906 907 update_pk = bool(meta.has_auto_field and not pk_set) --> 908 result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) 909 if update_pk: 910 setattr(self, meta.pk.attname, result)

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/base.py in _do_insert(self, manager, using, fields, update_pk, raw) 945 """ 946 return manager._insert([self], fields=fields, return_id=update_pk, --> 947 using=using, raw=raw) 948 949 def delete(self, using=None, keep_parents=False):

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/manager.py in manager_method(self, *args, **kwargs) 83 def create_method(name, method): 84 def manager_method(self, *args, **kwargs): ---> 85 return getattr(self.get_queryset(), name)(*args, **kwargs) 86 manager_method.name = method.name 87 manager_method.doc = method.doc

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/query.py in _insert(self, objs, fields, return_id, raw, using) 1043 query = sql.InsertQuery(self.model) 1044 query.insert_values(fields, objs, raw=raw) -> 1045 return query.get_compiler(using=using).execute_sql(return_id) 1046 _insert.alters_data = True 1047 _insert.queryset_only = False

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/models/sql/compiler.py in execute_sql(self, return_id) 1052 with self.connection.cursor() as cursor: 1053 for sql, params in self.as_sql(): -> 1054 cursor.execute(sql, params) 1055 if not (return_id and cursor): 1056 return

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/utils.py in execute(self, sql, params) 77 start = time() 78 try: ---> 79 return super(CursorDebugWrapper, self).execute(sql, params) 80 finally: 81 stop = time()

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/utils.py in execute(self, sql, params) 62 return self.cursor.execute(sql) 63 else: ---> 64 return self.cursor.execute(sql, params) 65 66 def executemany(self, sql, param_list):

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/utils.py in exit(self, exc_type, exc_value, traceback) 92 if dj_exc_type not in (DataError, IntegrityError): 93 self.wrapper.errors_occurred = True ---> 94 six.reraise(dj_exc_type, dj_exc_value, traceback) 95 96 def call(self, func):

/Users/simin/anaconda/lib/python3.5/site-packages/django/utils/six.py in reraise(tp, value, tb) 683 value = tp() 684 if value.traceback is not tb: --> 685 raise value.with_traceback(tb) 686 raise value 687

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/utils.py in execute(self, sql, params) 62 return self.cursor.execute(sql) 63 else: ---> 64 return self.cursor.execute(sql, params) 65 66 def executemany(self, sql, param_list):

/Users/simin/anaconda/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py in execute(self, query, params) 335 return Database.Cursor.execute(self, query) 336 query = self.convert_query(query) --> 337 return Database.Cursor.execute(self, query, params) 338 339 def executemany(self, query, param_list):

OperationalError: no such table: courses_course