我是django 1.7和python3的新手.我正在使用OSX.正如我在线关注django 1.7文档,
我试过了
python3 manage.py migrate结果
Operations to perform:Apply all migrations: auth, contenttypes, sessions, adminRunning migrations:No migrations to apply.Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/contenttypes/models.py", line 44, in get_for_modelct = self._get_from_cache(opts) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/contenttypes/models.py", line 34, in _get_from_cachereturn self.__class__._cache[self.db][key]KeyError: 'default'During handling of the above exception, another exception occurred:Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in executereturn self.cursor.execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/mysql/base.py", line 128, in executereturn self.cursor.execute(query, args) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 184, in executeself.errorhandler(self, exc, value) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/connections.py", line 37, in defaulterrorhandlerraise errorvalue File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 171, in executer = self._query(query) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 330, in _queryrowcount = self._do_query(q) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 294, in _do_querydb.query(q)_mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%s AND `django_content_type`.`model` = %s) LIMIT 21' at line 1")The above exception was the direct cause of the following exception:Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/contenttypes/models.py", line 50, in get_for_modeldefaults={'name': smart_text(opts.verbose_name_raw)}, File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/manager.py", line 92, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/query.py", line 422, in get_or_create return self.get(**lookup), False File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/query.py", line 351, in getnum = len(clone) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/query.py", line 122, in __len__self._fetch_all() File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/query.py", line 966, in _fetch_allself._result_cache = list(self.iterator()) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/query.py", line 265, in iteratorfor row in compiler.results_iter(): File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/sql/compiler.py", line 700, in results_iterfor rows in self.execute_sql(MULTI): File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/models/sql/compiler.py", line 786, in execute_sqlcursor.execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/utils.py", line 81, in executereturn super(CursorDebugWrapper, self).execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in executereturn self.cursor.execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/utils.py", line 94, in __exit__six.reraise(dj_exc_type, dj_exc_value, traceback) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/utils/six.py", line 549, in reraiseraise value.with_traceback(tb) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/utils.py", line 65, in executereturn self.cursor.execute(sql, params) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/mysql/base.py", line 128, in executereturn self.cursor.execute(query, args) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 184, in executeself.errorhandler(self, exc, value) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/connections.py", line 37, in defaulterrorhandlerraise errorvalue File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 171, in executer = self._query(query) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 330, in _queryrowcount = self._do_query(q) File "/Users/NAME/Library/Python/3.4/lib/python/site-packages/MySQLdb/cursors.py", line 294, in _do_query db.query(q)django.db.utils.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%s AND `django_content_type`.`model` = %s) LIMIT 21' at line 1")During handling of the above exception, another exception occurred:Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_lineutility.execute() File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 377, in executeself.fetch_command(subcommand).run_from_argv(self.argv) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/base.py", line 288, in run_from_argvself.execute(*args, **options.__dict__) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/base.py", line 338, in executeoutput = self.handle(*args, **options) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 164, in handleemit_post_migrate_signal(created_models, self.verbosity, self.interactive, connection.alias) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core/management/sql.py", line 268, in emit_post_migrate_signalusing=db) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/dispatch/dispatcher.py", line 198, in sendresponse = receiver(signal=self, sender=sender, **named) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/auth/management/__init__.py", line 83, in create_permissionsctype = ContentType.objects.db_manager(using).get_for_model(klass) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/contenttypes/models.py", line 58, in get_for_model" is migrated before trying to migrate apps individually."RuntimeError: Error creating new content types. Please make sure contenttypes is migrated before trying to migrate apps individually.`我不知道这意味着什么,我相信这是不对的.
迁移是否成功？
请帮忙.谢谢
这是我的/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/contrib/contenttypes/models.py
from __future__ import unicode_literalsfrom django.apps import appsfrom django.db import modelsfrom django.db.utils import OperationalError, ProgrammingErrorfrom django.utils.translation import ugettext_lazy as _from django.utils.encoding import smart_text, force_textfrom django.utils.encoding import python_2_unicode_compatibleclass ContentTypeManager(models.Manager): # Cache to avoid re-looking up ContentType objects all over the place. # This cache is shared by all the get_for_* methods. _cache = {} def get_by_natural_key(self, app_label, model): try: ct = self.__class__._cache[self.db][(app_label, model)] except KeyError: ct = self.get(app_label=app_label, model=model) self._add_to_cache(self.db, ct) return ct def _get_opts(self, model, for_concrete_model): if for_concrete_model: model = model._meta.concrete_model elif model._deferred: model = model._meta.proxy_for_model return model._meta def _get_from_cache(self, opts): key = (opts.app_label, opts.model_name) return self.__class__._cache[self.db][key] def get_for_model(self, model, for_concrete_model=True): """ Returns the ContentType object for a given model, creating the ContentType if necessary. Lookups are cached so that subsequent lookups for the same model don't hit the database. """ opts = self._get_opts(model, for_concrete_model) try: ct = self._get_from_cache(opts) except KeyError: try: ct, created = self.get_or_create( app_label=opts.app_label, model=opts.model_name, defaults={'name': smart_text(opts.verbose_name_raw)}, ) except (OperationalError, ProgrammingError): # It's possible to migrate a single app before contenttypes, # as it's not a required initial dependency (it's contrib!) # Have a nice error for this. raise RuntimeError( "Error creating new content types. Please make sure contenttypes" " is migrated before trying to migrate apps individually." ) self._add_to_cache(self.db, ct) return ct def get_for_models(self, *models, **kwargs): """ Given *models, returns a dictionary mapping {model: content_type}. """ for_concrete_models = kwargs.pop('for_concrete_models', True) # Final results results = {} # models that aren't already in the cache needed_app_labels = set() needed_models = set() needed_opts = set() for model in models: opts = self._get_opts(model, for_concrete_models) try: ct = self._get_from_cache(opts) except KeyError: needed_app_labels.add(opts.app_label) needed_models.add(opts.model_name) needed_opts.add(opts) else: results[model] = ct if needed_opts: cts = self.filter( app_label__in=needed_app_labels, model__in=needed_models ) for ct in cts: model = ct.model_class() if model._meta in needed_opts: results[model] = ct needed_opts.remove(model._meta) self._add_to_cache(self.db, ct) for opts in needed_opts: # These weren't in the cache, or the DB, create them. ct = self.create( app_label=opts.app_label, model=opts.model_name, name=smart_text(opts.verbose_name_raw), ) self._add_to_cache(self.db, ct) results[ct.model_class()] = ct return results def get_for_id(self, id): """ Lookup a ContentType by ID. Uses the same shared cache as get_for_model (though ContentTypes are obviously not created on-the-fly by get_by_id). """ try: ct = self.__class__._cache[self.db][id] except KeyError: # This could raise a DoesNotExist; that's correct behavior and will # make sure that only correct ctypes get stored in the cache dict. ct = self.get(pk=id) self._add_to_cache(self.db, ct) return ct def clear_cache(self): """ Clear out the content-type cache. This needs to happen during database flushes to prevent caching of "stale" content type IDs (see django.contrib.contenttypes.management.update_contenttypes for where this gets called). """ self.__class__._cache.clear() def _add_to_cache(self, using, ct): """Insert a ContentType into the cache.""" # Note it's possible for ContentType objects to be stale; model_class() will return None. # Hence, there is no reliance on model._meta.app_label here, just using the model fields instead. key = (ct.app_label, ct.model) self.__class__._cache.setdefault(using, {})[key] = ct self.__class__._cache.setdefault(using, {})[ct.id] = ct@python_2_unicode_compatibleclass ContentType(models.Model): name = models.CharField(max_length=100) app_label = models.CharField(max_length=100) model = models.CharField(_('python model class name'), max_length=100) objects = ContentTypeManager() class Meta: verbose_name = _('content type') verbose_name_plural = _('content types') db_table = 'django_content_type' ordering = ('name',) unique_together = (('app_label', 'model'),) def __str__(self): # self.name is deprecated in favor of using model's verbose_name, which # can be translated. Formal deprecation is delayed until we have DB # migration to be able to remove the field from the database along with # the attribute. # # We return self.name only when users have changed its value from the # initial verbose_name_raw and might rely on it. model = self.model_class() if not model or self.name != model._meta.verbose_name_raw: return self.name else: return force_text(model._meta.verbose_name) def model_class(self): "Returns the Python model class for this type of content." try: return apps.get_model(self.app_label, self.model) except LookupError: return None def get_object_for_this_type(self, **kwargs): """ Returns an object of this type for the keyword arguments given. Basically, this is a proxy around this object_type's get_object() model method. The ObjectNotExist exception, if thrown, will not be caught, so code that calls this method should catch it. """ return self.model_class()._base_manager.using(self._state.db).get(**kwargs) def get_all_objects_for_this_type(self, **kwargs): """ Returns all objects of this type for the keyword arguments given. """ return self.model_class()._base_manager.using(self._state.db).filter(**kwargs) def natural_key(self): return (self.app_label, self.model)解决方法:
我相信它是与mysql的依赖.切换到postgresql后,一切都解决了.我发现python与mysql的连接器只有python 3.3,我使用的是python3.4.这可能是原因,我找不到mysql和python 3.4的连接器.
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