Python functional.empty方法代码示例

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def _setup(self, name=None):
        """
        Load the settings module pointed to by the environment variable. This
        is used the first time we need any settings at all, if the user has not
        previously configured the settings manually.
        """
        try:
            settings_module = os.environ[ENVIRONMENT_VARIABLE]
            if not settings_module: # If it's set but is an empty string.
                raise KeyError
        except KeyError:
            desc = ("setting %s" % name) if name else "settings"
            raise ImproperlyConfigured(
                "Requested %s, but settings are not configured. "
                "You must either define the environment variable %s "
                "or call settings.configure() before accessing settings."
                % (desc, ENVIRONMENT_VARIABLE))

        self._wrapped = Settings(settings_module)
        self._configure_logging() 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def __init__(self, *args, **kwargs):
        super(DefaultStorageFinder, self).__init__(*args, **kwargs)
        base_location = getattr(self.storage, 'base_location', empty)
        if not base_location:
            raise ImproperlyConfigured("The storage backend of the "
                                       "staticfiles finder %r doesn't have "
                                       "a valid location." % self.__class__) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def __getattr__(self, name):
        if self._wrapped is empty:
            self._setup(name)
        return getattr(self._wrapped, name) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def configure(self, default_settings=global_settings, **options):
        """
        Called to manually configure the settings. The 'default_settings'
        parameter sets where to retrieve any unspecified values from (its
        argument must support attribute access (__getattr__)).
        """
        if self._wrapped is not empty:
            raise RuntimeError('Settings already configured.')
        holder = UserSettingsHolder(default_settings)
        for name, value in options.items():
            setattr(holder, name, value)
        self._wrapped = holder 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        base_location = getattr(self.storage, 'base_location', empty)
        if not base_location:
            raise ImproperlyConfigured("The storage backend of the "
                                       "staticfiles finder %r doesn't have "
                                       "a valid location." % self.__class__) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def configure(self, default_settings=global_settings, **options):
        """
        Called to manually configure the settings. The 'default_settings'
        parameter sets where to retrieve any unspecified values from (its
        argument must support attribute access (__getattr__)).
        """
        if self._wrapped is not empty:
            raise RuntimeError('Settings already configured.')
        holder = UserSettingsHolder(default_settings)
        for name, value in options.items():
            setattr(holder, name, value)
        self._wrapped = holder
        self._configure_logging() 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def test_copy_list_no_evaluation(self):
        # Copying a list doesn't force evaluation.
        lst = [1, 2, 3]

        obj = self.lazy_wrap(lst)
        obj2 = copy.copy(obj)

        self.assertIsNot(obj, obj2)
        self.assertIs(obj._wrapped, empty)
        self.assertIs(obj2._wrapped, empty) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def test_copy_class_no_evaluation(self):
        # Copying a class doesn't force evaluation.
        foo = Foo()

        obj = self.lazy_wrap(foo)
        obj2 = copy.copy(obj)

        self.assertIsNot(obj, obj2)
        self.assertIs(obj._wrapped, empty)
        self.assertIs(obj2._wrapped, empty) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def test_deepcopy_list_no_evaluation(self):
        # Deep copying doesn't force evaluation.
        lst = [1, 2, 3]

        obj = self.lazy_wrap(lst)
        obj2 = copy.deepcopy(obj)

        self.assertIsNot(obj, obj2)
        self.assertIs(obj._wrapped, empty)
        self.assertIs(obj2._wrapped, empty) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def test_deepcopy_class_no_evaluation(self):
        # Deep copying doesn't force evaluation.
        foo = Foo()

        obj = self.lazy_wrap(foo)
        obj2 = copy.deepcopy(obj)

        self.assertIsNot(obj, obj2)
        self.assertIs(obj._wrapped, empty)
        self.assertIs(obj2._wrapped, empty) 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def test_repr(self):
        # First, for an unevaluated SimpleLazyObject
        obj = self.lazy_wrap(42)
        # __repr__ contains __repr__ of setup function and does not evaluate
        # the SimpleLazyObject
        self.assertRegex(repr(obj), '^<SimpleLazyObject:')
        self.assertIs(obj._wrapped, empty)  # make sure evaluation hasn't been triggered

        self.assertEqual(obj, 42)  # evaluate the lazy object
        self.assertIsInstance(obj._wrapped, int)
        self.assertEqual(repr(obj), '<SimpleLazyObject: 42>') 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def __init__(self, settings_module):
        # update this dict from global settings (but only for ALL_CAPS settings)
        for setting in dir(global_settings):
            if setting.isupper():
                setattr(self, setting, getattr(global_settings, setting))

        # store the settings module in case someone later cares
        self.SETTINGS_MODULE = settings_module

        mod = importlib.import_module(self.SETTINGS_MODULE)

        tuple_settings = (
            "ALLOWED_INCLUDE_ROOTS",
            "INSTALLED_APPS",
            "TEMPLATE_DIRS",
            "LOCALE_PATHS",
        )
        self._explicit_settings = set()
        for setting in dir(mod):
            if setting.isupper():
                setting_value = getattr(mod, setting)

                if (setting in tuple_settings and
                        isinstance(setting_value, six.string_types)):
                    raise ImproperlyConfigured("The %s setting must be a tuple. "
                            "Please fix your settings." % setting)
                setattr(self, setting, setting_value)
                self._explicit_settings.add(setting)

        if not self.SECRET_KEY:
            raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")

        if ('django.contrib.auth.middleware.AuthenticationMiddleware' in self.MIDDLEWARE_CLASSES and
                'django.contrib.auth.middleware.SessionAuthenticationMiddleware' not in self.MIDDLEWARE_CLASSES):
            warnings.warn(
                "Session verification will become mandatory in Django 1.10. "
                "Please add 'django.contrib.auth.middleware.SessionAuthenticationMiddleware' "
                "to your MIDDLEWARE_CLASSES setting when you are ready to opt-in after "
                "reading the upgrade considerations in the 1.8 release notes.",
                RemovedInDjango110Warning
            )

        if hasattr(time, 'tzset') and self.TIME_ZONE:
            # When we can, attempt to validate the timezone. If we can't find
            # this file, no check happens and it's harmless.
            zoneinfo_root = '/usr/share/zoneinfo'
            if (os.path.exists(zoneinfo_root) and not
                    os.path.exists(os.path.join(zoneinfo_root, *(self.TIME_ZONE.split('/'))))):
                raise ValueError("Incorrect timezone setting: %s" % self.TIME_ZONE)
            # Move the time zone info into os.environ. See ticket #2315 for why
            # we don't do this unconditionally (breaks Windows).
            os.environ['TZ'] = self.TIME_ZONE
            time.tzset() 

# 需要导入模块: from django.utils import functional [as 别名]
# 或者: from django.utils.functional import empty [as 别名]
def __init__(self, settings_module):
        # update this dict from global settings (but only for ALL_CAPS settings)
        for setting in dir(global_settings):
            if setting == setting.upper():
                setattr(self, setting, getattr(global_settings, setting))

        # store the settings module in case someone later cares
        self.SETTINGS_MODULE = settings_module

        try:
            mod = importlib.import_module(self.SETTINGS_MODULE)
        except ImportError as e:
            raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (self.SETTINGS_MODULE, e))

        # Settings that should be converted into tuples if they're mistakenly entered
        # as strings.
        tuple_settings = ("INSTALLED_APPS", "TEMPLATE_DIRS")

        for setting in dir(mod):
            if setting == setting.upper():
                setting_value = getattr(mod, setting)
                if setting in tuple_settings and \
                        isinstance(setting_value, six.string_types):
                    warnings.warn("The %s setting must be a tuple. Please fix your "
                                  "settings, as auto-correction is now deprecated." % setting,
                        PendingDeprecationWarning)
                    setting_value = (setting_value,) # In case the user forgot the comma.
                setattr(self, setting, setting_value)

        if not self.SECRET_KEY:
            raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")

        if hasattr(time, 'tzset') and self.TIME_ZONE:
            # When we can, attempt to validate the timezone. If we can't find
            # this file, no check happens and it's harmless.
            zoneinfo_root = '/usr/share/zoneinfo'
            if (os.path.exists(zoneinfo_root) and not
                    os.path.exists(os.path.join(zoneinfo_root, *(self.TIME_ZONE.split('/'))))):
                raise ValueError("Incorrect timezone setting: %s" % self.TIME_ZONE)
            # Move the time zone info into os.environ. See ticket #2315 for why
            # we don't do this unconditionally (breaks Windows).
            os.environ['TZ'] = self.TIME_ZONE
            time.tzset()