Settings.__getattribute__() - Code Metrics - Inspection of "[WIP] Version 2.0" - sunscrapers/djoser - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#259)

by Piotr

created 2018-01-31 23:28 UTC

Settings.getattribute() A

↳ Parent: Project

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	4
c	1
b	0
f	0
dl	0
loc	13
rs	9.2

from django.conf import settings as django_settings
class SomeClass:
    def some_method(self):
        """Do x and return foo."""
from django.test.signals import setting_changed
from django.utils import six
from django.utils.functional import LazyObject
from django.utils.module_loading import import_string


DJOSER_SETTINGS_NAMESPACE = 'DJOSER'

default_settings = {

    'PASSWORD_RESET_SHOW_EMAIL_NOT_FOUND': False,
    'PASSWORD_VALIDATORS': [],
    'TOKEN_MODEL': None,
    'SOCIAL_AUTH_TOKEN_STRATEGY': 'djoser.social.token.jwt.TokenStrategy',
    'SOCIAL_AUTH_ALLOWED_REDIRECT_URIS': [],
    'VIEW_PIPELINE_ADAPTER':
        'djoser.pipelines.base.default_view_pipeline_adapter',

    'PIPELINES': {
        'user_activate': [
            'djoser.pipelines.user_activate.serialize_request',
            'djoser.pipelines.user_activate.perform',
            'djoser.pipelines.user_activate.signal',
            'djoser.pipelines.email.confirmation_email',
        ],
        'user_create': [
            'djoser.pipelines.user_create.serialize_request',
            'djoser.pipelines.user_create.perform',
            'djoser.pipelines.user_create.serialize_instance',
            'djoser.pipelines.user_create.signal',
            'djoser.pipelines.email.confirmation_email',
        ],
        'user_detail': [
            'djoser.pipelines.user_detail.perform',
            'djoser.pipelines.user_detail.serialize_instance',
        ],
        'user_update': [
            'djoser.pipelines.user_update.serialize_request',
            'djoser.pipelines.user_update.perform',
            'djoser.pipelines.user_update.signal',
            'djoser.pipelines.user_update.serialize_instance',
        ],
        'user_delete': [
            'djoser.pipelines.user_delete.serialize_request',
            'djoser.pipelines.user_delete.perform',
            'djoser.pipelines.user_delete.signal',
        ],
        'username_update': [
            'djoser.pipelines.username_update.serialize_request',
            'djoser.pipelines.username_update.perform',
            'djoser.pipelines.username_update.signal',
        ],
        'password_update': [
            'djoser.pipelines.password_update.serialize_request',
            'djoser.pipelines.password_update.perform',
            'djoser.pipelines.password_update.signal',
        ],
        'password_reset': [
            'djoser.pipelines.password_reset.serialize_request',
            'djoser.pipelines.password_reset.perform',
        ],
        'password_reset_confirm': [
            'djoser.pipelines.password_reset_confirm.serialize_request',
            'djoser.pipelines.password_reset_confirm.perform',
            'djoser.pipelines.password_reset_confirm.signal',
        ],
        'token_create': [
            'djoser.pipelines.token_create.serialize_request',
            'djoser.pipelines.token_create.perform',
            'djoser.pipelines.token_create.signal',
        ],
        'token_destroy': [
            'djoser.pipelines.token_destroy.perform',
            'djoser.pipelines.token_destroy.signal',
        ]
    },
    'SERIALIZERS': {
        'user_activate':
            'djoser.serializers.UserActivateSerializer',
        'user_create':
            'djoser.serializers.UserCreateSerializer',
        'user':
            'djoser.serializers.UserSerializer',
        'user_delete':
            'djoser.serializers.UserDeleteSerializer',
        'username_update':
            'djoser.serializers.UsernameUpdateSerializer',
        'password_update':
            'djoser.serializers.PasswordUpdateSerializer',
        'password_reset':
            'djoser.serializers.PasswordResetSerializer',
        'password_reset_confirm':
            'djoser.serializers.PasswordResetConfirmSerializer',
        'token':
            'djoser.serializers.TokenSerializer',
        'token_create':
            'djoser.serializers.TokenCreateSerializer',
    },
    'EMAIL': {
        'activation': 'djoser.email.ActivationEmail',
        'confirmation': 'djoser.email.ConfirmationEmail',
        'password_reset': 'djoser.email.PasswordResetEmail',
    },
}

SETTINGS_TO_IMPORT = [
    'TOKEN_MODEL', 'SOCIAL_AUTH_TOKEN_STRATEGY', 'VIEW_PIPELINE_ADAPTER',
    'PIPELINES', 'SERIALIZERS', 'EMAIL'
]


class Settings(object):
class SomeClass:
    def some_method(self):
        """Do x and return foo."""
    def __init__(self, default_settings, explicit_overriden_settings=None):
param = 5

class Foo:
    def __init__(self, param):   # "param" would be flagged here
        self.param = param
        if explicit_overriden_settings is None:
            explicit_overriden_settings = {}

        overriden_settings = getattr(
            django_settings, DJOSER_SETTINGS_NAMESPACE, {}
        ) or explicit_overriden_settings

        self._load_default_settings()
        self._override_settings(overriden_settings)

    def __getattribute__(self, item):
        """
        Override is necessary to achieve lazy imports in cases where imported
        resource depends on settings e.g. some serializers use TOKEN_MODEL.
        """
        setting_value = super(Settings, self).__getattribute__(item)
        if item in SETTINGS_TO_IMPORT:
            if isinstance(setting_value, str):
                setting_value = self._import_str_setting(item, setting_value)
            elif isinstance(setting_value, dict):
                setting_value = self._import_dict_setting(item, setting_value)

        return setting_value

    def _import_str_setting(self, item, value):
        value = import_string(value)
        setattr(self, item, value)
        return value

    def _import_dict_setting(self, item, value):
        for dict_key, dict_value in value.items():
            if isinstance(dict_value, str):
                value[dict_key] = import_string(dict_value)
                setattr(self, item, value)

            is_list_of_strings = (
                    isinstance(dict_value, list) and

                    all(isinstance(elem, str) for elem in dict_value)

            )
            if is_list_of_strings:
                value[dict_key] = [
                    import_string(func) for func in dict_value
                ]
                setattr(self, item, value)

        return value

    def _load_default_settings(self):
        for setting_name, setting_value in six.iteritems(default_settings):
            if setting_name.isupper():
                setattr(self, setting_name, setting_value)

    def _override_settings(self, overriden_settings):
        for setting_name, setting_value in six.iteritems(overriden_settings):
            value = setting_value
            setattr(self, setting_name, value)


class LazySettings(LazyObject):
class SomeClass:
    def some_method(self):
        """Do x and return foo."""
    def _setup(self, explicit_overriden_settings=None):

        self._wrapped = Settings(default_settings, explicit_overriden_settings)


settings = LazySettings()



def reload_djoser_settings(*args, **kwargs):
class SomeClass:
    def some_method(self):
        """Do x and return foo."""
    setting, value = kwargs['setting'], kwargs['value']
    if setting == DJOSER_SETTINGS_NAMESPACE:
        settings._setup(explicit_overriden_settings=value)
class MyParent:
    def __init__(self):
        self._x = 1;
        self.y = 2;

class MyChild(MyParent):
    def some_method(self):
        return self._x    # Ok, since accessed from a child class

class AnotherClass:
    def some_method(self, instance_of_my_child):
        return instance_of_my_child._x   # Would be flagged as AnotherClass is not
                                         # a child class of MyParent


setting_changed.connect(reload_djoser_settings)


1			from django.conf import settings as django_settings
			0 ignored issues – show Coding Style introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report This module should have a docstring. The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods: class SomeClass: def some_method(self): """Do x and return foo.""" If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions. Loading history...
2			from django.test.signals import setting_changed
3			from django.utils import six
4			from django.utils.functional import LazyObject
5			from django.utils.module_loading import import_string
6
7
8			DJOSER_SETTINGS_NAMESPACE = 'DJOSER'
9
10			default_settings = {
			0 ignored issues – show Coding Style Naming introduced 2018-01-31 00:49 UTC by Report Bug Copy Issue Report The name `default_settings` does not conform to the constant naming conventions (`(([A-Z_][A-Z0-9_])\|(__.__))$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
11			'PASSWORD_RESET_SHOW_EMAIL_NOT_FOUND': False,
12			'PASSWORD_VALIDATORS': [],
13			'TOKEN_MODEL': None,
14			'SOCIAL_AUTH_TOKEN_STRATEGY': 'djoser.social.token.jwt.TokenStrategy',
15			'SOCIAL_AUTH_ALLOWED_REDIRECT_URIS': [],
16			'VIEW_PIPELINE_ADAPTER':
17			'djoser.pipelines.base.default_view_pipeline_adapter',
18
19			'PIPELINES': {
20			'user_activate': [
21			'djoser.pipelines.user_activate.serialize_request',
22			'djoser.pipelines.user_activate.perform',
23			'djoser.pipelines.user_activate.signal',
24			'djoser.pipelines.email.confirmation_email',
25			],
26			'user_create': [
27			'djoser.pipelines.user_create.serialize_request',
28			'djoser.pipelines.user_create.perform',
29			'djoser.pipelines.user_create.serialize_instance',
30			'djoser.pipelines.user_create.signal',
31			'djoser.pipelines.email.confirmation_email',
32			],
33			'user_detail': [
34			'djoser.pipelines.user_detail.perform',
35			'djoser.pipelines.user_detail.serialize_instance',
36			],
37			'user_update': [
38			'djoser.pipelines.user_update.serialize_request',
39			'djoser.pipelines.user_update.perform',
40			'djoser.pipelines.user_update.signal',
41			'djoser.pipelines.user_update.serialize_instance',
42			],
43			'user_delete': [
44			'djoser.pipelines.user_delete.serialize_request',
45			'djoser.pipelines.user_delete.perform',
46			'djoser.pipelines.user_delete.signal',
47			],
48			'username_update': [
49			'djoser.pipelines.username_update.serialize_request',
50			'djoser.pipelines.username_update.perform',
51			'djoser.pipelines.username_update.signal',
52			],
53			'password_update': [
54			'djoser.pipelines.password_update.serialize_request',
55			'djoser.pipelines.password_update.perform',
56			'djoser.pipelines.password_update.signal',
57			],
58			'password_reset': [
59			'djoser.pipelines.password_reset.serialize_request',
60			'djoser.pipelines.password_reset.perform',
61			],
62			'password_reset_confirm': [
63			'djoser.pipelines.password_reset_confirm.serialize_request',
64			'djoser.pipelines.password_reset_confirm.perform',
65			'djoser.pipelines.password_reset_confirm.signal',
66			],
67			'token_create': [
68			'djoser.pipelines.token_create.serialize_request',
69			'djoser.pipelines.token_create.perform',
70			'djoser.pipelines.token_create.signal',
71			],
72			'token_destroy': [
73			'djoser.pipelines.token_destroy.perform',
74			'djoser.pipelines.token_destroy.signal',
75			]
76			},
77			'SERIALIZERS': {
78			'user_activate':
79			'djoser.serializers.UserActivateSerializer',
80			'user_create':
81			'djoser.serializers.UserCreateSerializer',
82			'user':
83			'djoser.serializers.UserSerializer',
84			'user_delete':
85			'djoser.serializers.UserDeleteSerializer',
86			'username_update':
87			'djoser.serializers.UsernameUpdateSerializer',
88			'password_update':
89			'djoser.serializers.PasswordUpdateSerializer',
90			'password_reset':
91			'djoser.serializers.PasswordResetSerializer',
92			'password_reset_confirm':
93			'djoser.serializers.PasswordResetConfirmSerializer',
94			'token':
95			'djoser.serializers.TokenSerializer',
96			'token_create':
97			'djoser.serializers.TokenCreateSerializer',
98			},
99			'EMAIL': {
100			'activation': 'djoser.email.ActivationEmail',
101			'confirmation': 'djoser.email.ConfirmationEmail',
102			'password_reset': 'djoser.email.PasswordResetEmail',
103			},
104			}
105
106			SETTINGS_TO_IMPORT = [
107			'TOKEN_MODEL', 'SOCIAL_AUTH_TOKEN_STRATEGY', 'VIEW_PIPELINE_ADAPTER',
108			'PIPELINES', 'SERIALIZERS', 'EMAIL'
109			]
110
111
112			class Settings(object):
			0 ignored issues – show Coding Style introduced 2018-01-22 14:22 UTC by Report Bug Copy Issue Report This class should have a docstring. The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods: class SomeClass: def some_method(self): """Do x and return foo.""" If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions. Loading history...
113			def __init__(self, default_settings, explicit_overriden_settings=None):
			0 ignored issues – show Comprehensibility Bug introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report `default_settings` is re-defining a name which is already available in the outer-scope (previously defined on line `10`). It is generally a bad practice to shadow variables from the outer-scope. In most cases, this is done unintentionally and might lead to unexpected behavior: param = 5 class Foo: def __init__(self, param): # "param" would be flagged here self.param = param Loading history... Unused Code introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report The argument `default_settings` seems to be unused. Loading history...
114			if explicit_overriden_settings is None:
115			explicit_overriden_settings = {}
116
117			overriden_settings = getattr(
118			django_settings, DJOSER_SETTINGS_NAMESPACE, {}
119			) or explicit_overriden_settings
120
121			self._load_default_settings()
122			self._override_settings(overriden_settings)
123
124			def __getattribute__(self, item):
125			"""
126			Override is necessary to achieve lazy imports in cases where imported
127			resource depends on settings e.g. some serializers use TOKEN_MODEL.
128			"""
129			setting_value = super(Settings, self).__getattribute__(item)
130			if item in SETTINGS_TO_IMPORT:
131			if isinstance(setting_value, str):
132			setting_value = self._import_str_setting(item, setting_value)
133			elif isinstance(setting_value, dict):
134			setting_value = self._import_dict_setting(item, setting_value)
135
136			return setting_value
137
138			def _import_str_setting(self, item, value):
139			value = import_string(value)
140			setattr(self, item, value)
141			return value
142
143			def _import_dict_setting(self, item, value):
144			for dict_key, dict_value in value.items():
145			if isinstance(dict_value, str):
146			value[dict_key] = import_string(dict_value)
147			setattr(self, item, value)
148
149			is_list_of_strings = (
150			isinstance(dict_value, list) and
			0 ignored issues – show Coding Style introduced 2018-01-31 00:49 UTC by Report Bug Copy Issue Report Wrong hanging indentation (remove 4 spaces). Loading history...
151			all(isinstance(elem, str) for elem in dict_value)
			0 ignored issues – show Coding Style introduced 2018-01-31 00:49 UTC by Report Bug Copy Issue Report Wrong hanging indentation (remove 4 spaces). Loading history...
152			)
153			if is_list_of_strings:
154			value[dict_key] = [
155			import_string(func) for func in dict_value
156			]
157			setattr(self, item, value)
158
159			return value
160
161			def _load_default_settings(self):
162			for setting_name, setting_value in six.iteritems(default_settings):
163			if setting_name.isupper():
164			setattr(self, setting_name, setting_value)
165
166			def _override_settings(self, overriden_settings):
167			for setting_name, setting_value in six.iteritems(overriden_settings):
168			value = setting_value
169			setattr(self, setting_name, value)
170
171
172			class LazySettings(LazyObject):
			0 ignored issues – show Coding Style introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report This class should have a docstring. The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods: class SomeClass: def some_method(self): """Do x and return foo.""" If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions. Loading history...
173			def _setup(self, explicit_overriden_settings=None):
			0 ignored issues – show Bug introduced 2018-01-22 15:28 UTC by Report Bug Copy Issue Report Parameters differ from overridden '_setup' method Loading history...
174			self._wrapped = Settings(default_settings, explicit_overriden_settings)
175
176
177			settings = LazySettings()
			0 ignored issues – show Coding Style Naming introduced 2018-01-17 17:38 UTC by Report Bug Copy Issue Report The name `settings` does not conform to the constant naming conventions (`(([A-Z_][A-Z0-9_])\|(__.__))$`). This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site. Loading history...
178
179
180			def reload_djoser_settings(args, *kwargs):
			0 ignored issues – show Coding Style introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report This function should have a docstring. The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods: class SomeClass: def some_method(self): """Do x and return foo.""" If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions. Loading history... Unused Code introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report The argument `args` seems to be unused. Loading history...
181			setting, value = kwargs['setting'], kwargs['value']
182			if setting == DJOSER_SETTINGS_NAMESPACE:
183			settings._setup(explicit_overriden_settings=value)
			0 ignored issues – show Coding Style Best Practice introduced 2017-08-24 11:14 UTC by Report Bug Copy Issue Report It seems like `_setup` was declared protected and should not be accessed from this context. Prefixing a member variable `_` is usually regarded as the equivalent of declaring it with protected visibility that exists in other languages. Consequentially, such a member should only be accessed from the same class or a child class: class MyParent: def __init__(self): self._x = 1; self.y = 2; class MyChild(MyParent): def some_method(self): return self._x # Ok, since accessed from a child class class AnotherClass: def some_method(self, instance_of_my_child): return instance_of_my_child._x # Would be flagged as AnotherClass is not # a child class of MyParent Loading history...
184
185
186			setting_changed.connect(reload_djoser_settings)
187

sunscrapers / djoser

Pull Request — master (#259)

Settings.__getattribute__() A

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Settings.getattribute() A