Ajoutez des fichiers projet.
This commit is contained in:
Ambulance Clerc
284
venv/Lib/site-packages/django/conf/__init__.py
Normal file
284
venv/Lib/site-packages/django/conf/__init__.py
Normal file
@@ -0,0 +1,284 @@
|
||||
"""
|
||||
Settings and configuration for Django.
|
||||
|
||||
Read values from the module specified by the DJANGO_SETTINGS_MODULE environment
|
||||
variable, and then from django.conf.global_settings; see the global_settings.py
|
||||
for a list of all possible variables.
|
||||
"""
|
||||
|
||||
import importlib
|
||||
import os
|
||||
import time
|
||||
import traceback
|
||||
import warnings
|
||||
from pathlib import Path
|
||||
|
||||
import django
|
||||
from django.conf import global_settings
|
||||
from django.core.exceptions import ImproperlyConfigured
|
||||
from django.utils.deprecation import RemovedInDjango50Warning
|
||||
from django.utils.functional import LazyObject, empty
|
||||
|
||||
ENVIRONMENT_VARIABLE = "DJANGO_SETTINGS_MODULE"
|
||||
|
||||
# RemovedInDjango50Warning
|
||||
USE_DEPRECATED_PYTZ_DEPRECATED_MSG = (
|
||||
'The USE_DEPRECATED_PYTZ setting, and support for pytz timezones is '
|
||||
'deprecated in favor of the stdlib zoneinfo module. Please update your '
|
||||
'code to use zoneinfo and remove the USE_DEPRECATED_PYTZ setting.'
|
||||
)
|
||||
|
||||
USE_L10N_DEPRECATED_MSG = (
|
||||
'The USE_L10N setting is deprecated. Starting with Django 5.0, localized '
|
||||
'formatting of data will always be enabled. For example Django will '
|
||||
'display numbers and dates using the format of the current locale.'
|
||||
)
|
||||
|
||||
|
||||
class SettingsReference(str):
|
||||
"""
|
||||
String subclass which references a current settings value. It's treated as
|
||||
the value in memory but serializes to a settings.NAME attribute reference.
|
||||
"""
|
||||
def __new__(self, value, setting_name):
|
||||
return str.__new__(self, value)
|
||||
|
||||
def __init__(self, value, setting_name):
|
||||
self.setting_name = setting_name
|
||||
|
||||
|
||||
class LazySettings(LazyObject):
|
||||
"""
|
||||
A lazy proxy for either global Django settings or a custom settings object.
|
||||
The user can manually configure settings prior to using them. Otherwise,
|
||||
Django uses the settings module pointed to by DJANGO_SETTINGS_MODULE.
|
||||
"""
|
||||
def _setup(self, name=None):
|
||||
"""
|
||||
Load the settings module pointed to by the environment variable. This
|
||||
is used the first time settings are needed, if the user hasn't
|
||||
configured settings manually.
|
||||
"""
|
||||
settings_module = os.environ.get(ENVIRONMENT_VARIABLE)
|
||||
if not settings_module:
|
||||
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)
|
||||
|
||||
def __repr__(self):
|
||||
# Hardcode the class name as otherwise it yields 'Settings'.
|
||||
if self._wrapped is empty:
|
||||
return '<LazySettings [Unevaluated]>'
|
||||
return '<LazySettings "%(settings_module)s">' % {
|
||||
'settings_module': self._wrapped.SETTINGS_MODULE,
|
||||
}
|
||||
|
||||
def __getattr__(self, name):
|
||||
"""Return the value of a setting and cache it in self.__dict__."""
|
||||
if self._wrapped is empty:
|
||||
self._setup(name)
|
||||
val = getattr(self._wrapped, name)
|
||||
|
||||
# Special case some settings which require further modification.
|
||||
# This is done here for performance reasons so the modified value is cached.
|
||||
if name in {'MEDIA_URL', 'STATIC_URL'} and val is not None:
|
||||
val = self._add_script_prefix(val)
|
||||
elif name == 'SECRET_KEY' and not val:
|
||||
raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")
|
||||
|
||||
self.__dict__[name] = val
|
||||
return val
|
||||
|
||||
def __setattr__(self, name, value):
|
||||
"""
|
||||
Set the value of setting. Clear all cached values if _wrapped changes
|
||||
(@override_settings does this) or clear single values when set.
|
||||
"""
|
||||
if name == '_wrapped':
|
||||
self.__dict__.clear()
|
||||
else:
|
||||
self.__dict__.pop(name, None)
|
||||
super().__setattr__(name, value)
|
||||
|
||||
def __delattr__(self, name):
|
||||
"""Delete a setting and clear it from cache if needed."""
|
||||
super().__delattr__(name)
|
||||
self.__dict__.pop(name, None)
|
||||
|
||||
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():
|
||||
if not name.isupper():
|
||||
raise TypeError('Setting %r must be uppercase.' % name)
|
||||
setattr(holder, name, value)
|
||||
self._wrapped = holder
|
||||
|
||||
@staticmethod
|
||||
def _add_script_prefix(value):
|
||||
"""
|
||||
Add SCRIPT_NAME prefix to relative paths.
|
||||
|
||||
Useful when the app is being served at a subpath and manually prefixing
|
||||
subpath to STATIC_URL and MEDIA_URL in settings is inconvenient.
|
||||
"""
|
||||
# Don't apply prefix to absolute paths and URLs.
|
||||
if value.startswith(('http://', 'https://', '/')):
|
||||
return value
|
||||
from django.urls import get_script_prefix
|
||||
return '%s%s' % (get_script_prefix(), value)
|
||||
|
||||
@property
|
||||
def configured(self):
|
||||
"""Return True if the settings have already been configured."""
|
||||
return self._wrapped is not empty
|
||||
|
||||
@property
|
||||
def USE_L10N(self):
|
||||
stack = traceback.extract_stack()
|
||||
# Show a warning if the setting is used outside of Django.
|
||||
# Stack index: -1 this line, -2 the caller.
|
||||
filename, _, _, _ = stack[-2]
|
||||
if not filename.startswith(os.path.dirname(django.__file__)):
|
||||
warnings.warn(
|
||||
USE_L10N_DEPRECATED_MSG,
|
||||
RemovedInDjango50Warning,
|
||||
stacklevel=2,
|
||||
)
|
||||
return self.__getattr__('USE_L10N')
|
||||
|
||||
# RemovedInDjango50Warning.
|
||||
@property
|
||||
def _USE_L10N_INTERNAL(self):
|
||||
# Special hook to avoid checking a traceback in internal use on hot
|
||||
# paths.
|
||||
return self.__getattr__('USE_L10N')
|
||||
|
||||
|
||||
class Settings:
|
||||
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_HOSTS',
|
||||
"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
|
||||
not isinstance(setting_value, (list, tuple))):
|
||||
raise ImproperlyConfigured("The %s setting must be a list or a tuple." % setting)
|
||||
setattr(self, setting, setting_value)
|
||||
self._explicit_settings.add(setting)
|
||||
|
||||
if self.USE_TZ is False and not self.is_overridden('USE_TZ'):
|
||||
warnings.warn(
|
||||
'The default value of USE_TZ will change from False to True '
|
||||
'in Django 5.0. Set USE_TZ to False in your project settings '
|
||||
'if you want to keep the current default behavior.',
|
||||
category=RemovedInDjango50Warning,
|
||||
)
|
||||
|
||||
if self.is_overridden('USE_DEPRECATED_PYTZ'):
|
||||
warnings.warn(USE_DEPRECATED_PYTZ_DEPRECATED_MSG, RemovedInDjango50Warning)
|
||||
|
||||
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 = Path('/usr/share/zoneinfo')
|
||||
zone_info_file = zoneinfo_root.joinpath(*self.TIME_ZONE.split('/'))
|
||||
if zoneinfo_root.exists() and not zone_info_file.exists():
|
||||
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()
|
||||
|
||||
if self.is_overridden('USE_L10N'):
|
||||
warnings.warn(USE_L10N_DEPRECATED_MSG, RemovedInDjango50Warning)
|
||||
|
||||
def is_overridden(self, setting):
|
||||
return setting in self._explicit_settings
|
||||
|
||||
def __repr__(self):
|
||||
return '<%(cls)s "%(settings_module)s">' % {
|
||||
'cls': self.__class__.__name__,
|
||||
'settings_module': self.SETTINGS_MODULE,
|
||||
}
|
||||
|
||||
|
||||
class UserSettingsHolder:
|
||||
"""Holder for user configured settings."""
|
||||
# SETTINGS_MODULE doesn't make much sense in the manually configured
|
||||
# (standalone) case.
|
||||
SETTINGS_MODULE = None
|
||||
|
||||
def __init__(self, default_settings):
|
||||
"""
|
||||
Requests for configuration variables not in this class are satisfied
|
||||
from the module specified in default_settings (if possible).
|
||||
"""
|
||||
self.__dict__['_deleted'] = set()
|
||||
self.default_settings = default_settings
|
||||
|
||||
def __getattr__(self, name):
|
||||
if not name.isupper() or name in self._deleted:
|
||||
raise AttributeError
|
||||
return getattr(self.default_settings, name)
|
||||
|
||||
def __setattr__(self, name, value):
|
||||
self._deleted.discard(name)
|
||||
if name == 'USE_L10N':
|
||||
warnings.warn(USE_L10N_DEPRECATED_MSG, RemovedInDjango50Warning)
|
||||
super().__setattr__(name, value)
|
||||
if name == 'USE_DEPRECATED_PYTZ':
|
||||
warnings.warn(USE_DEPRECATED_PYTZ_DEPRECATED_MSG, RemovedInDjango50Warning)
|
||||
|
||||
def __delattr__(self, name):
|
||||
self._deleted.add(name)
|
||||
if hasattr(self, name):
|
||||
super().__delattr__(name)
|
||||
|
||||
def __dir__(self):
|
||||
return sorted(
|
||||
s for s in [*self.__dict__, *dir(self.default_settings)]
|
||||
if s not in self._deleted
|
||||
)
|
||||
|
||||
def is_overridden(self, setting):
|
||||
deleted = (setting in self._deleted)
|
||||
set_locally = (setting in self.__dict__)
|
||||
set_on_default = getattr(self.default_settings, 'is_overridden', lambda s: False)(setting)
|
||||
return deleted or set_locally or set_on_default
|
||||
|
||||
def __repr__(self):
|
||||
return '<%(cls)s>' % {
|
||||
'cls': self.__class__.__name__,
|
||||
}
|
||||
|
||||
|
||||
settings = LazySettings()
|
||||
Reference in New Issue
Block a user