[mod] move all default settings into searx.settings_defaults

searx/utils.py

@@ -8,7 +8,6 @@ from os.path import splitext, join
 from random import choice
 from html.parser import HTMLParser
 from urllib.parse import urljoin, urlparse
-from collections.abc import Mapping
 
 from lxml import html
 from lxml.etree import ElementBase, XPath, XPathError, XPathSyntaxError, _ElementStringResult, _ElementUnicodeResult
@@ -46,7 +45,7 @@ def searx_useragent():
     """Return the searx User Agent"""
     return 'searx/{searx_version} {suffix}'.format(
            searx_version=VERSION_STRING,
-           suffix=settings['outgoing'].get('useragent_suffix', '')).strip()
+           suffix=settings['outgoing']['useragent_suffix'].strip())
 
 
 def gen_useragent(os=None):
@@ -501,58 +500,6 @@ def get_engine_from_settings(name):
     return {}
 
 
-NOT_EXISTS = object()
-"""Singleton used by :py:obj:`get_value` if a key does not exists."""
-
-
-def get_value(dictionary, *keys, default=NOT_EXISTS):
-    """Return the value from a *deep* mapping type (e.g. the ``settings`` object
-    from yaml).  If the path to the *key* does not exists a :py:obj:`NOT_EXISTS`
-    is returned (non ``KeyError`` exception is raised).
-
-    .. code: python
-
-       >>> from searx import settings
-       >>> from searx.utils import get_value, NOT_EXISTS
-       >>> get_value(settings, 'checker', 'additional_tests', 'rosebud', 'result_container')
-       ['not_empty', ['one_title_contains', 'citizen kane']]
-
-       >>> get_value(settings, 'search', 'xxx') is NOT_EXISTS
-       True
-       >>> get_value(settings, 'search', 'formats')
-       ['html', 'csv', 'json', 'rss']
-
-    The list returned from the ``search.format`` key is not a mapping type, you
-    can't traverse along non-mapping types.  If you try it, you will get a
-    :py:ref:`NOT_EXISTS`:
-
-    .. code: python
-
-       >>> get_value(settings, 'search', 'format', 'csv') is NOT_EXISTS
-       True
-       >>> get_value(settings, 'search', 'formats')[1]
-       'csv'
-
-    For convenience you can replace :py:ref:`NOT_EXISTS` by a default value of
-    your choice:
-
-    .. code: python
-
-       if 'csv' in get_value(settings, 'search', 'formats', default=[]):
-           print("csv format is denied")
-
-    """
-
-    obj = dictionary
-    for k in keys:
-        if not isinstance(obj, Mapping):
-            raise TypeError("expected mapping type, got %s" % type(obj))
-        obj = obj.get(k, default)
-        if obj is default:
-            return obj
-    return obj
-
-
 def get_xpath(xpath_spec):
     """Return cached compiled XPath