[mod] bing_news: use eval_xpath_getindex

remove unused function searx.utils.list_get

searx/engines/bing_news.py

@@ -15,7 +15,8 @@ from datetime import datetime
 from dateutil import parser
 from urllib.parse import urlencode, urlparse, parse_qsl
 from lxml import etree
-from searx.utils import list_get, match_language
+from lxml.etree import XPath
+from searx.utils import match_language, eval_xpath_getindex
 from searx.engines.bing import language_aliases
 from searx.engines.bing import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
 
@@ -94,12 +95,12 @@ def response(resp):
     # parse results
     for item in rss.xpath('./channel/item'):
         # url / title / content
-        url = url_cleanup(item.xpath('./link/text()')[0])
-        title = list_get(item.xpath('./title/text()'), 0, url)
-        content = list_get(item.xpath('./description/text()'), 0, '')
+        url = url_cleanup(eval_xpath_getindex(item, './link/text()', 0, default=None))
+        title = eval_xpath_getindex(item, './title/text()', 0, default=url)
+        content = eval_xpath_getindex(item, './description/text()', 0, default='')
 
         # publishedDate
-        publishedDate = list_get(item.xpath('./pubDate/text()'), 0)
+        publishedDate = eval_xpath_getindex(item, './pubDate/text()', 0, default=None)
         try:
             publishedDate = parser.parse(publishedDate, dayfirst=False)
         except TypeError:
@@ -108,7 +109,7 @@ def response(resp):
             publishedDate = datetime.now()
 
         # thumbnail
-        thumbnail = list_get(item.xpath('./News:Image/text()', namespaces=ns), 0)
+        thumbnail = eval_xpath_getindex(item, XPath('./News:Image/text()', namespaces=ns), 0, default=None)
         if thumbnail is not None:
             thumbnail = image_url_cleanup(thumbnail)
 

searx/utils.py

@@ -269,24 +269,6 @@ def dict_subset(d, properties):
     return result
 
 
-def list_get(a_list, index, default=None):
-    """Get element in list or default value
-    Examples:
-        >>> list_get(['A', 'B', 'C'], 0)
-        'A'
-        >>> list_get(['A', 'B', 'C'], 3)
-        None
-        >>> list_get(['A', 'B', 'C'], 3, 'default')
-        'default'
-        >>> list_get(['A', 'B', 'C'], -1)
-        'C'
-    """
-    if len(a_list) > index:
-        return a_list[index]
-    else:
-        return default
-
-
 def get_torrent_size(filesize, filesize_multiplier):
     """