Checked the mentat.stats.idea module with pylint.

(Redmine issue: #3379,#3443)

lib/mentat/stats/idea.py

@@ -17,10 +17,8 @@ __author__  = "Jan Mach <jan.mach@cesnet.cz>"
 __credits__ = "Pavel Kácha <pavel.kacha@cesnet.cz>, Andrea Kropáčová <andrea.kropacova@cesnet.cz>"
 
 
-import collections
-
 from mentat.stats import escape_dict, unescape_dict
-from pynspect.jpath import jpath_values, jpath_set
+from pynspect.jpath import jpath_values
 
 
 KEY_UNKNOWN = '__unknown__'
@@ -258,7 +256,7 @@ def evaluate_messages(messages, stats = None):
         return stats
 
     # Prepare structure for storing IDEA message identifiers.
-    if not ST_LIST_IDS in stats:
+    if ST_LIST_IDS not in stats:
         stats[ST_LIST_IDS] = []
 
     for msg in messages: