L2SS-1030: fix linting

tangostationcontrol/docs/source/devices/configuration.rst

@@ -3,5 +3,4 @@
 Configuration
 --------------------
 
-The ``Configuration == DeviceProxy("STAT/Configuration/1")`` Configuration Device controls the loading, updating, exposing 
-and dumping of the whole Station Configuration
+The ``Configuration == DeviceProxy("STAT/Configuration/1")`` Configuration Device controls the loading, updating, exposing and dumping of the whole Station Configuration

tangostationcontrol/tangostationcontrol/common/configuration.py

@@ -33,8 +33,6 @@ def get_servers_with_filters(dbproxy, server="*", clss="*", device="*",
 
     # Queries can sometimes take more than de default 3 s, so it's
     # good to increase the timeout a bit.
-    # TODO: maybe instead use automatic retry and increase timeout
-    # each time?
     dbproxy.set_timeout_millis(timeout * 1000)
 
     if properties:
@@ -239,8 +237,9 @@ class SetterDict(CaselessDictionary, defaultdict):
     (using to_dict()) when you're done creating it.
     """
 
-    def __init__(self, value={}, factory=None):
+    def __init__(self, value=None, factory=None):
         factory = factory or SetterDict
+        value = {}
         self.__dict__["_factory"] = factory
         CaselessDictionary.__init__(self)
         defaultdict.__init__(self, factory)