use isinstance instead of type() == ... as pylint suggests

icu_format.py

@@ -40,5 +40,6 @@
         """Return an item, eventually created with the factory"""
         # create a tuple out of args and kwargs
         key = tuple(
-            tuple(arg.items()) if type(arg) == dict else arg for arg in args
+            tuple(arg.items()) if isinstance(arg, dict) else arg
+            for arg in args
         ) + tuple(
@@ -44,5 +45,5 @@
         ) + tuple(
-            (key, tuple(value.items()) if type(value) == dict else value)
+            (key, tuple(value.items()) if isinstance(value, dict) else value)
             for key, value in kwargs.items()
         )
         if key not in self.__data: