Handle missing ModuleNotFoundError in py3.5

evennia/contrib/rplanguage.py

@@ -333,7 +333,7 @@ class LanguageHandler(DefaultScript):
                         new_word = ''
                     else:
                         # use random word length
-                        wlen = choice(grammar.keys())
+                        wlen = choice(list(grammar.keys()))
 
                 if wlen:
                     structure = choice(grammar[wlen])

evennia/utils/utils.py

@@ -34,6 +34,12 @@ _EVENNIA_DIR = settings.EVENNIA_DIR
 _GAME_DIR = settings.GAME_DIR
 
 
+# ModuleNotFoundError only in py3.6, handle both
+try:
+    from builtins import ModuleNotFoundError
+except ImportError:
+    ModuleNotFoundError = ImportError
+
 ENCODINGS = settings.ENCODINGS
 _GA = object.__getattribute__
 _SA = object.__setattr__