Fix Game.to_dict() (python-telegram-bot#767)

Eldinnie · tsnoam · commit 8d4b484f7bd0 · 2017-08-05T00:02:51.000+03:00
`Game.to_dict()` fails if the `optional` parameter `test_entities` has it's default value `None`
This fixes that.
diff --git a/telegram/games/game.py b/telegram/games/game.py
@@ -88,7 +88,8 @@ def to_dict(self):
         data = super(Game, self).to_dict()
 
         data['photo'] = [p.to_dict() for p in self.photo]
-        data['text_entities'] = [x.to_dict() for x in self.text_entities]
+        if self.text_entities:
+            data['text_entities'] = [x.to_dict() for x in self.text_entities]
 
         return data
 
