Deal with empty lists returned by YouTube API

bot.py

@@ -142,6 +142,8 @@ class Bot(discord.Client):
             video = self.youtube.get_video(video_id)
         except YouTubeError as e:
             return
+        if not video:
+            return
         published = entry.get('published')
         reminder = entry.get('reminder')
         if published and not reminder:

youtube.py

@@ -13,7 +13,7 @@ BASE_URL = 'https://www.youtube.com'
 class YouTube(object):
     def __init__(self, api_key, channel_id):
         self.client = googleapiclient.discovery.build('youtube', 'v3', developerKey=api_key)
-        self.channel = self.get_channel(channel_id)
+        self.channel = self.get_channel(channel_id) or {}
 
     def get_thumbnail_url(self, thumbnails):
         for key in ('high', 'medium', 'default'):
@@ -48,7 +48,10 @@ class YouTube(object):
 
     def get_channel(self, channel_id):
         r = self.client.channels().list(id=channel_id, maxResults=1, part='id,snippet').execute()
-        channel = r.get('items', [{}]).pop()
+        channels = r.get('items', [])
+        if not channels:
+            return None
+        channel = channels.pop()
         return dict(
             id=channel.get('id', ''),
             link='{0}/c/{1}'.format(BASE_URL, channel.get('snippet', {}).get('customUrl', '')),
@@ -58,8 +61,10 @@ class YouTube(object):
 
     def get_video(self, video_id):
         r = self.client.videos().list(id=video_id, maxResults=1, part='id,snippet,liveStreamingDetails').execute()
-        video = r.get('items', [{}]).pop()
-        return self.process_item(video)
+        videos = r.get('items', [])
+        if not videos:
+            return None
+        return self.process_item(videos.pop())
 
     def get_playlists(self):
         token = ''