Add lots of comments

core/metadata.py

@@ -13,10 +13,12 @@ def compare(file, metadata):
     try:
         if file.endswith('.mp3'):
             audiofile = EasyID3('Music/' + file)
+            # fetch track title metadata
             already_tagged = audiofile['title'][0] == metadata['name']
         elif file.endswith('.m4a'):
             tag = {'title': '\xa9nam'}
             audiofile = MP4('Music/' + file)
+            # fetch track title metadata
             already_tagged = audiofile[tags['title']] == metadata['name']
     except KeyError:
             already_tagged = False
@@ -35,7 +37,7 @@ def embed(music_file, meta_tags, output_ext):
         print('Cannot embed meta-tags into given output extension')
 
 def embed_mp3(music_file, meta_tags, output_ext):
-    #EasyID3 is fun to use ;)
+    # EasyID3 is fun to use ;)
     audiofile = EasyID3('Music/' + music_file + output_ext)
     audiofile['artist'] = meta_tags['artists'][0]['name']
     audiofile['albumartist'] = meta_tags['artists'][0]['name']

core/misc.py

@@ -58,6 +58,7 @@ def get_arguments():
 
     return parser.parse_args()
 
+# check if input song is spotify link
 def is_spotify(raw_song):
     if (len(raw_song) == 22 and raw_song.replace(" ", "%20") == raw_song) or (raw_song.find('spotify') > -1):
         return True
@@ -91,6 +92,7 @@ def generate_token():
     return token
 
 def generate_search_URL(song):
+    # urllib2.quote() encodes URL with special characters
     URL = "https://www.youtube.com/results?sp=EgIQAQ%253D%253D&q=" + quote(song)
     return URL
 
@@ -105,4 +107,4 @@ def grace_quit():
     print('')
     print('')
     print('Exitting..')
-    exit()
+    sys.exit()