Added title_chain example

examples/title_chain.py

@@ -0,0 +1,63 @@
+import spotipy
+import random
+import simplejson as json
+
+'''
+    generates a list of songs where the first word in each subsequent song
+    matches the last word of the previous song.
+'''
+
+sp = spotipy.Spotify()
+
+
+skiplist = set(['dm', 'remix'])
+max_offset = 500
+seen = set()
+
+def find_songs_that_start_with_word(word):
+    max_titles = 20
+    max_offset = 200
+    offset = 0
+
+    out = []
+    while  offset < max_offset and len(out) < max_titles:
+        results = sp.search(q=word, type = 'track', limit=50, offset = offset)
+        if len(results['tracks']['items']) == 0:
+            break
+
+        for item in results['tracks']['items']:
+            name = item['name'].lower()
+            if name in seen:
+                continue
+            seen.add(name)
+            if '(' in name:
+                continue
+            if '-' in name:
+                continue
+            if '/' in name:
+                continue
+            words = name.split()
+            if len(words) > 1 and words[0] == word and words[-1] not in skiplist:
+                #print "        ", name, len(out)
+                out.append(item)
+        offset += 50
+    #print "found", len(out), "matches"
+    return out
+
+def make_chain(word):
+    which = 1
+    while True:
+        songs = find_songs_that_start_with_word(word)
+        if len(songs) > 0:
+            song = random.choice(songs)
+            print which, song['name'] + " by " + song['artists'][0]['name']
+            which += 1
+            word = song['name'].lower().split()[-1]
+        else:
+            break
+
+if __name__ == '__main__':
+    import sys
+    title = ' '.join(sys.argv[1:])
+    make_chain(sys.argv[1].lower())
+