fix lac demo

python/examples/lac/lac_client.py

@@ -36,4 +36,4 @@ for line in sys.stdin:
     end = fetch_map['crf_decode.lod'][1]
     segs = reader.parse_result(line, fetch_map["crf_decode"][begin:end])
 
-    print({"word_seg": "|".join(segs)})
+    print("word_seg: " + "|".join(segs))

python/paddle_serving_app/reader/lac_reader.py

@@ -111,6 +111,8 @@ class LACReader(object):
         return word_ids
 
     def parse_result(self, words, crf_decode):
+        if py_version == 2:
+            words = unicode(words, "utf-8")
         tags = [self.id2label_dict[str(x[0])] for x in crf_decode]
 
         sent_out = []