Update app.py

app.py

@@ -37,7 +37,7 @@ def transcribe(file_name):
     # Reads the response
     for result in response.results:
         print("Confidence: {}".format(result.alternatives[0].confidence))
-        confidence.append(result.alternatives[0].confidence)
+        confidence.append(str(result.alternatives[0].confidence))
         print("Transcript: {}".format(result.alternatives[0].transcript))
         transcript.append(result.alternatives[0].transcript)