fix buzzer

boards/default/python_mixpy/examples/pu5oovP6zx4/02语音合成-1.py

@@ -0,0 +1,9 @@
+import aip
+
+import os
+
+
+f = open("audio.mp3", 'wb')
+client = aip.AipSpeech("Enter Your APP_ID", "Enter Your API_KEY", "Enter Your SECRET_KEY")
+f.write(client.synthesis("步行导航开始，直行后前方50米右转", options={}))
+os.startfile("audio.mp3")