From 708961cc59e4bfb36ce3a7e88060f62f1b2358f1 2019-03-14 16:58:13
From: Matan Gover <matangover@gmail.com>
Date: 2019-03-14 16:58:13
Subject: [PATCH] Better error when rate is not specified.

---

diff --git a/IPython/lib/display.py b/IPython/lib/display.py
index 15fe566..a163b6a 100644
--- a/IPython/lib/display.py
+++ b/IPython/lib/display.py
@@ -97,6 +97,8 @@ class Audio(DisplayObject):
         super(Audio, self).__init__(data=data, url=url, filename=filename)
 
         if self.data is not None and not isinstance(self.data, bytes):
+            if rate is None:
+                raise ValueError("rate must be specified when data is a numpy array or list of audio samples.")
             self.data = Audio._make_wav(data, rate)
 
     def reload(self):