From 114a9c075268729b1e9bdeb1c771c6f975caac50 2020-10-12 20:46:45
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2020-10-12 20:46:45
Subject: [PATCH] Merge pull request #12609 from scarlehoff/fix_12180

Fix to #12180 (display.Video failing with data=None)
---

diff --git a/IPython/core/display.py b/IPython/core/display.py
index 490435a..2920b84 100644
--- a/IPython/core/display.py
+++ b/IPython/core/display.py
@@ -1086,7 +1086,7 @@ class Video(DisplayObject):
         if url is None and isinstance(data, str) and data.startswith(('http:', 'https:')):
             url = data
             data = None
-        elif os.path.exists(data):
+        elif data is not None and os.path.exists(data):
             filename = data
             data = None