From 3ebecb41e5b0046de83d0ec2ba011ea04cc31b73 Mon Sep 17 00:00:00 2001 From: Angus Hollands Date: Tue, 5 Jan 2021 09:49:35 +0000 Subject: [PATCH] Fix #9550 --- jupyterlab/upgrade_extension.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/jupyterlab/upgrade_extension.py b/jupyterlab/upgrade_extension.py index 3cf161a8472a..47090f1e9359 100644 --- a/jupyterlab/upgrade_extension.py +++ b/jupyterlab/upgrade_extension.py @@ -80,7 +80,7 @@ def update_extension(target, interactive=True): if name not in data: continue - for (key, value) in data[name].items(): + for (key, value) in list(data[name].items()): if key.startswith('@phosphor/'): has_phosphor = True data[name][key.replace('@phosphor/', '@lumino/')] = value