From 6eee2de6a1ee09cc9b04f9a5e5fa97101449abf9 2018-10-30 19:48:43
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2018-10-30 19:48:43
Subject: [PATCH] Merge pull request #11464 from bergtholdt/fix_pyside2

fix for PySide2 cannot be activated since it is directly deactivated …
---

diff --git a/IPython/external/qt_loaders.py b/IPython/external/qt_loaders.py
index 2e822e2..ef6b898 100644
--- a/IPython/external/qt_loaders.py
+++ b/IPython/external/qt_loaders.py
@@ -68,7 +68,7 @@ def commit_api(api):
         ID.forbid('PySide')
         ID.forbid('PyQt4')
         ID.forbid('PyQt5')
-    if api == QT_API_PYSIDE:
+    elif api == QT_API_PYSIDE:
         ID.forbid('PySide2')
         ID.forbid('PyQt4')
         ID.forbid('PyQt5')