fix for PySide2 cannot be activated since it is directly deactivated again in the else part

bergtholdt · bergtholdt · commit d6fff8374147 · 2018-10-29T16:16:13.000+01:00
diff --git 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')
