Merge pull request #20098 from meeseeksmachine/auto-backport-of-pr-20096-on-v3.4.x

QuLogic · web-flow · commit fa57933ffe71 · 2021-04-28T15:23:50.000-04:00
Backport PR #20096 on branch v3.4.x (Ignore errors for sip with no setapi.)
diff --git a/lib/matplotlib/backends/qt_compat.py b/lib/matplotlib/backends/qt_compat.py
@@ -115,7 +115,7 @@ def _setup_pyqt4_internal(api):
             for _sip_api in _sip_apis:
                 try:
                     sip.setapi(_sip_api, api)
-                except ValueError:
+                except (AttributeError, ValueError):
                     pass
         from PyQt4 import QtCore, QtGui
         import sip  # Always succeeds *after* importing PyQt4.
